A COMPARISON OF OCEANIC PARAMETERS DURING UPWELLING OFF THE CENTRAL COAST OF CALIFORNIA by Arthur Bishop Shepard United States Naval Postqraduate Scf T TCP* C~~i T A COMPARISON OF OCEANIC PARAMETERS DURING UPWELLING OFF THE CENTRAL COAST OF CALIFORNIA by Arthur Bishop Shepard September 1970 Tlvu> document Wom been cjppKovzd {^on. pabtlc *iz- 1cJL&Ubu£Lon am untimiXzd, 14 UAVAL POSTGRADUATE SCHOOL MONTEREY, CALIF. 93940 A Comparison of Oceanic Parameters During Upwelling off the Central Coast of California by Arthur Bishop Shepard Lieutenant, United States Coast Guard B.S., United States Coast Guard Academy, 1963 Submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN OCEANOGRAPHY from the NAVAL POSTGRADUATE SCHOOL September 1970 LIBRARY NAVAL POSTGRADUATE SCHOOD MONTEREY, CALIF. 93940 ABSTRACT An examination of the region between Monterey Bay and San Francisco Bay, California was conducted from 29 April to 5 May 1970 to study the effects of upwelling on the Central California, coastal region. Six parameters: temperature, phosphate, beam transmission for light, chloro- phyll a, Coulter particle size distributions , and oxygen were observed at eighty-five stations from the surface to 100 m in the cruise area. The data gathered are presented in the form of horizontal contours and profiles which indicate: (1) Almost the entire surface layer was saturated with respect to oxygen. (2) there were four areas, at the northern and southern ends of Monterey Bay, off Point Montara, and west of the entrance to San Francisco Bay, which exhibited high values of chlorophyll a, oxygen, and particle count, for correspondingly low phosphate values and low beam transmission. (3) These productive areas are inshore, generally within 5-10 miles of the coast. (4) A peak in the size distribution of particles was evident in the productive surface layers, within the observable range of particle diameters (1.59 to 32.0 (j) . (5) Plots of oxygen versus Ug-at/1 P04 phosphate showed that similar slopes of about -3.1 r-j\ — were ob- mi/1 0„ served for inshore and offshore regions. The inshore regions exhibited higher phosphate values for a given value of oxygen which is probably a result of upwelling. (6) There was a fair correlation between beam trans- mittance and particle count. High values of beam transmittance were gen- erally associated with low total Coulter count, e.g., 90fo/m and 6000 counts per 2 ml. Conversely, low values of beam transmittance. were associated with high particle counts, for example 5%/m and 85,000 counts per 2 ml. tabu: of contents i. introduction 9 a. environmental factors 9 b. background 13 1. Phosphate 13 2. Dissolved Oxygen 14 3. Chlorophyll a 14 4. Beam Transmittance 15 5. Particulates 18 6. Temperature 20 7. Upwelling C. OBJECTIVE 21 II. OBSERVATIONAL PROCEDURES 23 A. STATION LOCATIONS 23 B. DATA COLLECTION 23 C. INSTRUMENTATION 26 1. Beam Transmissometer 26 2. Sound Velocity-Temperature-Depth Probe 26 3. Fluorometer 26 4. Particle Counter 26 III. DATA ANALYSIS 28 A. INTRODUCTION 28 B. METHODS OF ANALYSIS 28 1. Horizontal Contours 28 2. Vertical Contours 36 3. Graphical Comparisons 39 3 IV. CONCLUSIONS 49 V. SUGGESTIONS FOR FUTURE RESEARCH 51 APPENDIX - Bathythermograph Traces 203 BIBLIOGRAPHY 208 INITIAL DISTRIBUTION LIST . 210 FORM DD 1473 217 LIST OF TABLES Table Page I Station Data: Location, Time, Depth, Weatner, 125 Sound Velocity, Temperature, Transmittance , Oxygen , Chlorophyll , and Phosphate II Particle Size Distributions 169 r LIST OF FIGURES Figure Page 1 Arrangement of SV/T/D Probe and Beam Transmissometer . 17 2 Cruise Track Showing Station Locations 24 3 Locations of CALCOFI and KPS Stations in Monterey Bay 33 4 Particle Size Distribution Observed at Station 1-1 at 100 m 40 5 Particle Size Distributions observed at Station A-6 in Monterey Bay, from 0-100 m 42 6 Chlorophyll a as a Function of Oxygen 43 7 Total Particle Count as a Function of Beam Transmittance 45 8 Beam Transmittance as a Function of Chlorophyll a 46 9 Oxygen as a Function of Phosphate 48 10-39 Horizontal Contours for 0, 10, 20, 40, and 75 m Depths for Chlorophyll a, Oxygen, Total Particle Count, Phosphate, Temperature, and Beam Transmittance 53-82 40-81 Vertical Profiles of Chlorophyll a, Oxygen, Total Particle Count, Phosphate, Temperature, and Beam Transmittance 83-124 ACKNOWLEDGEMENTS At this point the author desires to express his deep gratitude to those who have made this project possible. First and foremost, I want to thank Stevens P. Tucker, who helped initiate this study while he was a member of the teaching faculty (1968-1970) and who aided and encouraged me throughout, for his enthusiasm and willingness to provide assistance at any time. Secondly, I wish to thank Professor Eugene C. Haderlie, my faculty thesis advisor, for his help and understanding. My thanks are also extended to the Pacific Support Group of the U. S. Naval Oceanographic Office and to the captain and members of the crew of the USNS BARTLETT (T-AGOR-13). There were many others who helped, but without the aid of the members of my section, LCDR Sexton, LCDR Lynch, LCDR Jensen, LCDR Wunderly, LT Drennan, LT McKay, and LT Chandler, who voluntarily assisted in the data gathering portion of the study, it would have been impossible to complete the eighty-five stations in six days. Finally to my wife, Sharon, who cheerfully assisted, spending long, tedious hours copying data and typing, and who accepted the neglect of the author during the preparation of this report. I. INTRODUCTION A. ENVIRONMENTAL FACTORS Our knowledge of the ocean depends on sampling and collecting data over a period of time and is based on composite pictures of regions of interest. The upwelling areas of the world are of particular interest because of the high productivity associated with them, and because existing or proposed waste disposal sites are located in some of these regions. An estimated one-half of the world's supply of fish comes from upwelling regions, even though the total surface area involved is but one-half of one percent of the total surface area of the oceans. This can be explained in terms of the food chain, that is, the number of steps from photosynthetic phytoplankton, through grazers, to the ultimate con- sumer. Due to both the colonial habits and the large size of phytoplankton in upwelling areas, food chains in such regions tend to be shorter than where there is no upwelling [19]. Production of a standing crop of phytoplankton in upwelling areas is limited to the surface layers, where there is a favorable total concen- tration of nutrients, which for phosphate, for example, can be as low as 1.0 pg-at/1 and still permit vigorous growth. Since photosynthesis is limited to the euphotic zone, that region for which the intensity of light is greater than approximately one percent of that incident on the surface, productivity is light-limited as well as nutrient- limited . The availability of light in the euphotic zone depends on three principal factors: productivity, land runoff (which contributes particulates and disolved organic matter), and, in regions adjacent to densely populated metropolitan centers, waste discharge. Of the three factors, both runoff and productivity are natural features of a region normally not subject to control. Waste discharge however can be controlled. The problem of waste disposal by dilution in the ocean, a practice commonly followed in coastal regions, is becoming more and more acute. With increasing population growth, present disposal methods are proving to be inadequate to handle the increasing quantities of waste which are being generated. Generally the ocean has been considered a great sump into which wastes can be pumped with no danger. Experience has shown that dilution of wastes pumped into the sea is in fact much less than expected. Attempts have been made to design out- falls and diffuser systems to minimize the adverse effects of such disposal It nevertheless remains to be seen what will be the short and long term effects of the enormous volume of wastes (1.4 billion gallons per day) expected by the year 2000 on the coastal waters of central California. As Smith [21] points out: "If waste is to be pumped into the sea off coasts where upwelling is prevalent, it is apparent that adequate scientific knowledge of the upwelling process is needed". Of the world's fish supply not associated with upwelling areas, i.e. approximately one half of the total supply, almost the entire quantity is to be found in the shallow regions of the continental shelves where waste disposal is a more apparent problem. Nutrients in these regions are sup- plied to the euphotic zone by runoff from the land and by other hydro- graphic features like turbulence and convection. Turbulence tends to homogenize the water mass and thus distribute dissolved nutrients to considerable depths. For maximum phytoplankton production turbulence must be followed by a stratification or stabilization of the water mass to allow phytoplankton to remain in the euphotic zone [22, p. 941]. Thus turbulence as well as 10 upwelling raise the level of nutrients at the surface; indeed, one-half of the phosphate enrichment of surface waters off Peru, for example , appears to be due to turbulence and the other half to upwelling [21]. Thorade in 1909 postulated that the anomalously cold water along the California coast was due to upwelling. He showed that vertical advection of deep water was needed to replace surface water transported offshore by the northerly winds paralleling the coast, which, because of the Coriolis effect, causes a net transport in a direction 90 to the right of the wind. This was the first application of Ekman's Theory [21]. Skogsberg [20] was the first to treat the oceanographic climate of the Monterey Bay region as being divided into three distinct seasonal phases, namely the cold and warm water phases and the low thermal gradient phase. These three features were later referred to and described by Bolin [A] as the Upwelling Period, the Oceanic Period, and the Davidson Current Period . The Upwelling Period is initiated by the change in the surface winds of January and February to a generally northerly flow paralleling the coast. Water is transported away from the coast and replaced by deeper water advected vertically upward from depths probably not exceeding 200 meters according to Sverdrup [22]. This period is characterized by: the lowest surface temperatures in the annual cycle; salinity values which rise to the high point of the year and are followed by a subsequent decline and a strong vertical temperature gradient of more than 1 C per 16 m. The steady northerly winds of spring become intermittant in late summer and provide interruptions in the coastal upwelling, which allow the cold dense water to sink, causing convergences. Warm inshore surface water flowing offshore and an inflow of oceanic surface water to replace 11 the sinking, denser water establish a sharp thermocline in the first few meters. The Oceanic Period is characterized by surface temperatures as much as 2-3 C higher than the peak temperatures during the upwelling season, by a continuation of the strong vertical gradient established during the period of upwelling, and also by calm conditions which con- stitute a transformation between the northerly winds of the Upwelling Period and the southerly winds of the Davidson Current period. The influx of oceanic surface water, the rise in the surface water tempera- tures, and the decrease in nutrient levels due to a lack of upwelling, lead to a decrease in the productivity of the local phytoplankton . With the influx of oceanic surface water a number of offshore phytoplanktonic species are brought into the Monterey Bay region, an environment more fertile than the open ocean but less fertile than during the height of upwelling. The inoculum finds conditions for growth more favorable than normal and multiplies, increasing the diversity of forms in the coastal water. Therefore, a progressive reduction in the productivity for the area is checked. Thus, although initial local populations may require highly fertile waters, subsequent oceanic inputs are able to subsist at lower nutrient levels, and an average supply of plants is maintained for the grazers in the area. In their study of the marine climate of central coastal California Bolin and Abbott noted that if upwelling is inter- mittant, plankton volumes are high, and if upwelling is steady, plankton volumes are lower [3]. After the calm of the Oceanic Period the winds become southerly in November. The Coriolis effect causes a shoreward transport of water and an accumulation of low density water along the coast. This has two pri- mary effects on the California coastal environment. A current is formed as a result of the piling up of light waters , which parallels and reinforces 12 the wind driven current; sinking of the surface waters occurs, and relatively isothermal conditions are established to a considerable depth. The Davidson Current period lasts until February and provides the only sharp climatic change in the cycle. Its onset is characterized by an abrupt decline in surface temperature. B. BACKGROUND In general the distribution of oceanic parameters in the study region is complicated by vertical advection, entrainment, biologic activity, and, near the entrance to the San Francisco tidal prism, brackish discharge during the upwelling period. Of particular interest is the altering of the individual physical and chemical properties, especially in the first 100 meters, during this period. 1 . Phosphate Phosphate increases with depth to a maximum that corresponds to the oxygen minimum. The lowest values generally are found at the sur- face, where the usual concentration at mid- lat itudes is of the order of 0.2 ^-at/1 [21], In the California coastal region phosphate concen- tration changes in an abrupt manner in the late winter and spring. The suddenness of the change can be attributed to upwelling of nutrient enriched water into the surface layers , which replenishes the water depleted in phosphates throughout the fall and early winter. The abundance of nutrients in the euphotic zone is a stimulus for growth of phytoplankton , and patchy areas of productivity become evident, further complicating the analysis of observations. Measurements of phosphorous in the form of phosphate conducted off the central California coast by the California Cooperative Fisheries Investigations (CALCOFI) in July 1950 indicate values of 2 - 2 . 5 |jg-at/l to be present at 100 m [5]. 13 2 . Dissolved Oxygen Oxygen is generally at or above saturation at the surface, due to aeration and photosynthesis, but decreases in concentration with depth to a minimum at some intermediate depth. The saturation value of oxygen depends upon both salinity and temperature. The latter is the dominant factor off the central California coast. Since oxygen is replaced in the surface layers and is consumed throughout a water column by respiration and decay, the subsurface waters tend to be low in dissolved oxygen. When upwelling occurs, such oxygen- low waters are brought to the surface and are typically undersaturated . Park, Pattullo, and Wyatt observed values of dissolved oxygen concentration to be 60 - 70$> of saturation during up- welling off the Oregon coast [15]. During upwelling, a fair correlation may be observed, though generally not at the surface, between oxygen and temperature. Pytkowicz [16] showed correlations between oxygen and inorganic phosphate for Oregon coastal waters and suggested that a subsurface oxygen maximum is formed as a result of the summer upwelling, when the rate of escape of oxygen exceeds its rate of production by photosynthesis. A subsurface oxygen maximum was observed by Stefansson and Richards in the same coastal region and was attributed, not to photosynthesis, but to a sinking along isentropic surfaces of water which had been enriched previously by photosynthesis nearer shore. They also noted a good statistical correlation between dissolved oxygen and density, except in the upper layers . 3 . Chlorophyll a Chlorophyll a is perhaps the most important of the plant pigments, and observations of the concentrations of chlorophyll a can give indi- cations of the production of phytoplankton . In the first ten meters 14 chlorophyll a undergoes greater diurnal changes than any other plant pigment, which indicates that it is more quickly synthesized and decom- posed. Concentrations which were up to five times greater at midnight than at noon were observed, for example, in East Sound, Washington, a stratified inlet with little exchange [25]. Ramsey [17] on the basis of tests of the remote sensing of ocean color indicated that definite changes in the spectrum of the upward flux from the sea occur with varying chlorophyll content . An aircraft has been used as a platform for the TRW spectrometer in the analysis of the backscattered light from the sun and sky and the highest percentage of the backscattered light was observed in the green portion of the spectrum [6]. This spectral peak was compared to concentrations of chlorophyll measured with a continuous reading Turner fluormeter. Yentsch and Scagel [25] agree with Sverdrup, Johnson, and Flemming [23, 25]: For primary productivity to take place a certain degree of stability must be reached in a water column, since pigment synthesis or decomposition depends on the duration of exposure to, as well as on, the intensity of light. 4 . Beam Transmittance The primary task of optical oceanography is to find out which ingredients in sea water are optically active and to study scattering together with absorption in order to understand the propagation of light in an oceanic medium [9, p. 1]. Scattering in the sea is primarily what may be described as Mie scattering, that is scattering due to particles and living organisms having sizes of the same order of magnitude as the The TRW spectrometer is an electro-optical sensor of the off-plane Ebert type with a spectral range of 400 to 700 nm and a spectral resolution of 5 to 7.5 nrn . 15 wave length of light [7]. For large suspended particles the intensity of light scattering according to the Mie theory is predominantly in the forward direction. Scattering of light by highly filtered sea water, however, may be considered as being similar to scattering by pure water, a problem of molecular or Rayleigh scattering, since there is no notice- able effect from the various solutes [7, p. 22, 53]. Rayleigh scattering is a maximum in the forward and backward direction and a minimum in the plane at right angles to the incident light. Absorption, on the other hand, can be attributed to suspended particulate matter as well as to solutes . A beam transmissometer is used to measure the total beam attenu- ation coefficient, c, which may be represented as the sum, c = a + b, where a is defined as the total absorption coefficient, and b is defined as the total scattering coefficient. In a beam transmissometer a light source which emits a collimated beam of light is housed at one end of the instrument, and a detector is housed at the other end of a fixed path- length to receive the parallel rays. The beam transmissometer may be used in situ with a depth sensing device to record transmittance as a function of depth (Figure 1). Beam transmiss ometers may be used with scattering meters to study two con- stituents of sea water, namely particles and "yellow substance". The oceanographic interest in the distribution of these components is The total beam attenuation coefficient c (= a 4- b) is given by c = - (l/l)dl/dx, where I is the radiant flux incident on a thin layer of thickness dx normal to the beam and dl is the radiant flux lost to the beam due to the effects of scattering and absorption. If this equation is integrated, I(x) =I(0)e"cx, where I(x) is the radiant flux of the beam at a distance x in the direction of propagation from a point where the flux has the value 1(0). Normally x is taken to be 1 m, so that 1(1) = l(0)e" The transmittance per meter, T, is then defined as the ratio T = l(l)/l(0) = e Sometimes the term "beam attenuation", A, is used. It is related to the transmittance: T + A = 1. -c 16 NOT TO SCALE SV/T/D PROBE BEAM TRANSMISSOMETER Figure 1 17 dictated by the desire to find suitable parameters to characterize water masses [9, p. 155]. "Yellow substance" is a collective name for dis- solved organic substances probably formed from carbohydrates and amino acids. The yellowish end product is fairly stable in sea water and is found in coastal areas and regions of upwelling. An inverse proportion- ality seems to exist between the decomposition of chloroplastic pigments and the production of the yellow absorbing substances. This relationship indicates that yellow substance may be a derivative of protein carriers coupled to the chlorophyll chromophores [24], 5 . Particulates The optical properties of a water mass to the extent they differ from those for pure water are largely due to dissolved matter and sus- pended particulates [9, p. 1]. A determination of particulate concen- trations may be accomplished by weighing. Size distribution and total counts may be determined either with a microscope or electronically, for example with a Coulter counter, which measures the diameter or the volume of particles suspended in an electrolyte. The Coulter counter provides a rapid means of analyzing a particulate sample, and satisfactory results can be obtained as long as the particles to be counted are not less than about 1.5$ of the aperture size [8]. Measurements by Yeske and Waer [26] indicated that approximately 96$ of the suspended particles in Monterey Bay were less than 8.5 [j. Labyak [11] found that approximately 90$ of the particles affecting beam transmittance in the coastal region between Monterey and San Francisco Bays were less than 12 [i in diameter. Baker [1], who examined the same region as Labyak, concluded that 74$ of all particles examined had a diameter less than 6.2 (j. However, the total counts observed in these studies were extremely low when compared with the results obtained for 18 the May 1970 cruise. Therefore, for purposes of comparison, examples of counts for turbid, intermediate, and clear waters were sought. The following are examples of particle counts per milliliter of sample for 1 3 a threshold size of 1.0 p.: Bahama Banks — 50-70 x 10 ; Sargasso Sea 3 surface water — 12-20 x 10 ; Sargasso Sea deep water (below the mixed layer)— 3-8 x 103 [8]. Suspended particles, either organic or inorganic, affect light attenuation; for example, heavy concentrations of particulate matter diminish the vertical extent of the euphotic zone. During upwelling high particle counts and low transmissivity are to be expected. Joseph [10] has pointed out the need for more measurements of beam attenuation in upwelling waters. A good relationship between suspended matter and chlorinity has been noted by Manheim [12], who found a gradual and linear decrease in the concentration of suspended matter with increasing chlorinity. This suggests that initial concentrations are being diluted with sea water as they progress seaward. A general trend has been observed toward decreasing numbers of particulates with increasing depth and distance from the coast, which can be altered by tidal and wind driven currents, local winds, land runoff, mixing, and upwelling. Changing particulate concentrations can leave areas of patchiness in the sea and can make observations based on single observations at fixed points misleading. Turbulence can alter near-bottom particulate distributions When referring to particulate counts with the Coulter counter, the word "threshold" is used to refer to a size range into which particulates can be separated electronically after the instrument is calibrated with particles of a known size. Hereafter, "threshold setting" will refer to that channel number or equivalent spherical diameter from which reliable counts (free of background noise) can be obtained; e.g. channel 13 which corresponds to an equivalent spherical diameter of 1.59 \A. 19 Thus, clouds of particles are frequently encountered at levels 10 to 50 m above the bottom [9]. 6. Temperature In order to appreciate more fully the impact of upwelling on the climate of the central California coastal region it is necessary to note that the yearly average offshore surface temperature of the Pacific Ocean for the latitude of Monterey Bay is 21 C, while the average annual surface temperature for the Bay is approximately 13 C. The annual range of sur- face water temperatures is less for regions where summer upwelling occurs. Thus, along the western coast of the United States the annual range of surface water temperatures is less than 3 C, while west of the California current the range exceeds 7 C [21]. The suppression of surface water temperatures due to upwelling contributes to differential heating and increases the atmospheric pres- sure gradient and associated winds. It can be seen, therefore, that through depression of sea surface temperatures upwelling strengthens the diurnal sea breeze and brings cool, moist air inland [21], Examination of vertical temperature sections from offshore to the coast shows marked horizontal and vertical gradients and sharply ascending isotherms. According to Stefansson and Richards [22] in a study of the Washington and Oregon coastal region during upwelling, the temperature structure is formed as cold, originally deep, water mixes upward in a stepwise fashion, the ascending water mixing with the over- lying warmer water. There is an indication that upwelling follows certain routes in Monterey Bay, along the axis of the Monterey Submarine Canyon, and that strong upwelling along the upper reaches of the canyon lowers the surface temperatures over and adjacent to this feature during the spring and summer [3 ] . 20 Upwelling can be expected in areas where there is a divergence of surface flow. On the western coasts of continents, for example, during certain periods when the winds parallel the coast and blow equatorward, a characteristic single-sided divergence occurs, which transports light surface waters offshore. To maintain continuity, dense, cold, oxygen- poor, and nutrient-enriched waters are advected vertically from inter- mediate depths. The anomalies produced by the upwelled waters impinging on the surface layers are evident as strong horizontal gradients of physical and chemical properties, which normally only have marked vertical gradients. The California coastal region represents such a situation and is characterized by a narrow strip of cold water which exerts a strong effect on the climate of the region. Surface anomalies may be used as indicators of upwelling, but the mere presence of anomalies does not necessarily indicate the existence of upwelling. Similar effects have been caused temporarily by wind mixing or baroclinic adjustment of the density field associated with an increase in the geostrophic transport of a current. Persistence of the indicators, however, is probably possible only with upwelling [21]. The vertical advection of denser waters to the surface leads to a change in the distribution of mass, and, as the upwelled water accumu- lates along the coast, a current is established that flows in the direction of the wind along the coast to the south [23, p. 501]. C . OBJECTIVE The objective of the present study is to examine the effects of upwelling on a central California coastal region, to compare the observed data to that obtained earlier, and finally to compare the various indivi- dual parameters observed. Achievement of these objectives was thought to 21 be best accomplished by a close examination of the region which includes the area between Monterey and San Francisco Bays. The region, still highly productive inshore, once supported a large fishing fleet, which moved to other areas when the sardines disappeared. The constancy of climate in the area encourages population growth and tourism. The increased numbers of people represent an ever increasing demand on the coastal communities for waste disposal. The coastal com- munities of central California can be divided into two types: a highly industrial megalopolis to the north and a suburban and rural area to the south . The area is affected by the flow of the largest river system in California, which empites into San Francisco Bay and is subsequently discharged into the sea. The region has been previously examined by Labyak [11] and Baker [1], whose data, especially Labyak's for May 1969, was hoped to be useful in establishing comparisons. Comparisons were made between the physical and chemical variables observed during the cruise, which lasted from 29 April to 5 May 1970. The observed ranges for these parameters were large due in part to several significant plankton blooms which were observed. 22 II. OBSERVATIONAL PROCEDURES A. STATION LOCATIONS Station data were collected during the period 29 April - 5 May 1970 aboard the USNS BARTLETT (T-AGOR-13). The area under investigation, the coastal region between Monterey Bay and San Francisco Bay, is presented in Figure 2 along with the locations of the eighty-five stations occupied. The position, the time, and the weather conditions at each station are presented in Table I. The stations in this coastal region were chosen to cover approximately the same areas and stations covered by Baker [1] and Labyak [11] in order to increase the data available for this important region. Station lines were occupied in alphabetical order starting with station A-l in Monterey Bay and ending with station M-7 to the south of the entrance to San Francisco Bay. Stations within a given station line were occupied in numerical order. Station positions were determined by radar, loran, and visual means to within an accuracy of from 0.5 to 1.0 nmi. B. DATA COLLECTION Three hydrographic casts were made at each station. On the first cast, the beam transmissometer and the sound velocity/temperature/depth probe (SV/T/D) were arranged to allow the beam transmissometer to pass through essentially undisturbed water (Figure 1). Variations of tempera- ture, transmissivity , and sound velocity as functions of depth were observed on both the down and up portions of each cast. The readings recorded here, however, are from the down cast only, because both the probe and transmissometer were allowed to remain for some time at a given depth and allowed to equillibrate . 23 (13 o o C o ■U CO W) C •r-l o CO o H in 4-J rt > u 0) CO x> O C o •H 4J X) ■H !j 4-1 W •H Q cu N •l-l CO o •I-l 4J u P4 pi O H PARTICLE DIAMETER in P 40 is, the larger the slope the greater the influence of small particles. Natural truncation occurs for large particle diameters due to a settling which takes place despite stirring, thus causing a change in slope and producing a distinct bend at a particular equivalent spherical diameter. To examine this natural truncation plots similar to Figure 4 were constructed for depths from 0 - 100 m. Station A-6 was chosen as typically representative of the Monterey Bay region. Examination of the plot (Figure 5) reveals an abrupt change in slope and a dip at a particular size. This seems to indicate the presence of larger amounts of particles of this size than would normally be observed. The peak occurs at approximately 15 |j, which is within the nannoplankton range. It is assumed, therefore, that the peak which is evident in the surface layers only is due to an abrupt increase in phytoplankters . Chlorophyll a was plotted against oxygen in Figure 6. An initial plot of selected stations showed that there was no correlation in the scatter of points from the plotted values at each station: values of high chlorophyll a were observed at both low and high values of dissolved oxygen. Some of the high values of chlorophyll a corresponding to low oxygen may be explained by the presence of detritic pigments and/or by inactivation of chlorophyll a as phaeophytin [13]. One hundred percent saturation of dissolved oxygen is assumed to occur at 6.0 ml/1 - a value which is approximately correct for the region considered. All values in excess of this were plotted, but no apparent relationship was revealed between 09 and chlorophyll a. More than 70$ of the values greater than 3 6.0 ml/1 were associated with chlorophyll a concentrations of 2.0 mg/m . Of the low values of chlorophyll a above saturation, 80/o were associated with offshore stations removed from the effects of upwelling. It is 41 I I I I I II E CM — u CD , . tx , 4-1 c 0 1 o o CD i— 1 o •r-l 1 ' ' 4J ^1 m PL, 0-2 1.0 o o o o o o o o o o o o o Particle Diameter in \j. 42 cd >-i cd •U d o c •r-t ^O I <3 c o •H •U ca Ctf X) CD S-i 0) w X> O CO C O 3 en o •h o O ^ CD i •H O E cd o O 14-1 CO ctJ m Pi 8 4"f + •f + ♦ ♦ + •*■•*■ 1- 00 ♦ * "V * t j. •*■ t +• * ♦ ♦ «. *; + J v J*- ♦■ *♦*%.♦ Cv *•*♦ + -T M 00 (M Chlorophyll (mg/m ) 43 c CO bO >^ 5 <4-l O d o ■r-t O C Fn CO 03 C0| >> XI Oh +r O u +. . to O >> X! u +• + X +•»- v£> ■♦■ W ■»• Pi Fn assumed that these values are due to wind mixing which homogenized the water mass . It has been shown above that in general the regions of high total particulate count were areas of low light transmissivity . Therefore, a scatter diagram was constructed to see if obvious correlation did exist between the two parameters. Values of beam transmittance were plotted against total counts per 2 ml sample for all depths for each of the stations in Monterey Bay as well as for selected stations throughout the entire cruise region, and a fair linear correlation was exhibited between the two. The plot (Figure 7) shows that in general low particle counts accompany high values of beam transmission and conversely, high particle counts are associated with low beam transmission. A few extremely high counts were noted in association with high transmissivity, but it is believed that these values possibly may be due to counting error. If these values are included in the range of counts for a given value of beam transmission then a spread of approximately 35,000 counts occurs at an arbitrary value of transmissivity. A similar range of values exists for low beam transmission. However, it is to be expected that the higher the count, the lower the beam transmission, especially where high counts are concerned. Beam transmittance was also plotted against chlorophyll a for stations A-l through E-5. This covered the Monterey Bay area and the southern portion of the study region, and it was hoped that the more than 200 points would show relationships between the two parameters. Figure 8 depicts a rather limited relationship between the two and shows that high light transmissivity is not associated with high concentrations of chlorophyll a. Indeed the chlorophyll a concentration appears to deter- mine the upper limit of beam transmission. The fact that there is no 44 *T 1- -T 1 V * * * -*- + 5 V +*+ * ♦■ ♦ * * ♦ * * T *** * ♦ * ♦ + * ■» * ♦ ♦ 35 ♦ 4- ♦ ♦ ^ * 4- ♦ ♦ ****** * ** * * ♦ *■ +• **+ * *■ ****** ** * * * * * * * t * * ** % + ♦ ♦ ♦ •♦• o o o o o CO o o o m o CO o o o o o . in o c CO u •u •r-l E w c co U H E « CJ PQ • o E c CN o k 4J V C) a fa »— Z cO ID w O CO u 4J o -I o -J o o < u o CO Pli CO ■U o H W Pi O M fa Beam transmission (jb/m) 45 4 - 4- ■*■ ■»* r •t- *• + ■»■♦ 4 + + 4» + ♦ 4. *■ 4- 4- + * 4- + * + JL co -o ro > £ -r*j a ^ c ^ u o o iH u e CO ■u IW u o •-4 £ c 03 o C •r-l cO .U W o o w c -1 vj- co <4-) 0) cO Pd 03 CO CJ o e o 4J ro 4J •r-l E CO C CO l-i H E CO O 0) CD o to r| >, Ph £ m o cl o •r4 ■U o *■ c 3 m cfl V) CO C CO bO r*i >> C-N OA 48 IV. CONCLUSIONS Observations off the central coast of California have been conducted on a large scale by California Cooperative Oceanic Fisheries Investi- gations (CALCOFI) and by Hopkins Marine Station. This present study represents a fine scale survey of the central California region during an upwelling season. The analysis of data was approached in a quasi- synoptic manner, due to the spatial and temporal changes that took place during the observations. However, this method provided a broad subjective aid in understanding the upwelling process. From the data and the various modes of presentation it was concluded that: (1) The region covered in the May 1970 cruise appears to be separated into four distinct regions: the southern end of Monterey Bay near Point Pinos , the northern end of the Bay near Santa Cruz, the region off Point Montara, and the area west of the entrance of San Francisco Bay. All stations within these regions exhibited high oxygen, high particulate count, low beam transmissivity , and high chlorophyll a. This is in contrast to the two productive regions found on the cruise of May 1969: off Point Ano Nuevo and an area the extent of which is larger than any of the regions in the recent cruise. (2) Upwelling appeared to be stronger in the May 1970 cruise, which can be judged by comparing the surface isotherms decreasing a djacent to the coast. Labyak's 1969 data show isotherms decreasing seaward from 12 C along the coast to approximately 10.5 C and then another increase. The most recent data for the upwelling season show low temperatures along the coast as low as 9.5 C increasing seaward. 49 (3) A fair relationship exists between particle count and beam trans- mission. The particle counts observed in the analysis of 2 ml samples ranged from a total count of approximately 5000 for the cleanest water to in excess of 200,000 for very turbid water. (4) The linear relationship that was observed by Bader and Gordon [2, 8] for particle distribution in sea water can be distorted in the nannoplankton range by productivity in the upper \q m or so. (5) A subsurface oxygen maximum exists for more than half of the stations, which is probably due to a greater escape than productive rate of dissolved oxygen. (6) The spread of sizes of particles counted was from 1.59 |i to 32.0 \d. (7) Unlike the results for saturation of oxygen (60-70%) observed by Park, Pattullo and Wyatt [15] for upwelling waters off the Oregon coast, most of the surface waters appear to be 100% saturated. The four productive areas lasted in (1) above are super-saturated. (8) Tidal currents in the vicinity of the entrance to San Francisco Bay affect the distribution of the parameters observed in the study, especially in the upper 15 m. (9) The warm surface layers contain high oxygen, high chlorophyll at, and low nutrients, which indicate high productivity. There are also associated with these areas high particle counts and low transmissivity . The warm stable layers allow phytoplankton maximum exposure to light, and with strong thermal gradients below these layers appear also strong gradients for particles and for transmissivity. This is not the rule for all productive areas, because the profile of total Coulter count shows a tongue of water which exhibits high counts extending through the area of sharpest thermal gradient toward the bottom for station line A. 50 V. SUGGESTIONS FOR FUTURE RESEARCH There is a distinct lack of data, both raw and processed, for the region described in the study. Still more data are needed to fill this void. The following recommendations are made: The fluorometric analysis for chlorophyll should be broadened to include a determination of phaeophytin. This would enable high pigment to ox ygen ratios to be explained in terms of an inactivation of the chlorophyll a as phaeophytin. Weekly analyses of chlorophyll a could be run with a continuous reading fluorometer for the Monterey Bay region. These determinations could be made to coincide with spectrophotometry analyses of a larger area from an aircraft. Since an NPS aircraft is already modified for photography, slight additional modifications would allow a rapid determination of surface productivity after an overflight of a surface ship for calibration. In addition to a continuous fluoro- metric analysis, plankton tows should be obtained in areas of high productivity to identify which species lead to the high observed concentrations . Since diurnal variations have been observed for both chlorophyll a and for phosphate, hourly observations should be made for a 24 hour period at an anchor station to observe possible variations of these parameters in Monterey Bay. A more complete study of the nutrients of the area could determine the concentrations of silicates, phosphates, and nitrates, and the effect of each on productivity in the region. The sigma-t profile for the area, especially during upwelling, should be studied to determine the effects of vertical advection on the water 51 column and to investigate offshore sinking of more dense water along isentropic surfaces. The sigma-t data should then be examined to see if possible relationships exist with oxygen, both below the surface layer and in regions of particulate maxima. Additional samples should be taken from areas of past particulate maxima to observe light scattering, and possible relationships between scattering and particle size distribution should be investigated. 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" rr> s o CN o O O IT) o o o o CO o o o o QUJO-H-X — Z JuJH-LUCiUO o S-i PL, n e c 5 M fa 119 c CD O U-l o u r- W 3 M Pn QujQ_h-x — z ^w^-wcei/i 120 E c 122 £ c ^ Q •$ .;.'.;..•.;.•.'.;..: I.'.'.'.'.! o o o o in QLUQ.H-X -2L ^UJh- O o o o CO o o o o ^> o c 03 J-J 4-) •H E CO C Vj H E CO cu PQ o ■H 14-1 O 00 w o M 124 TABLE I Station Data: Location, Time, Depth, Weather, Sound Velocity, Temperature, Transmittance , Oxygen Chlorophyll, and Phosphate 125 STATION: A -1 DEPTH: 92m 1 DATE : 4-29-70 TIME: 1130 PST LAT: 36°-39 .9 'N LONG: 121° -54. 9'W WIND . 330° SPEED : 9 AIR TEMP (DRY) : 58° BARO: 30.14 1 CLOUD AMT: clear HEIGHT (FT) : -- SEA: 330° SWELL: 310T -8 z SV T TRANS Z °2 Chloro- phyll M4 S °t m m/sec °C $/m m ml/1 mg/m |J& ktfl $o 0 8.35 2.34 N N 2 8.42 3. 18 O 0 5 10 7.53 4.93 3.78 1.17 D D 15 3.95 0.98 A A 20 2.87 0.41 T T 30 2.82 0.33 A A 60 2.91 0.77 STATION: A-2 DEPTH: 97m ■ - DATE : 4-29-70 TIME : 1130 PST LAT 36°-40. 5'N LONG: 121° -53. 7 'W WIND : SPEED : AIR TEMP (DRY) : 69° BARO: 30.15 CLOUD AMT: 1 HEIGHT(FT) : 500 SEA -- SWELL: 300c -8 Z SV T TRANS I Z °2 Chloro- P04 S °t phyll m m/sec °C i/m m ml/1 mg/m |jg At/1 io 0 1493.2 11. 6* y 9.6 0 8.18 4.98 N 3 1493.1 11. 51 5 10.1 5 8.20 3.53 O 5 1493 . 1 11.5* I 10.3 10 8.27 2.11 7 1491.3 10.8] 10.9 20 6.49 2.39 D 10 1490.0 10.61 14.5 35 2.74 0.89 A 15 1489.6 10.52 ! 20.0 50 2.84 0.62 T 20 1488.2 9.8/ ' 35.0 A 25 1485.6 9.2^ y 64.3 34 1484.7 9.0: 1 68.5 44 1484.4 8.8< ) 65.8 59 1484.2 8.7C ) 67.0 75 1484.0 8.6! i 50.0 126 STATION: A -3 DEPTH: 88m PDATE: 4-29-70 TIME : 1500 PST IAT: 36°-42.2'N LONG: 121°-54.7'W WIND: SPEED: AIR TEMP (DRY) : 61° BARO: 30.17 CLOUD AMT: 1 HEIGHT(FT) : 2500 SEA: SWELL: 310°-8 m SV m/sec TRANS m °2 ml/1 Chloro phyll 3 PO, g/m (J.gAt/1 S o 3 7 11 17 20 26 34 50 60 74 1490. 1 1490.0 1489.4 1488.2 1487.4 1486.2 1485.1 1484.4 1484.0 1483.6 10.71 10.65 10.51 10.12 9.88 9.43 9.15 8.85 8.68 8.54 16 17, 16 19 37.0 43.2 60.0 64.0 57.6 52.4 63.1 0 5 10 20 35 50 60 75 23 ,07 19 ,72 ,81 ,65 ,43 ,80 7.36 6.15 5.28 3.61 0.26 0.34 0.38 2.38 0.71 0.73 0.73 1.17 2.06 2.13 2.19 2. 18 STATION: A-4 DEPTH : _8.6m_ DATE : 4-29-70 TIME : 1615 PST LAT 36°-43.8^ LONG: 1210-54 ,6'W WIND 250° SPEED : 13 AIR TEMP (DRY) : 54° BARO: 30.18 CLOUD AMT: 2 HEIGHT(FT) : 3000 SEA 250°-l SWELL: 310°- -8 Z SV T TRANS 1 Z °2 Chloro- P04 S ct phyll m m/sec °C ifm m ml/1 , 3 mg/m |igAt/l %o 0 _ _ 28.1 0 5.32 2.07 1.28 2 1487.8 10. 0( 3 27.7 5 6.00 1.84 1.28 7 1487.9 io. o; > 27.5 10 -- 1.16 1.32 11 1487.0 9.71 a 38.7 15 5.16 1.79 1.41 17 1486.7 9.6 5 41.6 25 5.03 1.64 1.42 23 1486.8 9.6< + 42.0 40 4.85 2.24 1.51 32 1486.9 9.5 3 43.7 55 2.41 0.40 2.11 47 1486.8 8.9 5 66.4 70 3.20 1.14 2.07 56 1484.6 8.8. 3 67.4 70 1484.3 8.7 1 65.6 127 STATION: A- 5 DEPTH: 95m DATE : 4-29- ■70 TIME : 1800 PST IAT 36°-45. O'N LONG: 121 -54.3 W WIND 280° SPEED : 16 AIR TEMP (DRY) : 55° BARO: 3C .12 CLOUD AMT: 6 HEIGHT (FT) : 1500 SEA 280°-4 SWELL: 290u-8 Z SV T TRANS Z °2 Chloro phyll - ?o4 S °'t m m/sec °C t/m m ml/1 / 3 mg/m MgAt/1 %o 0 1489.3 10.49 13.5 0 6.62 3.50 1.00 5 1489.3 10.48 14.7 5 6.62 2.24 1.01 10 1488.8 10.28 16.0 10 5.99 1.06 1.22 15 1487.3 9.88 33.3 20 4.82 1.57 1.51 19 1486.9 9.72 41.2 30 3.60 0.85 1.77 25 1486.7 9.64 43.7 35 2.88 0.44 1.92 29 1486.6 9.61 45.2 50 2.42 0.49 2.07 38 1485.2 9.17 65.6 70 2.15 0.30 2.22 49 1484.4 8.87 55.4 68 1483.3 8.50 34.1 79 1483.2 8.40 60.5 STATION: A-6 DEPTH: 463m DATE : 4-29-70 TIME : 1945 PST LAT 36°-46.5 N LONG: 121°- 54. 3 ■w WIND : 3 10< 3 SPEED : 15 AIR TEMP (DRY) : 51° BARO: 30.13 CLOUD AMT: 6 | HEIGHT (FT) : 1500 SEA 290°-4 SWELL: 290°-8 Z SV T TRANS I Z °2 Chloro- P04 s at phyll m m/sec °C i/m m ml/1 mg/m MgAt/l fo 0 1488.5 10. 2i I 16.7 0 6.16 1.66 1.01 2 1488.6 10. 2< ) 16.7 10 6.34 5.93 1.03 5 1488.5 10.2* I 16.6 25 4.88 1.63 1.07 9 1488.6 10.2/ ' 16.6 35 2.62 0.31 2.03 15 1488.7 10.2! > 17.3 60 2.12 0.19 2.12 19 1487.9 9.9: L 25.5 80 1.97 0.15 2.15 25 1486.4 9.7^ i- 42.5 100 1.98 0.12 2.24 39 1483.8 8.7! > 71.7 58 1483.4 8.5( > 68.9 76 1483.5 8.5( ) 75.3 95 1483.5 8.4( ) 74.7 128 STATION: A-7 DEPTH : 91 m DATE : 4-29- 70 TIME: 2200 IAT 36°-47.5'N LONG: 121° -54.3 W WIND • 085° SPEED : 5 AIR TEMP (DRY) : 51° BARO: 30. 17 CLOUD AMT:c] .ear HEIGHT (FT) : ■ SEA 085°- 1 SWELL: 315a-6 Z SV T TRANS Z °2 Chloro phyll - P°4 S at m m/sec °C t/m in ml/1 / 3 mg/m MgAt/1 $0 0 1488.7 10.31 13.9 0 6.28 4.14 0.97 2 1488.7 10.31 14.1 5 6.30 3.30 1.02 5 1488.8 10.32 15.0 12 6.22 0.81 1.02 11 1487.8 10.03 24.0 25 4.50 3.46 1.52 15 1487 . 1 9.87 23.2 35 3.49 0.58 1.48 26 1485.9 9.44 48.9 50 2.87 0.34 2.00 35 1484.4 8.94 68.7 65 2.36 0.21 2.04 50 1483.8 8.70 81.0 73 1483.4 8.48 64.0 STATION A-; DEPTH 75r DATE: 4-2 9-7 0 TIME: 2330 LAT: 36°-49.8'W LONG: 12lo-54.5'W WIND: 030c SPEED AIR TEMP(DRY) : 51° BARO 30.18 CLOUD AMT;clearf HEIGHT (FT) ; SEA: 030°- 1 SWELL: 315u-5 m SV m/sec TRANS il m m m 1/1 Chloro- phyll mg/m P0, IJgAt/1 %o 0 2 9 14 23 34 53 63 1489.8 1489.8 1489.8 1489 1487 1484 1483 1483.0 10.62 10.62 10.58 10.49 9.79 8.99 8.55 8.41 17.3 18.7 18.7 20.0 35.6 69.6 53.0 41.8 0 5 10 25 30 45 6.74 6.82 6.80 4.94 3.30 2.36 2.51 3.92 2.41 2.07 0.65 0.28 0.73 0.73 0.78 1.49 1.86 2. 19 129 STATION: A-9 DEPTH: 53m DATE: 4-30-70 TIME: 0100 IAT: 36U-51.4'N LONG: 121°-54.3'W WIND: 005° SPEED: 5 AIR TEMP(DRY) : 49° BARO: 30.17 CLOUD AMT:clear HEIGHT(FT): SEA: 005°- 1 SWELL: 315°-5 sv TRANS m m/ sec 0 2 5 10 16 20 25 31 37 41 1491 1491 1491 1490 1488 1485.2 1484 . 3 1483.9 1483.6 11.08 11.11 11.03 10.80 10.20 9.29 8.98 8.81 8.70 10.0 10.0 10.1 10.9 22.4 3] .3 63.8 73.4 69.6 69.7 m °2 ml/1 Chloro- PO, phyll 3 mg/m (jgAt/1 0 5 10 20 30 40 7.22 6.77 7.13 4.54 2.47 2.26 4.37 6.43 6.68 0.48 0.45 0.35 0.26 0.32 0.45 1.48 2.04 2.10 STATION: A-! .0 DEPTH: 2 9m DATE: 4-30- 70 TIME: 0200 LAT 36°-52.9 N LONG: 12 1°- -54.1 W WIND: 340° SPEED: 4 AIR TEMP (DRY) : 48° BARO: 30 16 CLOUD AMT: c lear HEIGHT(FT): " SEA 340°-4 SWELL: 315°-5 Z SV T TRANS r Z 09 Chloro phy 1 1 - p04 S °t m m/sec °C $/m m 3 ml/1 mg/m HgAt/1 io 0 1492.1 11.3 1 5.7 0 7.14 3.70 0.25 3 1492.3 11.3: 3 5.9 9 6.73 6.93 0.47 6 1492.3 11.3: 3 5.7 19 4.38 0.78 1.48 8 1492.0 11.21 3 6.8 21 3.13 0.35 2.07 11 1491.9 n.i, 3 8.0 14 1491.6 n.i 1 9.6 17 1490.4 10.7: I 42.6 20 1487.9 10.0, 3 18.4 24 1485.1 9.1. 3 23.4 26 1484.6 9.01 3 55.4 130 STATION: A- 11 DEPTH : 24m DATE: 4-30-70 TIME: 0320 LAT:36°-54.1'N LONG:121°-54.4"W WIND: 350° SPEED: 4 AIR TEMP (DRY) : 49° BARO: 30.15 CLOUD AMT:clear HEIGHT (FT) : -- SEA: 350°-l SWELL: 315°-5 sv l/sGC TRANS °2 ml/1 Chloro- P0. phyll 3 mg/m ^igAt/1 u 0 5 9 15 17 19 21 1491.2 1491.5 149] .5 1490.8 1490.0 1487.9 1486.3 11 11 11 10 10 10 9 07 10 08 86 64 01 57 8.1 7.8 8.9 13.2 19.0 14.9 13.2 0 5 10 15 17 6.51 7.07 7.08 6.79 6.28 1.83 8.60 9.67 2.20 2.38 0.31 0.28 0.35 0.51 0.75 STATION A-12 DEPTH: 18m DATE: 4-30-70 TIME: Q430 LAT: 36°-55.7'N LONG: 121°-54.4'W WIND 000c SPEED AIR TEMP (DRY) : 50c BARO 30.14 CLOUD AMT:clear HEIGHT(FT) : SEA: 000°- 1 SWELL: 315°-5 m SV TRANS in /sec it m Chloro- P0, m m 1/1 phyll 3 mg/m [jgAt/1 io 0 3 6 9 12 15 1491, 1491 1491 1491, 1490, 1489 11.02 1 1 . 04 11.03 11.01 10.93 10.57 7.1 8.1 8.3 8.3 9.5 11.6 0 3 6 9 12 7.25 7.17 7.11 7.18 7.24 1.37 1.05 0.44 1.33 2.34 0.29 0.33 0.33 0.37 0.37 131 STATION: B-l DEPTH: 16m DATE: 4-30-70 TIME: 0600 IAT: 36°- 56. 2* N LONG: 121°-59.3'W WIND: SPEED: AIR TEMP (DRY) : 48° BARO: 30.15 CLOUD AMT: 10 HEIGHT (FT) : 800 SEA: SWELL: 270°-4 m SV i/sec TRANS #/m m °2 ml/1 Chloro phyll 3 PO, g/m |agAt/l io 0 1490.3 10.82 6.5 3 1490.1 10.73 7.2 6 1490.0 10.68 8.1 9 1489.9 10.63 8.8 12 1489.7 10.57 9.0 7.06 6.88 6.56 7.37 7.64 7.58 50 56 71 STATION: b-2 DEPTH : 29m _ ._ DATE: 4-30-70 TIME: 07 00 IAT 36°-54.8 'N LONG: 121°- 5 9 . 1 *W WIND: SPEED: AIR TEMP (DRY) : 49° BARO : 30. 15 CLOUD AMT: 10 j HEIGHT(FT) : 100 SEA SWELL: 270 o_ '+ Z SV T TRANS I Z 0 Chloro- PO^ S o phyll t m m/sec °C #/m m ml/1 mg/m (igAt/1 f>o 0 1489.4 10.5. 3 12.9 0 6.96 5.53 0.51 2 1489.4 10.5 4 12.1 5 6.84 3.83 0.55 5 1489.5 10.5 4 12.2 10 6.96 8.40 0.56 10 1489.2 10.4 2 14.6 15 6.05 6.83 0.91 15 1487.8 10.0 1 17.7 20 2.67 1.58 2.15 21 1485.6 9.5 1 13.8 24 1484.4 9.0 2 9.5 132 STATION: B-3 DEPTH: 34m DATE: 4-30-70 TIME: 0745 IAT: 36°-53.5'N LONG: 121°-59.4'W WIND: SPEED: -- AIR TEMP(DRY) : 48° BARO: 30.15 CLOUD AMT: 10 HEIGHT(FT) : 800 SEA: SWELL: 270°-4 SV TRANS m m /sec rm °2 ml/1 Chloro phyll 3 PO, CL g/m (JgAt/1 1 6 10 17 21 26 30 1488.7 1488.6 1487.3 1487.3 1487.3 14 86.7 1484.8 10.27 10.26 9.85 9.80 9.78 9.60 9.09 14.9 15.6 21.7 20. 1 20.1 20.1 18.6 0 5 10 20 6.33 6.26 4.82 5.17 4.37 6.16 3.11 4.87 0.78 0.87 1.52 1.34 STATION: B-4 DEPTH : 72m DATE : 4-30-70 TIME : 0830 LAT: 36°-51 . 8'N LONG: 12 1°- -59.1 W WIND -- SPEED: AIR TEMP (DRY) : 49° BARO: 30 .15 CLOUD AMT: 10 HEIGHT(FT): 100 SEA: SWELL: 2 7 0°-4 Z SV T TRANS r Z °2 Chloro- PO, S o 4 t phyll m m/sec °C i/m m ml/1 mg/m (jgAt/1 $>o 0 1487.4 9.9 1 26.0 0 5.92 3.90 0.80 5 1486.9 9.8 D 29.2 20 4.50 1.33 1.64 10 1486.9 9.7 3 30.7 30 2.47 1.53 1.79 20 1486.4 9.5 5 36.9 40 2.61 0.45 2.13 30 1486.2 9.4 7 31.7 50 2.23 0.45 2.23 40 1484.0 8.8 I 36.4 60 2.34 0.27 2.25 50 1484.0 8.7 5 20.0 60 1483.3 8.5 I 32.3 65 1483.4 8.4 9 38.8 133 STATION: B-5 DEPTH: 7 3m DATE: 4-30-70 TIME: loon LAT; 36°-50.4'N LONG: 121U-58.8'W WIND: SPEED: AIR TEMP(DRY) : 54° BARO: 30.17 CLOUD AMT: 10 HEIGHT(FT) : 100 SEA: SWELL: 270Q-4 . Z SV T TRANS Z °2 Chloro- phyll P04 s ot m tn/sec °C #/m m ml/1 , 3 mg/m |-lgAt/l io 0 N 38.6 0 4.83 1.18 1.59 5 0 37.8 10 3.22 0.79 1.98 10 42.7 25 2.47 0.39 2.25 21 44.2 40 2.40 0.31 2.22 31 D 47.8 50 2.38 0.29 2.23 42 A 53.7 60 2.01 0.19 2.21 51 T 23.8 80 2.15 0.19 2.24 61 A 27.4 66 31.5 STATION: B-6 DEPTH: i >75m DATE : 4-30 -70 TIME: 1100 LAT 36°-48.9'N LONG: 121' 5-58.8 ■w WIND __ SPEED : AIR TEMP (DRY) : 55° BARO : 30 .18 CLOUD AMT: io-i HEIGHT(FT): 100 SEA -- SWELL: 2" 70°-4 Z SV T TRANS 1 z °2 Chloro " P04 s at phyll m m/sec C i/m m ml/1 ; 3 mg/m f-igAt/1 io 0 N O 31.7 0 4.54 2.03 1.34 5 31.7 10 5.56 2.65 1.45 10 31.1 25 2.33 0.31 2.38 19 39.8 40 1.98 0.22 2.45 30 D 45.2 60 2.25 0.20 2.50 40 A 62.2 80 2.41 0.18 2.51 60 T 59.5 80 A 68.3 100 67.1 134 STATION: B-7 DEPTH: 600m DATE : 4-30- 70 TIME : 1245 LAT 36°-47.1' N LONG: 121.Q-58.4 W WIND : SPEED : AIR TEMP (DRY) : 55° BARO : 30.18 CLOUD AMT: 10 HEIGHT (FT) : 100 SEA -- SWELL: 270°-4 Z SV T TRANS Z °2 Chloro phyll - P04 — — -t S ot m m/sec °C */m m ml/1 / 3 mg/m HgAt/1 $0 0 1487.5 9.93 27.7 0 6.24 2.13 1.46 3 1487.5 9.86 27.4 6 6.48 1.89 1.49 6 1486.7 9.73 27.8 18 5.49 3.38 1.64 10 1486.4 9.63 29.5 30 5.19 1.91 1.77 14 1486.5 9.61 32.5 40 4.35 0.86 1.95 18 1486.5 9.60 32.8 60 2.74 0.26 2.19 22 1486.5 9.59 33.1 75 2.60 0.18 2.28 31 1485.7 9.37 48.4 95 2.12 0.21 2.35 40 1485.2 9. 12 57.1 50 1484.4 8.86 64.6 60 1483.8 8.63 73.8 76 1484.1 8.63 77.2 93 1484.0 8.52 68.4 STATION: r-8 DEPTH : 558m DATE • 4-30- •70 TIME : 1500 LAT 36°-45.3 N LONG: 12 lc -58.7 •w WIND 270° SPEED : 16 AIR TEMP (DRY) : 55° BARO: 30. 13 CLOUD AMT:C. .ear HEIGHT(FT) : SEA. 270°-3 SWELL: 300°- 7 Z SV T TRANS i Z °2 Chloro - p04 S ot phyll m m/sec °C %/m m ml/1 mg/m M.gAt/1 io 0 1487.8 10.02 29.7 0 6.46 2.92 1.43 5 1487.3 10. Of ) 26.4 5 6.29 2.62 1.42 10 1486.3 9.6C ) 30.5 15 5.44 2.68 1.78 16 1486.4 9.5< ) 35.2 30 5.21 2.30 1.67 19 1494.4 9.6] 38.5 40 4.44 0.70 1.88 29 1485.8 9.3c" I 50.8 55 2.92 0.24 2.17 39 1484 . 7 9.0C ) 66.2 75 2.46 0.21 2.40 58 1484.1 8.7( > 72.0 100 1.91 0.23 2.18 69 1484.3 8.71 ! 82. 1 75 1484.4 8.7( ) 83.8 82 1483 . 9 8.5/ ' 73.7 135 STATION: B-9 DEPTH: 366m DATE: 4-30-70 TIME : 1645 IAT: 36°-44.3'N LONG: 121°-59.1'W WIND: 270° SPEED: 18 AIR TEMP(DRY) : 56° BARO : 30.12 CLOUD AMT clear HEIGHT (FT) : -- SEA: 270°-4 SWELL: 300Q-8 m SV m/sec TRANS m m 1/1 Chloro phyll 3 P0, g/m (jgAt/1 %o 0 5 11 14 20 30 40 59 80 96 1487.4 1487.2 1486.7 1486.3 1486.3 1485.1 1484.5 1483.9 1483.7 9.93 9.87 9.71 9.54 9.48 9. 13 8.84 8.58 8.42 27.4 27.1 28.3 31.1 40.7 46.9 64.0 70.0 61.8 63 0 5 10 20 30 50 80 100 6.63 6.61 6.47 6.14 5.46 3.04 2.06 2.25 2.46 2.57 2.74 2.90 1.98 0.22 0.24 0.16 1.33 1.38 1.35 1.45 1.53 2.17 2.36 2.41 0 STATION: B- 10 DEPTH : 480m DATE • 4-30- 70 TIME : 1900 LAT 36°-42.6 *N LONG: 121°- 59. 4 W WIND 305° SPEED : 15 AIR SEA TEMP (DRY) 54° BARO : 30.07 CLOUD AMT:c lear HEIGHT (FT) : 305°-3 SWELL: 300°-8 Z SV T TRANS 1 Z °2 Chloro " P04 S ct phyll m m/sec °C $/m m ml/1 mg/m |igAt/l io 0 1487.9 10. 0< ) 22.3 0 6.41 4.06 1.37 5 1490.0 10. Oi 5 22.5 20 6.04 5.34 1.40 10 1488.1 10. Oi I 22.9 40 5.33 2.29 1.74 20 1489.4 9.8( > 31.0 60 2.77 0.39 2.33 30 1487.3 9.7; I 40.1 80 2.22 0.26 2.34 39 1485.5 9.2/ f 66.3 100 2.35 0.19 2.43 49 1484.4 8.8" 1 65.0 60 1484.0 8.71 5 63.3 75 1484. 1 8.6/ * 69.9 85 1483.9 8.5( 5 78.1 89 1483.8 8.5 L 82.2 93 1483.7 8.4; ' 80.9 98 1483.7 8.4^ \r 80.1 136 STATION: B-ll DEPTH: 108m DATE : 4-30- 70 TIME : 2000 IAT 36°-41.2 N LONG: 121° -59.2 •w WIND • 315° SPEED : 19 AIR TEMP (DRY) ■ 53° BARO: 30 .07 CLOUD AMT:c lear HEIGHT (FT) : ■ SEA 315°-4 SWELL: 310°-9 Z SV T TRANS Z °2 Chloro phyll " P°4 1 S ot m m/sec °C f/m m ml/1 / 3 mg/m l-lgAt/l $0 0 1489.1 10.43 20.2 0 6.81 3.03 1.19 11 1489.2 10.41 20.7 10 6.95 2.87 1.16 21 1488.4 10.17 26.7 30 3.54 1.96 2.03 30 1486.4 9.61 66.1 50 2.57 0.49 2.36 41 1484.6 9.98 68.2 65 2.36 0.26 2.32 51 1484.2 8.81 69.3 90 2. 10 0.32 2.42 61 1483.9 8.70 73.3 71 1483.9 8.62 85.6 81 1484.0 8.60 — 90 1484.0 8.55 83.6 100 1483.6 8.40 87.4 STATION: B-12 DEPTH: 100m DATE :4-30-70 TIME: 2115 IAT 36°-39.4' N LONG: 121°- 59. 2 •w WIND : 315° SPEED: 14 AIR TEMP (DRY) 51° BARO: 30 .12 CLOUD AMTrcl sar HEIGHT (FT): -- SEA 310°-4 SWELL: 310°-8 Z SV T TRANS r Z °2 Chloro- P0. S o 4 t phyll m m/sec °C $/m m ml/1 , 3 mg/m LigAt/1 $o 0 1489.7 10.6( 3 24.2 0 7.75 5.02 0.81 6 1489.8 10.6. 3 21.6 10 7.45 5.01 0.90 12 1489.9 io.6: 3 21.5 30 2.95 0.38 2.13 21 1486.8 9.6 1 57.5 75 2.94 0.31 2.28 31 1484.2 8.9 3 84.7 90 2.16 0.37 2.40 52 1484.1 8.7 7 87.3 71 1484 . 0 8.6 d 86.0 93 1483.8 8.5 1 76.0 137 STATION: B- -13 DEPTH: 82 Tl [DATE: 4-30-70 TIME: 2215 IAT 36°-38.2 N LONG: 121 o_ 59. 1 •w WIND: 315° SPEED: 10 AIR TEMP (DRY) : 50° BARO: 30 . 14 CLOUD AMT:clear HEIGHT (FT): -- SEA 315°-4 SWELL: 315 °-8 Z SV T TRANS Z 0o Chloro- PO. S o 2 phyll 4 fc m m/sec °C t/m m ml/1 mg/m g.gAt/1 $o 0 1490.5 10.75 14.4 0 7.42 6.08 0.86 10 1488.6 10.51 37.0 20 3.42 0.68 1.97 15 1485.4 9.37 68.2 40 3.18 0.47 2.19 26 1484.3 8.89 76.8 36 1483.8 8.63 81.4 39 1483.5 8.60 82.9 51 1483.4 8.50 82.9 61 1483.6 8.52 83.8 66 1483.5 8.49 80.9 STATION: C-l DEPTH: 503m DATE: 4-30-70 TIME: 23 50 LAT: 36°-36'N LONG: 122°-01.6'W WIND: 315° SPEED: 6 AIR TEMP (DRY) : 50° BARO: ■ 30.14 CLOUD AMT: clear HEIGHT (FT) : -- SEA: 315^-4 SWELL: 315^-8 l m SV m/sec TRANS i/i m in 1/1 Chloro- phyll mg/m P0, O. UgAt/1 $0 0 6 11 21 31 51 70 91 1492.4 1492.5 1488.8 1486.3 1484.8 1484.6 1484.2 1483.3 11.37 11.40 10.47 9.58 9. 13 8.93 8.67 8.38 5.6 5.2 28.8 62.4 70.1 87.0 89.1 92.1 0 15 30 60 90 ,37 ,44 4.02 01 00 7.74 1.79 0.43 0.25 0.20 0.34 1.53 1.97 2.05 2.08 138 STATION: C-2 DEPTH :1000m DATE: 5-1-70 TIME: 0145 IAT: 36°-33.6'N LONG: 12 2 °- 04. 6' W WIND: 330° SPEED: 10 AIR TEMP (DRY) : 50° BARO: 30.12 CLOUD AMTrclear HEIGHT (FT) : SEA: 335°-3 SWELL: 320°-8 m SV m/sec TRANS £/m Chloro- phyll 3 P0, a m ml/1 mg/m ^igAt/1 0 1491.2 11.04 12.6 3 149] .4 11.07 11.0 8 1491.4 11.07 10.7 13 1489.2 10.43 41.0 16 1487.5 10.00 49.6 20 1487.0 9.77 50.4 26 1487.1 9.76 53.6 37 1486.3 9.48 60.4 46 1486.2 9.42 63.5 55 1485.4 9.15 70.4 65 1484.6 8.90 74.2 77 1484.4 8.77 81.5 85 1484.5 8.74 83.5 97 1484.6 8.72 81.4 0 3 8 12 25 55 75 100 7.27 8.00 8.12 7.63 5.31 4.02 3.49 2.86 4.78 5.85 6.24 5.06 2.95 0.62 0.42 0.20 0.46 0.47 0.49 0.62 65 94 30 08 STATION: C-3 DEPTH: 1600m DATE : 5-1- 70 TIME: 0315 LAT 36°-31.3 *N LONG : 122O-07W WIND 335° SPEED: 10 AIR TEMP (DRY) : 53° BARO: 30.09 CLOUD AMT:c lear HEIGHT (FT): -- SEA 335°-3 SWELL: 320°-8 Z SV T TRANS 1 Z °2 Chloro - po4 s at phyll m m/sec °C i/m m ml/1 mg/m UgAt/l $0 0 1487.6 10.0" 1 64.9 0 5.97 0.32 1.41 5 1487.6 10.01 b 65.1 15 5.75 0.42 1.46 10 1487.6 10. 0( D 66.6 30 5.30 1.04 1.17 15 1487.4 9.9: > 67.3 50 4.97 1.87 1.78 20 1486.2 9.5< 3 69.6 90 3.15 0.32 1.97 30 1485.8 9.3< 1 74.4 39 1486.4 9.5: I 65.6 51 1486.5 9.4" 7 61.8 69 1485.9 9.2: 3 65.8 89 1485.1 8.9 5 76.0 139 STATION: D- 1 DEPTH 2300m DATE: 5-1-7 0 TIME: 0600 IAT: 36°-35.3'N LONG: 122°-10.7 "W WIND: SPEED: AIR TEMP(DRY) : 50° BARO : 30. 11 CLOUD AMT: clear HEIGHT (FT): -- SEA: SWELL: 300°-4 m SV m/sec TRANS m m 1/1 Chloro phyll 3 P0, m g/m MgAt/1 0 4 8 16 26 35 44 55 66 77 86 97 1488.3 1488.5 1488.5 1488.6 1488.2 1488 1486 1485 1485 1485 1485.1 1484.4 10.39 10.39 10.38 10.37 10.21 10.19 9.56 9.38 9.30 9.17 8.97 8.74 53.9 53.6 53.1 56.3 64.4 64.4 79.5 84.0 82.8 83.3 86.0 87.0 0 10 25 45 65 95 6.33 6.28 04 18 86 35 0.72 0.96 0.80 0.53 0.32 0.18 1.04 1.06 1.18 1.61 1.72 1.91 STATION: d- 2 DEPTH : 1550m DATE : 5-1- 70 TIME : 0800 LAT 36°-39. 7 'N LONG: 122°- 15.2 W WIND : SPEED: AIR TEMP (DRY) : 50° BARO : 30.12 CLOUD AMTc] .ear HEIGHT(FT): -- SEA -- SWELL: 300°-4 Z SV T TRANS 1 Z °2 Chloro PO. S o 4 t phy 1 1 m m/sec °C i/m m ml/1 , 3 mg/m iagAt/1 $o 0 1488.7 10.4 1 48.5 0 6.46 0.71 0.94 5 1488.8 10.4. j 48.5 20 6.35 1.09 0.99 10 1488.9 10.4. 5 48.6 35 5.28 0.25 1.45 20 1489.0 10. 4' \ 49.4 60 4.77 0.86 1.75 40 1485.9 9.4 1 82.8 100 3.77 0.26 1.98 51 1485.6 9.2 7 84.4 65 1485.3 9.1 3 90.0 80 1484.8 8.9 1 87.0 86 1484.7 8.8 I 84.2 100 1484.2 8.6 3 89.7 140 STATION: D-3 DEPTH: 1 .350m DATE : 5-1-70 TIME : 1000 IAT 36°-42.7 N LONG: 122Q-18.7 W WIND 315° SPEED: 4 AIR TEMP (DRY) 54° BARO : 30.14 CLOUD AMT: clear HEIGHT (FT): — SEA 315°-2 SWELL: 315u-6 Z SV T TRANS Z °2 Chloro- phyll P0. S o, 4 t m m/sec °C i/m m ml/1 / 3 mg/m (OgAt/1 $o 0 1487.4 9.98 63.0 0 6.02 0.28 1.36 10 1487.4 9.98 63.1 40 5.71 0.68 1.46 20 1487.2 9.82 64.0 65 5.56 1.11 1.52 30 1487.5 9.85 64.0 80 5.13 1.09 1.67 51 1487.4 9.74 61.9 100 4.55 0.34 1.83 70 1487.0 9.54 62.0 75 1487.0 9.48 51.0 86 1486.8 9.35 58.2 95 1486.2 9.18 80.6 100 1486.2 9.14 80.6 STATION: E-l DEPTH: 7 50m DATE: 5-1-70 TIME: 1130 LAT 36°-47'N LONG: 12 2 °- -14.7 'W WIND: 305° SPEED: 3 AIR TEMP (DRY) : 64° BARO: 30 14 CLOUD AMT: cl ear HEIGHT(FT): -- SEA 305°-2 SWELL: 315°-8 Z SV T TRANS I Z 0„ Chloro- phyll P04 S at m m/sec °C i/m m 3 ml/1 mg/m IJgAt/1 $o 0 1487.7 10. 1 I 71.7 0 5.56 0.29 1.35 5 1487.1 9.9 7 71.2 25 5.74 1.79 1.45 10 1486.9 9.8 9 68.0 50 3.44 0.47 2.08 20 1486.5 9.6 7 66.0 75 3.02 0.30 2.10 31 1486.0 9.5 3 70.0 100 2.45 0.28 2.30 40 1485.8 9.4 \ l\.l 52 1484.8 9.0 5 79.6 71 1484.2 8.7 5 88.6 91 1484.2 8.6 2 90.4 100 1484.6 8.6 7 90.0 141 STATION: E-2 DEPTH: 510m DATE : 5-1-70 TIME : 1330 IAT 36°-50 N LONG: 122°-10.2 •w WIND : 295° SPEED : 12 AIR TEMP(DRY) ■ 61° BARO : 30.16 CLOUD AMT: clear HEIGHT(FT) : SEA 290°-3 SWELL: 315"-7 Z SV T TRANS Z °2 Chloro- phyll P04 S at m m/sec °C */m m ml/1 mg/m \j.g< \t/l fo 0 1489.4 10.53 79.1 0 5.65 0.08 1.39 3 1487.8 10.17 78.5 10 5.66 0.08 1.46 7 1486.4 9.73 66.7 15 5.96 1.68 1.41 16 1485.8 9.4S 59.0 25 5.92 3.10 1.50 25 1485.7 9.41 68.6 40 4.83 1.63 1.37 35 1485.8 9.36 45.3 60 3.95 0.58 -- 45 1485.6 9.27 49.0 80 2.46 0.28 2.29 54 1485.7 9.26 48.0 95 5.13 1.60 2.01 62 1485.3 9.08 55.5 71 1484.9 8.91 60.8 78 1484.1 8.67 75.0 85 1483 . 9 8.55 93.0 STATION: E-3 DEPTH: 142m - DATE : 5-1-70 TIME : 1500 IAT 36°-51.6' N LONG: 122°-09. 7 'W WIND : 295° SPEED : 13 AIR TEMP (DRY) 53° BARO: 30.17 CLOUD AMT:cl 2ar HEIGHT (FT) : SEA 295°-2 SWELL: 310°-6 Z SV T TRANS 1 Z °2 Chloro- P04 S ot phyll m m/sec °C i/m m ml/1 mg/m LlgAt/1 %o 0 _. „_ 54.0 P 0 6.29 1.76 1.37 3 1488.3 10.2 5 53.4 10 6.01 2.20 1.48 8 1486.7 9.7 7 39.5 25 5.56 3.71 1.75 12 1485.9 9.5< 3 39.5 35 4.95 1.48 1.92 16 1485.5 9.3 7 39.5 55 4.49 2.00 1.95 26 1485.4 9.31 3 48.0 75 2.68 0.24 2.28 35 1485.4 9.2< \ 37.2 95 2.29 0.21 2.40 44 1485.1 9.1 1 42.5 51 1485.1 9.0 7 44.0 58 1485.0 9.0 1 50.0 67 1484.2 8.7' \ 62.8 77 1483 . 7 8.5 7 87.5 85 1483.6 8.4 9 91.0 142 STATION: E-4 DEPTH : 95m DATE : 5-1-70 TIME: 1700 IAT 36°-53.3' N LONG: 122° -09.2'W WIND • 295o SPEED: 12 AIR TEMP (DRY) : 56° BARO : 30 .15 CLOUD AMTrclear HEIGHT (FT): -- SEA -- SWELL: 290°-4 Z SV T TRANS z o2 Chloro- phyll P0. S o\ 4 t m m/sec °C $/m m ml/ 1 / 3 mg/m HgAt/1 $0 0 1489.0 10.60 26.5 0 6.20 1.83 1.48 3 1487.5 9.92 27.8 10 5.67 5.34 1.53 9 1488.3 10.14 26.5 35 3.17 0.45 2.25 16 1485.2 9.25 32.5 55 3.20 0.48 2.32 25 1485.2 9.19 31.3 75 1.96 0.36 2.52 35 1485.0 9.07 35.1 45 1484.8 8.98 41.8 54 1484.4 8.86 51.0 64 1483.8 8.61 57.5 73 1483.5 8.48 78.0 STATION: E- ■5 DEPTH : 76 m DATE: 5-1-70 TIME : 1800 LAT 36°-54.3'N LONG: 122° -07.5 •w WIND: 300° SPEED: 13 AIR TEMP (DRY) : 57° BARO: 30. 14 CLOUD AMT: clear HEIGHT (FT) : -- SEA 300°- 1 SWELL: 310°-6 Z SV T TRANS 1 Z 0 Chloro- PO^ S a phyll t m m/sec °C i/m m ml/1 mg/m (agAt/1 $0 1 1490.6 10. 8( > 9.7 0 7.14 6.40 1.00 5 1490.9 10.92 12.1 25 4.17 1.54 1.99 11 1485.4 9.4C ) 37.7 50 2.82 0.27 2.30 15 1485.2 9.23 \ 42.2 20 1484.9 9.1/ 44.1 30 1484.7 9.0S ) 49.3 40 1483.5 8.7c" 5 62.7 50 1483.3 8.5< ) 77.4 62 1483.3 85. ( ) 61.9 70 1483.3 8.4/ ' 46.1 143 STATION: E-6 DEPTH : 52m H)ATE: 5-1-70 TIME: 1900 IAT: 36U-55.7'N LONG: 1220-06. 3 'W WIND: 300° SPEED: 5 AIR TEMP(DRY) : 54° BARO: 30.15 CLOUD AMT clear HEIGHT (FT): - - SEA: 300°-l SWELL: 300°-5 m SV m/sec TRANS i/x m °2 ml/1 Chloro- phyll mg/m PO, (OgAt/1 $c 0 5 11 21 30 41 45 1492.7 1492.8 1487.1 1484 1484 1484 1484 11.40 11.47 9.70 9.02 8.98 8.89 8.72 5.1 5.1 31.2 43.8 45.0 45.5 45.7 0 3 25 8. 16 8.37 3.86 7.91 11.98 1.15 0.30 0.30 2.13 STATION: E-7 DEPTH : 36i n DATE: 5-1-70 TIME: 2000 IAT 36°-55.9 *N LONG: 122° -04.8 •w WIND: SPEED: AIR TEMP (DRY) : 51° BARO: 30 .16 CLOUD AMT: clear HEIGHT(FT): -- SEA -- SWELL: 280°-4 Z SV T TRANS 1 Z 0 Chloro- PO^ S a phyll L m m/sec °C i/m m ml/1 mg/m (jgAt/1 $o 0 1491.9 11. 2* t 5.7 0 7.31 9.89 0.49 4 1491.8 ii. i; ' 6.5 10 5.88 8.39 1.17 10 1488.7 10. 3( ) 16.2 20 4.42 1.46 1.99 16 1486.0 9.5: 5 28.5 30 2.84 0.67 2.36 20 1485.5 9.3^ t 42.5 25 1485.3 9.2^ f 42.5 30 1484.6 9.0^ f 28.8 144 STATION: F -1 DEPTH : 44m PdATE: 5-1-70 TIME: 2300 IAT 36°- 57. 4'N LONG: 122°- 10 W WIND: SPEED: -- AIR TEMP(DRY) : 51° EARO: 30.20 CLOUD AMT: 10 HEIGHT (FT) : 100 SEA -- SWELL: 290°-5 Z SV T TRANS Z 0? Chloro- phyll po4 s ct m m/sec °C #/m m 3 ml/1 mg/m ^ig M/l $o 0 N 7.6 1 0 7.09 12.35 0.71 5 0 7.6 10 3.50 8.14 1.10 10 20.2 20 2.01 1.16 2.02 15 46.0 30 1.49 0.84 2.28 20 D 46.0 25 A 35.1 30 1 30.4 35 A 30.0 STATION: F-2 DEPTH: 42m •■' ■ DATE : 5-2-70 TIME : 0130 LAT 37°-00. 4'N LONG: 122° -14. 3 *W WIND -- SPEED -- AIR TEMP (DRY) 48° BARO: 30.19 CLOUD AMT: 10 HEIGHT(FT): 100 SEA -- SWELL: 290°-5 Z SV T TRANS l Z °2 Chloro- P04 S ot phyll m m/sec °C i/m m ml/1 mg/m [jg At/1 9.6 0 9.22 3.46 0.57 3 1489.8 10.3' f 9.7 5 9.47 4.09 0.51 5 1489.6 10.2: J 9. 1 20 6.70 3.72 1.24 10 1485.8 9.K ) 10.0 35 5.13 0.45 1.81 15 1484.9 8 . 8J 1 13.9 45 4.66 0.84 1.93 20 1484.3 8.6" J 47.1 55 4. 10 0.55 2.01 25 1484. 1 8.5* 3 68.0 60 4.29 0.59 2.03 30 1483 . 8 8.5( ) 71.9 70 3.80 0.55 2.08 40 1483.6 8.4: J 79.4 75 3.67 0.63 2.20 50 1483.6 8.3( 3 81.2 60 1483 . 6 8.3: I 74.8 70 1483.4 8.3( D 59.2 75 1483 . 5 8.2" 1 59.0 153 STATION: I -7 DEPTH: 73m DATE: 5-3- 70 TIME: 1800 LAT 37°-ir N LONG: 122°-29.1 •w WIND: 340° SPEED: 15 AIR TEMP (DRY) : 50° BARO: 2 9.91 CLOUD AMT: 10 HEIGHT(FT): 500 SEA 3 20° -4 SWELL: 320°-8 Z SV T TRANS Z 0 Chloro phyll P0. S n 4 t m m/sec °C $1* m ml/1 mg/m IOgAt/1 $o 0 1489.2 10.21 10.2 1 0 8.27 5.59 0.70 5 1489.3 10.17 10.6 5 8.50 5.39 0.77 9 1488.9 10.09 13.2 15 7.01 4.11 1.13 15 1485.9 9.24 52.5 25 5.17 2.15 1.73 19 1484.9 9.02 73.0 50 4.26 0.41 2.02 30 1484.1 8.7C 81.9 40 1484.0 8.59 81.4 49 1483.9 8.51 79.5 59 1483.4 8.35 76.4 63 1483.2 8.2b 60.5 STATION: i- 8 DEPTH : 57m ■ - DATE : 5-3-70 TIME : 1900 LAT 37O-10. k ■N LONG: 12; l°-26. 7'W WIND : 340° SPEED: 16 AIR TEMP (DRY) 49° BARO: 29.91 CLOUD AMT: 10 | HEIGHT (FT) : 50 SEA 325°-4 SWELL: 325° -8 Z SV T TRANS 1 Z °2 Chloro- P04 S at phyll m m/sec °C i/m m ml/1 mg/m (JgAt/1 $0 0 1487.9 9.8. > 16.2 0 7.62 2.56 1.00 6 1488.0 9.8; > 16.6 5 7.57 2.52 1.00 10 1486.6 9.4< ? 39.6 15 5.64 1.49 1.65 16 1484.9 8.9' 1 70.7 20 5.05 0.72 1.85 19 1484.1 8.7^ + 73.3 30 4.63 0.54 2.06 25 1483.6 8.5' 7 79.0 40 4.46 0.52 2.09 29 1483 . 6 8.5: I 71.2 40 1483 . 6 8.5( D 67.3 48 1483.7 8.41 5 68.9 154 STATION: 1-9 DEPTH: 3: 1m T1)ATE: 5-3-70 TIME: 2 000 LAT 37°-10.9 'N LONG : L22 o_25 2'WJWIND: 335° SPEED: 17 AIR TEMP (DRY) : 49° BARO: 29. 91 1 CLOUD AMT: 10 HEIGHT (FT): 50 SEA 325°-4 SWELL: 330°- 8 Z SV T TRANS Z 0 Chloro- phyll P0. S n 4 t m m/sec °C i/m m ml/1 mg/m [igAt/1 $o 1 1486.0 9.35 28.8 i 0 6.34 2.17 1.57 6 1486.2 9.33 29.4 5 6.35 6.13 1.56 10 1486.2 9.32 29.8 10 6.16 3.76 1.65 15 1485.6 9.14 36.4 20 5.33 1.32 1.98 19 1484.9 8.94 45.3 24 1484.4 8.78 44.5 STATION: j-1 DEPTH: 33m DATE: 5-3-70 TIME: 2100 LAT: 37°-15.8'N LONG: 122°-27.5'W WIND: 325° SPEED: 13 AIR TEMP(DRY) : 49° BARO: 2 9.93 CLOUD AMT: 10 HEIGHT (FT): 75 SEA: 320°-3 SWELL: 320°-7 I SV m m /sec TRANS 4/ ■p/m m m 1/1 Chloro- phyll mg/m P0, |agAt/l %o 0 5 9 15 20 25 1489.4 1489.6 1488.8 1486.0 1484.7 1483.7 10.26 10.26 10.05 9.26 8.91 8.57 11.0 11.0 17 39 53.0 56.6 0 5 11 22 8.34 8.58 8.31 4.87 5.16 4.82 5.89 0.86 0.86 0.86 0.93 2.02 155 STATION: J-2 DEPTH: 38m DATE: 5-3-70 TIME: 2200 IAT: 37°-21.6'N LONG: 122°-29.6'W WIND: 315° SPEED: 10 AIR TEMP(DRY) : 49° BARO: 29.94 CLOUD AMT: 10 HEIGHT (FT) : 100 SEA: 315°-2 SWELL: 315°-6 m SV m/sec TRANS ih °2 ml/1 Chloro phyll 3 P0, g/m (jgAt/1 0 6 9 14 20 24 28 1488.2 1488.2 1488. ] 1485.2 1484.3 1483.9 1484.0 9.93 9.93 9.87 9.06 8.74 8.64 8.62 19.0 19.4 21.4 72.3 63.2 54.9 39.8 0 5 15 23 30 7.95 8.15 6.05 4.66 3.82 3.86 2.89 2.49 0.70 1.48 1.07 1.10 1.68 2.15 2.45 STATION: J-3 DEPTH: 45m - DATE : 5-3-70 TIME: 2330 IAT 37°-26.7 ■N LONG: 12 2 °- -31. 7 w WIND 315° SPEED: 8 AIR TEMP (DRY) : 49° BARO: 29 .97 CLOUD AMT: 10 j HEIGHT(FT) : 100 SEA 315°-2 SWELL: 315°- h Z SV T TRANS r ' Z °2 Chloro- P04 S ot phyll m m/sec °C i/m m ml/1 mg/m (jgAt/1 $o 0 1490.2 10.5 '4 9.5 0 9.70 6.71 0.49 5 1490.3 10.5 3 9.3 5 11.21 4.28 0.51 10 1486.7 9.5 1 31.5 15 7.30 2.82 1.46 16 1484.8 8.9 3 54.3 20 5.79 1.47 1.87 21 1484.2 8.7 2 61.7 29 4.50 0.85 2.26 26 1483.8 8.5 9 63.0 35 4.70 0.48 2.33 31 1483.8 8.5 8 63.3 36 1484.0 8.5 8 39.4 39 1484.0 8.5 8 36.2 156 STATION: j- ': DEPTH : 39m DATE : 5-4-70 TIME: 0100 LAT 37°-31. 9 'N LONG: 122°-33. 4'W WIND 315° SPEED : 8 AIR TEMP (DRY) : 51° BARO: 29.95 CLOUD AMT: 10 HEIGHT(FT): 100 SEA 315°- 2 SWELL: 315c -4 Z SV T TRANS Z °2 Chloro- phyll P04 s ot m m/sec °C 5&/m m ml/1 / 3 mg/m MgAt/1 %o 0 1494.3 9.92 19.8 I 0 7.36 3.65 1.44 4 1486.6 9.74 20.4 4 7.61 4.18 1.49 8 1485.6 8.98 24.1 12 6.89 3.89 1.51 12 1484.7 8.80 64.9 16 6.12 3.93 1.81 16 1484.0 8.66 59.2 25 4.81 0.71 2.32 19 1483.9 8.64 57.0 29 4.98 0.71 2.33 25 1484. 1 8.64 56.0 29 1484.0 8.61 53.7 33 1484.2 8.61 52.4 STATION: K- 1 DEPTH: 46m DATE : 5-4-70 ItIME: 0200 LAT 37°-31.6 'N LONG: 122°-35.2 W WIND : 315° 1 SPEED: 8 AIR TEMP (DRY) : 52° BARO: 29.92 CLOUD AMT: 10 | HEIGHT(FT) : 100 SEA 315°-2 SWELL: 315°-4 Z SV T TRANS Z °2 Chloro- po4 s ot phyll m m/sec °C f/m m ml/1 mg/m [igAl/l ioo 0 4.1 0 _ _ 5.87 0.52 3 1492.3 ii. i: I 5.2 5 9.69 5.81 0.48 5 1492.1 10.5; I 5.5 15 6.73 5.25 1.61 9 1485.9 9.3: I 31.4 20 5.74 3.03 1.90 12 1484.4 8.8 5 64.0 25 5.40 1.37 2.11 15 1483.8 8.5' 3 76.9 35 5.04 1.16 2.39 20 1483.8 8.6; I 73.8 24 1483.8 8.5 1 68.5 29 1483.8 8.5 3 52.9 34 1484.0 8.5 3 35.8 40 1484.0 8.5 7 24.2 157 STATION: K- 2 DEPTH: 48m DATE : 5-4- 70 TIME: 0335 IAT 37°-32. l'N LONG: 122°-37. l'W WIND : 315° SPEED : 10 AIR TEMP (DRY) : 51° BARO: 29.95 CLOUD AMT: 10 HEIGHT(FT) : 100 SEA 310O-2 SWELL: 315^ -4 Z SV T TRANS Z °2 Chlorc phyll P0, 4 1 S ot m m/sec °C f/m m ml/1 / 3 mg/m LlgAt/1 $0 0 1493.6 11.65 5.0 i 0 10.56 2.65 0.38 3 1493.5 11.64 5.0 5 9.93 6.20 0.51 6 1493.5 11.66 4.6 12 6.65 7.54 1.63 8 1487.1 9.78 17.2 20 5.30 1.17 2.09 12 1486 . 6 9.42 39.2 27 4.99 0.63 2.13 15 1485.3 9.10 69.4 40 5.08 0.93 2.38 20 1484.5 8.86 69.2 24 1483.6 8.58 69 6 27 1483.7 8.56 63.7 34 1483.7 8.56 59.2 38 1483.8 8.55 52.4 40 1483.9 8.56 27.5 -^ ■■... . rr. ■ — STATION: K-3 DEPTH : 50m DATE: 5-4-70 TIME: 0435 LAT: 37°-31.9'N LONG: 122°-38.7'W WIND: 315° SPEED: 10 AIR TEMP(DRY) : 51° BARO: 29.95 CLOUD AMT: 10 HEIGHT (FT) : 100 SEA: 315°-2 SWELL: 315°-4 SV TRANS m m /sec */ m m m 1/1 Chloro- phy 1 1 3 tn g/ in PO, UgAt/1 $o 0 2 5 8 11 14 20 24 30 34 40 44 1492.3 1492.3 1492.4 1492.3 1486.8 1486.0 1484 1483 1483 1483 1483 1483 11.35 11.34 11.34 11.28 9.52 9.28 8.75 8 53 52 53 52 53 5.3 5.3 5.4 14.5 19.0 35.5 67.8 62, 65 65 42 24 0 3 17 24 29 44 10.48 10.59 5.36 5.17 4.68 6.30 2.72 4.55 1.77 0.69 2.17 0.38 0.37 1.42 1.83 2.15 2.50 158 STATION: K-4 DEPTH: 57m DATE: 5-4-70 TIME: 0530 LAT: 37°-32.2'N LONG: 122°-41.3'W WIND: 310° SPEED: 9 AIR TEMP(DRY) : 50° BARO: 29.96 CLOUD AMT: 10 HEIGHT (FT) : 700 SEA: 310°-2 SWELL: 300°-6 L^_ m SV tn/sec TRANS 'm m m 1/1 Chloro- phyll / 3 mg/m P0, ugAt/i $o 0 3 5 8 11 14 17 21 24 29 35 39 44 50 1492.6 1492.7 1492.8 1492.8 1487.4 1486.3 1485.7 1484.8 1484.6 1484.3 1484.1 1484.1 1484.1 1483.4 11.41 11.40 11.44 11.42 9.73 9.36 9.15 8.90 8.82 8.70 8.65 8.59 8.57 8.38 22 22 22 21 1 2 2 2 8.9 19.0 43.7 54.6 56.1 62.2 58.4 59.7 54.3 29.8 0 5 12 29 44 47 10.72 10.61 9.04 6.03 5.28 4.85 0.57 2.20 3.85 1.08 1.53 1.98 0.34 0.29 0.40 1.64 1.92 2.11 STATION: k-5 1 " DEPTH : 64m DATE : 5-4-70 TIME : 0635 IAT: 37°-31.9 *N LONG: 122°-43.1 W WIND : 310° SPEED : 9 AIR TEMP (DRY) : 50° BARO: 29.96 CLOUD AMT: 10 HEIGHT(FT): 800 SEA: 310°-2 SWELL: 300°-6 Z SV T TRANS I Z °2 Chloro- P04 s at phy 1 1 m m/sec °C i/m m ml/1 , 3 mg/m |-lgAt/l %o 0 1492.5 11.1 8 31.8 i 0 9.32 1.44 0.15 3 1492.6 11.2 6 31.7 5 9.79 1.52 0.11 5 1492.6 11.2 f4 32.9 10 9.87 2.26 0.18 9 1490.6 10.5 9 16.7 29 6.35 1.54 1.54 14 1485.6 9.2 9 32.9 39 5.44 0.71 1.85 20 1485.0 8.9 6 39.0 52 4.63 4.14 2.32 24 1484.1 8.6 9 60.9 29 1484.1 8.6 6 58.0 34 1484.2 8.6 6 58.7 39 1484.1 8.6 2 59.3 44 1483.9 8.5 4 33.1 48 1483.7 8.4 4 22.2 ■ 52 1483.6 8.4 0 20.5 57 1483.7 8.3 9 14.9 159 STATION: K-6 DEPTH: 77m DATE: 5-4-70 TIME : 0800 IAT: 37°-31.6'N LONG : 122°-46.9'W WIND: 320° SPEED: 9 AIR TEMP (DRY) : 50u BARO: 2 9.94 CLOUD AMT: 10 HEIGHT (FT) : 900 SEA: 32 0°- 1 SWELL: 300°-6 m SV m/sec TRANS i/v* m °2 ml/1 Chloro phyll 3 P0, m g/m pgAt/1 0 5 10 15 25 34 47 58 62 66 1486.2 1487.3 1487.4 1487.5 1485.5 1485.5 1484.4 1484 . k 1484.5 1484.4 9.76 9.7 6 9.75 9.72 9.14 8.78 8.64 8.63 8.59 8.58 62.3 62.3 45.9 33.4 78.5 70.8 65.7 62.2 61.6 63.3 0 10 30 40 60 6.16 6.44 5.18 5.06 5.17 1.04 2. 18 0.89 1.06 1.29 1.20 1.13 1.70 1.77 1.86 STATION: K-7 DEPTH: 86m DATE: 5-4-70 TIME : 0900 LAT: 37°-32"N LONG: 122°-49.9'W WIND: 315° SPEED: 8 AIR TEMP (DRY) : 53° BARO : 29.96 CLOUD AMT: 10 HEIGHT (FT) : 1000 SEA: 310°-2 SWELL: 310°-5 I Ill SV m/sec TRANS i/i m 1/1 Chloro- phyll 3 m */ in P0, IJgAt/l $o 0 5 9 20 30 40 48 56 65 71 79 1489.6 1489.8 1489.7 1489.6 1489.5 1488.8 1488.0 1485.5 1484.9 1484.1 1483.4 10.49 10.50 10.46 10.37 10.30 10.10 9.74 8.99 8.76 8.46 8.21 63.1 62.4 61.3 59.8 59.4 59.9 46.4 86.7 87.2 87.9 74.1 0 10 30 40 50 60 6.67 6.76 6.63 6.25 4.82 0.62 0.83 0.94 1.66 0.35 0.28 0.89 0.92 0.98 1.11 1.70 1.78 160 STATION: K~ 3 DEPTH: 100m DATE : 5-4-70 TIME : 1000 LAT : 37°-32.3 'N LONG: 122°- 54. 5 'W WIND : 310° SPEED : 8 , AIR TEMP (DRY) : 55° BARO: 29.96 CLOUD AMT: 10 HEIGHT (FT) : 1000 SEA : 310°-2 SWELL: 315°-4 Z SV T TRANS Z °2 Chloro- phyll P04 S at m m/sec °C */m m ml/1 mg/m fig At/1 $o 0 1491.2 10.98 i 61.2 i 0 6.65 0.42 0 .73 5 1491.4 11.02 61.2 7 6.97 0.82 0 .71 9 1491.3 10.91 L 53.8 20 5.37 0.56 1 .28 18 1488.5 10.11 75.8 30 4.89 0.33 1 .50 29 1485.6 9.2/ ' 86.6 50 4.08 0.33 1 .75 39 1485.7 9.15 87.0 70 3.50 0.16 1 .87 58 1484.9 8.79 89.0 90 3.65 0.23 1 .98 76 1484.0 8.46 88.6 84 1483.4 8.24 86.1 88 1483.4 8.22 85.5 91 i 1483.3 8.18 82.6 STATION: K-9 DEPTH: 167m DATE 5-4-70 TIME : 120C LAT: 37°-31.2' N LONG: 12 20-58'W WIND 315° SPEED : 13 AIR TEMP (DRY) : 59° BARO: 30.02 CLOUD AMT: 10 HEIGH' r(FT): 1000 SEA: 315°-2 SWELL: 315°-4 Z SV T TRANS Z °2 Chloro- pcv, s °t phyll m m/sec °C i/m m ml/1 mg/m fig- kt/1 %o 0 6 9 15 19 28 39 56 71 89 1493.9 1493.9 1491.4 1490.3 1489.4 1487.7 1485.4 1484.8 1484.3 1484.2 11.88 11.87 11.04 10.62 10.37 9.75 9.13 8.75 8.54 8.46 68.2 68.8 63.5 67.9 70.0 65.6 83.6 90.2 90.2 90.6 0 10 15 25 40 70 100 56 46 72 ,53 ,38 ,73 ,84 0.15 0.28 0.35 0.41 0.49 0.11 0.09 0.61 0.76 0.85 1.10 1.50 1.86 1.97 161 STATION: 10 DEPTH: 755m DATE : 5-4-70 TIME : 1330 LAT 37°-32.3 *N LONG: 123°-03.8 ■w WIND : 315° SPEED : 14 AIR TEMP (DRY) : 58° BARO: 30.00 CLOUD AMT: < 3 HEIGHT (FT) : 4000 SEA 315°-2 SWELL: 315°-4 i Z SV T TRANS Z °2 Chloro- phyll P04 S ct m m/sec °C #/m m ml/1 / 3 mg/rn [igAt/1 $o 0 1495.1 12.27 72.6 0 6.42 0.11 0.46 6 1495.3 12.28 72.6 10 6.02 0.14 0.48 9 1495.3 12.25 73.1 15 5.98 0.10 0.74 14 1495.2 12.20 76.5 25 6.58 0.13 0.99 19 1488.7 10.27 90.8 36 6.36 0.18 1.15 24 1489.8 10.48 87.7 50 5.96 0.69 1.45 29 1489.8 10.45 88.4 67 5.58 0.89 1.56 38 1488.2 9.93 78.7 100 3.85 0.22 1.95 47 1487 . 1 9.47 75.4 61 1486.2 9.13 81.8 75 1485.5 8.86 80.6 93 1484.1 8.39 96.0 100 1484. 1 8.34 96.0 STATION: K- LI DEPTH : 1175m DATE : 5-4-70 TIME : 1500 LAT 37°-32.4 N LONG: 123O-09.3 W WIND : 310° SPEED : 14 AIR TEMP (DRY) : 55o BARO: 29.99 CLOUD AMT: 7 HEIGHT (FT) 4000 SEA 305°-2 SWELL: 3150-4' Z SV T TRANS l Z °2 Chloro- P04 S °t phyll m m/sec °C $/m m ml/1 mg/m MgAt/1 %o 0 1494.4 12.0 & 63.8 1 0 6.44 0.16 0.50 4 1494.6 12.0 7 61.8 5 6.46 0.17 0.50 8 1494.3 11.9 3 60.6 15 6.51 0.15 0.66 15 1494.0 11.8 7 71.0 36 6.19 0.14 1.22 21 1489.8 10.5 8 75.8 41 5.75 0.14 1.33 24 1489.9 10.5 1 80.1 55 5.19 0.12 1.54 34 1488.2 9.9 7 85.1 68 5.57 0.54 1.58 44 1487.8 9.7 5 82.3 80 5.44 0.44 1.77 54 1486.8 9.4 0 87.5 100 6.08 0.11 0.64 72 1486.6 9.2 3 76.5 88 1486.0 8.9 8 79.5 100 1486.0 8.8 6 84.2 162 STATION: L- 1 DEPTH: 1463m DATE : 5-4- 70 TIME: 1645 LAT 37°-36.8 N LONG: 123°-15.' WW WIND : 300° SPEED : 14 AIR TEMP (DRY) 52° BARO: 30.00 CLOUD AMT: 5 HEIGHT(FT) : 3700 SEA 305°-2 SWELL: 310°-4 Z SV T TRANS Z °2 Chloro phyll " P04 s ot m m/sec °C */m m ml/1 mg/m IJgAt/1 $0 0 1491.6 11.07 64.7 0 7.07 0.25 0.89 5 1491.8 11.09 66.4 5 6.90 0.25 0.86 10 1490.3 10.61 68.5 10 6.94 0.22 0.89 14 1487.9 9.91 61.2 15 6.81 0.40 1.09 19 1487.1 9.64 55.8 30 6.04 1.43 1.39 24 1486.8 9.52 58.2 50 5.09 0.72 1.75 34 1486.3 9.32 70.4 75 4.92 0.22 1.88 44 1485.5 9.05 83.3 100 5. 17 0.26 1.88 55 1485.2 8.9C 89.3 150 3.22 0. 12 2.09 64 1485.0 8.75 90. 1 200 3.89 0.21 2.06 75 1485.0 8.72 88.4 84 1484.6 8.57 88.0 100 1484.9 8.55 87.0 STATION: L-2 DEPTH : 146m DATE : 5-4-70 TIME : 1800 LAT 37°-42.2'I M LONG: 123°-07 7'W WIND ■ 290° SPEED : 14 AIR TEMP (DRY) : 55 o BARO: 30.00 CLOUD AMT: 4 HEIGHT(FT) : 3500 SEA 300°-2 SWELL: 310°-4 Z SV T TRANS Z °2 Chloro- P04 s ot phyll m m/sec °C i/m m ml/1 mg/m HgAt/1 f>o 0 1489.4 10.4( 3 77.2 0 6.46 0.17 1.00 5 1489.4 10.4. 5 77.5 5 6.71 0.21 1.03 11 1485.4 9.3 5 83.8 15 5.55 0.20 1.26 15 1484.6 8.9 3 85.0 30 5.30 0.51 1.44 21 1485.3 9.1 5 84.2 50 4.83 0.31 1.65 31 1485.4 9.1 3 84.7 75 3.42 0.11 1.97 40 1485.8 9.1 5 84.7 100 3.38 0. 12 2.03 59 1484.6 8.7 3 89.3 78 1483.6 8.4 D 90.9 94 1482.5 7.9 f4 83.9 163 STATION: L-3 DEPTH: 71m DATE : 5-4-70 TIME: 2000 LAT 37°-47.7 »N LONG: 122°-59.7 W WIND : 290° SPEED : 13 AIR TEMP (DRY) : 53° BARO: 30.02 CLOUD AMT: 8 HEIGHT (FT): 1500 SEA 2 80° -2 SWELL: 290°-4 Z SV T TRANS Z °2 Chloro- phyll P04 S at m m/sec °C i/m in ml/1 mg/m |igAt/l u 0 1489.2 10.19 6.1 l 0 9.06 2.62 0.67 6 1489.2 10. 17 6.1 5 9.28 3.23 0.42 10 1487.3 9.65 10.9 20 5.89 0.76 1.58 20 1485. 1 8.95 32. 1 30 4.81 1.37 1.86 31 1483.9 8.6C 52.2 45 4.40 1.95 1.96 39 1483.5 8.43 70.8 60 4.20 1. 16 2.08 49 1483.3 8.36 68.2 . 59 1482.8 8. 16 61.5 63 1482.1 7.92 51.8 STATION: L- 4 DEPTH : 55m -■ DATE: 5-4-70 TIME: 2130 LAT 37°-52.6' N LONG: 1220-52 5'W WIND: 295° SPEED: 19 AIR TEMP (DRY) : 54° BARO: 30 04 CLOUD AMT: 10 !HEIGHT(FT): 1500 SEA 295°-4 SWELL: 290°-4 Z SV T TRANS i Z 0 Chloro- phyll P04 s at m m/sec °C $/m m 3 m 1 / 1 mg /m tagAt/i $o 0 1488.3 9.9' * 12.0 0 8.36 2.67 0.69 5 1488.4 9.9' * 11.7 10 8.37 4.06 0.72 10 1488.4 9.9. 5 11.7 25 5.79 1.07 1.69 15 1486.4 9.4; I 28.7 45 4.74 0.94 1.98 19 1484.6 8.8" 1 67. 1 29 1484.1 8.6. 5 72.7 39 1483.6 8.4' 3 78.1 44 1483.6 8.4' \ 63.5 49 1483.6 8.4' + 52.9 1 164 STATION: M-l DEPTH: 47m DATE: 5-4-7 0 TIME: 22 00 IAT: 37U-53.2'N LONG: 122°-49.2'W WIND: 295u SPEED: 20 AIR TEMP(DRY) : 54° BARO: 30.05 CLOUD AMT: 10 HEIGHT (FT) : 1500 SEA: 295°-4 SWELL: 290°-4 m SV m/sec TRANS i/ m °2 ml/1 Chloro- P0, phyll 3 mg/m iagAt/1 0 4 8 14 19 23 28 32 38 1488.3 1488.4 1488.4 1486.2 1484.8 1484.6 1484.3 1484. 1 1483.7 9.94 9.96 9.92 9.32 8.91 8.83 8.71 8.65 8.51 9.8 9.8 10.4 29.7 64.1 67.0 69.6 69.0 46.1 0 5 10 20 30 9.04 8.74 9. 12 6.38 5.63 2.41 6.33 4.82 1.52 1.00 0.51 0.53 0.60 1.49 1.69 STATION: M-2 DEPTH: 52m . .- DATE: 5-4-70 TIME: 2330 LAT 37°-49'N LONG : i; >2°-48 8'W WIND: 2 90° SPEED: 14 AIR TEMP (DRY) : 54° BARO: 30.04 CLOUD AMT: 10 HEIGHT (FT) : 1500 SEA 290°-4 SWELL: 290°- -4 Z SV T TRANS z 0 Chloro- phy 1 1 P0. S a H- t* m m/sec °C f/m m 3 ml/1 mg/m HgAt/1 $o 0 1487.0 9.5 8 17.7 0 7.41 6.18 0.94 6 1487.0 9.6 0 16.6 10 7.53 3.77 1.15 10 1486.4 9.4 4 32.3 25 5.76 0.78 1.70 19 1484.8 8.9 1 54.9 30 6.03 0.88 1.72 29 1484.2 8.7 0 71.0 40 5.16 0.69 1.86 34 1483.9 8.6 0 67.6 39 1483.7 8.5 1 61.8 43 1483.8 8.5 0 55.7 165 STATION: M-3 DEPTH: 46 >m DATE: 5-5-7 0 TIME : 0045 IAT 37°-46.4 N LONG: 12 2 c '-46 9'W WIND: 280° SPEED: 10 AIR TEMP (DRY) 52° BARO: 30. 03 CLOUD AMT: 10 HEIGHT(FT) : 1000 SEA 280°-4 SWELL: 28C )°-4 Z SV T TRANS Z 0o Chloro- PO. S o 2 phyll 4 fc rn m/sec °C */m m ml/1 mg/m~ (jgAt/1 $o 0 1484.6 8.95 49.6 0 6.05 0.72 1.67 3 1484.8 8.94 49.8 3 4.91 0.36 1.88 5 1484 . 7 8.94 50.4 10 5.68 1.02 1.77 9 1484.8 8.93 50.3 15 6.15 0.87 1.97 20 1483.0 8.43 65.2 29 4.74 0.7 7 2.16 25 1483.4 8.40 51.0 30 1482.9 8.33 55.5 40 1483.0 8.32 49.0 42 1483. 1 8.33 47.0 STATION: m-4 DEPTH : 36m DATE: 5-5-70 TIME: 0200 LAT 37°-43.5' N LONG: 122°-44.5 *W WIND: 270° SPEED: 9 AIR TEMP (DRY) : 50° BARO : 30.02 CLOUD AMT: 10 j HEIGHT (FT): 1000 SEA 270°-3 SWELL: 270°-5 Z SV T TRANS I Z 0 Chloro- PO^ S a phy 1 1 t m m/sec °C i/m m ml/1 mg/m (jgAt/1 $0 0 1490.3 10.7' L 16.0 0 8.54 4.82 0.83 3 1490.3 10.7: J 16.1 3 8.56 2.96 0.83 5 1490.3 10.7: I 15.2 10 7.45 1.25 1.45 9 1488.8 10.2: \ 38.1 15 6.29 0.93 2.17 12 1485.2 9.4 L 65.0 29 4.41 1.03 2.24 15 1483.5 8.5" 1 67.0 19 1483.2 8.4: I 54.2 24 1482.8 8.3: 5 44.0 29 1482.8 8.2* 5 36.6 30 1482.7 8.2! 3 33.1 166 STATION: M-5 DEPTH: 33m DATE: 5-5-70 TIME: 0300 IAT: 37U-40.2'N LONG: 122°-42.1'W WIND: 270° SPEED: 10 AIR TEMP(DRY) : 50° BARO: 30.01 CLOUD AMT: 10 HEIGHT (FT) : 1000 SEA: 270°-3 SWELL: 270°-5 m SV m/sec TRANS #/m °2 ml/1 Chloro- phyll mg/m P0, C! LtgAt/i $>o o 3 5 10 14 21 25 28 1490.0 1490.0 1490.1 1487 1484 1483 1483 1483 10.81 10.76 10.81 9.82 8.75 8.48 8.45 8.44 19.1 19.1 18.8 44.0 67.0 44.9 36.5 33.6 0 3 8 12 24 6.59 7.23 6.84 7.24 5.47 1.15 1.55 2.86 3.90 1.73 1.35 1.40 1.10 0.98 1.60 STATION: m-6 DEPTH : 36m DATE: 5-5-70 TIME: 0400 LAT: 370-37. 5' N LONG: 122°-40.2'W WIND: 27 0° SPEED: 10 AIR TEMP (DRY) : 50° BARO: 30.00 CLOUD AMT: 10 HEIGHT(FT) : 1000 SEA: 270°-3 SWELL: 270°-6 ! SV TRANS m in /sec i/i m m 1/1 Chloro- P04 S phyll o mg/m (agAt/1 $° 0 3 5 11 15 20 24 31 1490.3 1490.6 1490.7 1486.1 1485.5 1484.4 1484.0 1483.7 10.80 10.87 10.87 9.40 9.09 8.76 8.64 8.54 23.0 22.8 21.2 46.8 48.3 61.9 60.4 18.0 2 11 14 17 25 8.36 8.61 7.18 6.54 5.52 2.91 4.51 5.05 3. 17 0.92 0.87 0.65 0.96 1.41 1.62 167 STATION: M-7 DEPTH: 29m DATE : 5-5- 70 TIME: 0530 LAT 37°-37.3 N LONG: 123°-36 6'W WIND : SPEED: AIR TEMP (DRY) 51° BARO : 30.02 CLOUD AMT: 10 HEIGHT (FT) : 500 SEA 270°-3 SWELL: 290°- ■6 Z SV T TRANS Z °2 Chlorc phyll P0. S o, 4 t m m/sec °C "*/m m ml/1 / 3 mg/m LigAt/1 $o 0 1489.5 10.62 18.1 ! 0 6.69 1.50 1.60 3 14S9.4 10.41 18.1 5 6.64 2.91 1.49 5 1487.3 9.21 17.0 10 6.52 6.50 1.42 10 1484.8 8.78 27.8 16 5.39 0.48 1.65 15 1483.6 8.59 40.8 20 4.84 0.75 1.86 20 1483.8 8.60 32.8 23 1483.8 8.60 27.0 ' 24 1483.8 8.60 23.0 STATION: DEPTH : DATE: TIME : LAT: LONG: WIND: SPEED: AIR TEMP (DRY) : BARO: CLOUD AMT: HEIGHT (FT) : SEA: SWELL: Z SV T TRANS m m/sec C %/m Z 0„ Chloro- PO, S a phyll t o m ml/1 mg/m (jgAt/1 $o i 168 TABLE II Particle Size Distributions 169 co d o o u CJ cu 6 co C QJ .— I CO > •r-l cr w c CO rJ CD JO E 3 P3 0) c c CO X! 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H § Ph W CO O w W H S < i— i Q H i - 55 O C J i— i ON r 1 H 1 S..' r^- i-h vo oo r~ i— i cm J N H vO v£> —l r-l CO 00 CM CO vD i— I r-l O CM CO CO O S CO co o- <-> 197 co CM I O d d o c_> fO u •H r-l (1) x: a, CO c w C r-l 1 > H i ZD M ^ o s H ^ r-l 3 O o CJ X w l 1 > i M 3 3 o > a X Ph H ^ P-. cNim t— i O vO r-~ <— i n — i cx> - 1 vDOOONvfHoOntO ■ — < . — I r-l -Ct C7\ CO I — CM O CM r-l cO r^mror-icNjr-ifMCNioo csioocrsONvor^mvDcM I^vDMO'-'OHi-IvO OONWNvDNfl'-l r^t-~.nO'— to-— ir— i\o I — i — iCTiCTS" — I m in CM O lOvOCMOr- IO>— Ir— (LPl oovo<— i in m n oo m \o r— lr-(r— lOOOr- IOr-( mvomnstmoooON OOOOOO^-fOO CNJClr-lr- lo-)CNJC\l^DLT| OOOOOOr-lOO C\]'— It— I I— I fY-) r- 1 ^5 1T| fl ooooooooo i — ii — li — li — li — I i — I CM CM CM OOOOOOOOO O ■— - 1 CM CM in n ^ i in i — inr^-t^cN i — I i — I i — I co incM00omo o> i — ( i — I i — I i — I CO r»- t— 'cMm^tomcocMOO CICOCOlxNsfvDnNt CO CM r-IO"— IvOst r- < o co r^. o cocor^vomcoo-'-ioocM -— ICTi00cOC0CM — * > — i MOODiAOr-INNNN N(NinsJ--ctNHHOH invDco^ouocococ^mcN CMCMincO-4"'— 'OOO'— I vovooomcooooococo—i CMCMCOCM — irHcoior^omo H H CM co m 198 cm w u C o o oj 4-) 0) E CO •H Q CO u •r-t -C D. CO 4-1 c QJ 1—1 ro •r-l cr to c to u CD E c d ro ON 00 vO LO CNJ <»■ vD CO is !2i CM H-l CM i—l H 1 v— ' H 1 6 h- 1 Z O o 3 t3 O w i— i X i > ^? s r-l H 3 3 o > a ffl Pm H § P-( CO o w w H s — I ■— I O i— I Osf O CO Hff)N CM <— I i— I ■— l •— I O O CA N vO O CO N N CO O S o 00 st r-t O On nO O 00 is CO LO i— I LO CO CM Is CO 00 On st O LO cm -< NO O is OO On On On CO LO i— I LO r— I i— I CM O LO IS LO rs s >N CO o CO o s o o £ r— 1 st CN st CN 199 CO u 01 ■u ^-^ c •r-l /*— s 3 3 00 O cr o C_> w ■X3 C CO m o 1—1 0) CM o CM O CO w co i > Hi S M Z O U 3 o C_> X w § r-l H a :.> 3 c o > 3 w Pm H § Ph CO O W W H S <1 M Q H oo co r-«. m m co o co o- on CO CM r-~ CM CM 00 . hs o — i co CO vO r— i m m cm o> cm r-i cm co m r-~ 00 CM in On CO r— I CM CM vrj- m CM CM !->• ON co r—l m CO VO CM CO CM On r—l CM cm m 00 \0 ON CM o m co CM CM CM O O m vo m cm r—i o o o o o CO CM r-l r-l r-l o o o o o O N4 r-HO CM — i o m O o O r-l CM CO >N cfl o S o CM — i r— i m omnho <}• CM •— I r-l •r-l cr W d co u cu ,Q B CD d a CO ON 00 vO CM CM C\! en m \0 CO CM O CM CO n—' w co 1 > H.i ^ M Z o 3 ^ r-l O C_> X ££ LATI VOLU SAMPLE DEPTH DATE TIME r - S o CM M r--l H < <: s- \ H o CO O m r~» on co cm ro (O CO vO N st CO ^ \D 00 CM H H On CO N O cti cm co m ^o CO vO N vD O o m> sf CM N r-i \£> co r-~ r-» on vd en on en vc> r--. r~- r-~ r-i o o co m co r-^ -—I a r-- \D co oo r-~- mo on rH CO £> o CO ON CM r- 1 CO !-i i-> Q) E CO CO U •r-l ^ CU -d a. co c •r-l cr w -o d CO u 0) E a; d d CO .d o ON CO vO m CM t=> M o CM m >£> CO o CNl co v ' M •O > H 1 l—l 2 O < O I— I J u X l > 1 £ H 3 P 3 o > 3 K P-i H ^ Ph *•£> CO \D lO O •— I CM CM i— ' r- < <— < v£> O i— I LP| CM r- 1 CM r^ cm r^ rv O o - 00 r^ CM O 1 -< m m ro > 3 O o u-i o N mO^D CO co t-< m o vo \D O ^ vO ^O CM CO CM r- • r- I i-l vO O vO O CO sf ON CM I — m cm i— ' ■— i CM CO •— ' ■— I O K) r-l N CO i— * cm rv oo oo r^ On i— i r^ r~- in o i-l i-l CM CO O JS ro m m o 202 APPENDIX Bathythermograph Traces with Temperatures in C and Depths in m 203 in O. -J o 1 ■ i1 o, to UL X O 1 1 o o o 1 T 1 o o 1 t o o m l 1 o o "«■ 1 o [ -323 o i o ITV * 204 U">. U o UJUTl m in- Q I o o o o cs I 1 o o I I o o o CM &^ k^ 1» 205 If) r^ u o ujin LU i/v X Q 1 1 o o o 1 T 1 o o CM t 1 o o 1 1 O o 1 o DL «, o CN UJ i o UJ - o, UJ UY 206 «A. o UJU*I l/V Q I O O I o o I 1 o o I I o o m O, u in 207 BIBLIOGRAPHY 1. Baker, R. E., The Comparison of Oceanic Parameters with Light Attenuation in the Waters Between San Francisco Bay and Monterey Bay, California, M.S. Thesis, Naval Postgraduate School, 1970, 206 p. 2. Bader, Henri, "The Hyperbolic Distribution of Particle Sizes". Journal of Geophysical Research 7 5 (15), 2822-2830, May 20, 1970. 3. Bolin, R. L. and Donald P. Abbot, "Studies on the Marine Climate and Phytoplankton of the Central Coastal Area of California, 1954- 1960". California Cooperative Fisheries Investigations Progress Report 9, 1 July 1960 to 30 June 1962. 1962. 4. Bolin, Rolf L. and collaborators. "Hydrographic Data from the Area of the Monterey Submarine Canyon, 1951-1955". Final Report Hopkins Marine Station, Stanford University, Pacific Grove, California. July 30, 1964. 5. California Cooperative Oceanic Fisheries Investigations, Atlas Number 1, CALCOFI Atlas of 10-Meter Temperatures and Salinities, State of California, Department of Fish and Game, Marine Research Committee, July 1963. 6. Clarke, George L. , Gifford C. Ewing, and Carl J. Lorenzen. "Spectra of Backscattered Light from the Sea obtained from Aircraft as a Measure of Chlorophyll Concentration". Science 167 (3921), 1119-1121, February 20, 1970. 7. Duntley, Seibert Q., "Light in the Sea". Journal of the Optical Society of America 53(2), 214-233, February 1963. 8. Gordon, Howard R. , Institute of Marine and Atmospheric Sciences, University of Miami, Miami, Florida. Personal communication. August 4, 1970. 9. Jerlov, N. G. , Optical Oceanography, Elsevier Publishing Company, Amsterdam, London, New York, 1968, 194 p. 10. Joseph, J., "Extinction Measurements to Indicate Distribution and Transport of Water Masses". Proceedings of UNESCO Symposium on Physical Oceanography, Tokyo, 59-7 5, 1955. 11. Labyak, P. S., An Oceanographic Survey of the Coastal Waters Between San Francisco Bav and Monterey Bay, M.S. Thesis, Naval Postgraduate School, 1969, 317 p. 12. Manheim, F. T. and R. H. Meade, "Suspended Matter in Surface Waters of the Atlantic Continental Margin from Cape Cod to the Florida Keys". Science 167 (3917), 371-376, January 23, 1970. 208 13. Margalef, R., "Some Concepts Relative to the Organization of Plankton" Annual Review of Oceanography and Marine Biology, Harold Barnes (Editor), Vol. 5, 257-289, 1967. 14. Pak, Hasong, George F. Beardsley, Jr., and Robert L. Smith, "An Optical and Hydrographic Study of a Temperature Inversion off Oregon during Upwelling". Journal of Geophysical Research 75 (3), 629-636, January 20, 1970. 15. Park, Kilho, June G. Pattullo, and Bruce Wyatt, "Chemical Properties as Indicators of Upwelling Along the Oregon Coast". Limnology and Oceanography 7 (3)', 435-437, July 1962. 16. Pytkowicz , Ricardo, "Oxygen Exchange Rates off the Oregon Coast". Deep Sea Research 11 (3), 381-389, 1964. 17. Ramsey, Richard C., "Study of the Remote Measurement of Ocean Color, Final Report". TRW Systems Group, Reporting Period 28 August 1967 to 28 January 1968. Contract No. NASW-1658. Prepared for NASA Headquarters, Washington, D. C, January 26, 1968. 97 p. 18. Reid, Joseph L. , Jr., Gunnar I. Roden, and John Wyllie, "Studies of the California Current System". California Cooperative Oceanic Fisheries Investigations Progress Report, 1 July 1956 to 1 January 1958, 1958. 19. Ryther, J. H., "Photosynthesis and Fish Production in the Sea". Science 166 (3901), 72-76, October 3, 1969. 20. Skogsberg, Tage , "Hydrography of Monterey Bay, California. Thermal Conditions, 1929-1933". Transactions of the American Philosophical Society , New Series, Vol. 29, December 1936. 21. Smith, R. L. , "Upwelling". Annual Review of Oceanography and Marine Biology, Harold Barnes (Editor), Vol. 6, 11-46, 1968. 22. Stefansson, Unnsteinn and Francis A. Richards, "Distribution of Dissolved Oxygen, Density and Nutrients off the Washington and Oregon Coasts". Deep Sea Research 11 (3), 355-380, 1964. 23. Sverdrup, H. U. , Martin W. Johnson, and Richard H. Fleming, The Oceans , Prentice Hall, Englewood, New Jersey, 1942. 1087 p. 24. Yentsch, Charles S. and Carol A. Reichert, "The Interrelationships between Water Soluable Yellow Substances and Ch loroplastic Pigments in Marine Algae". Bontanica Marina 3_ (1), 65-74, Cram de Gruyter and Co., Hamburg, August 1961. 25. Yentsch, C. S. and R. F. Scagel, "Duirnal Study of Phytoplankton Pigments an _in situ study in East Sound, Washington". Journal of Marine Research 17, 567-583, 1958. 26. Yeske, A. W. and R. D. Waer , The Correlation of Oceanic Parameters with Light Attenuation in Monterey Bay, California, M.S. Thesis, Naval Postgraduate School, 1968. 144 p. 209 INITIAL DISTRIBUTION LIST No. Copies 1. Defense Documentation Center 2 Cameron Station Alexandria, Virginia 22314 2. Library, Code 0212 2 Naval Postgraduate School Monterey, California 93940 3. Department of Oceanography . 3 Naval Postgraduate School Monterey, California 93940 4. Officer in Charge 1 Fleet Numerical Weather Facility Naval Postgraduate School Monterey, California 93940 5. Commanding Officer and Director 1 Naval Undersea Research & Development Center Attn: Code 2230 San Diego, California 92152 6. Director, Naval Research Laboratory 1 Attn: Tech. Services Info. Officer Washington, D. C. 20390 7. Office of Naval Research 1 Department of the Navy Washington, D. C. 20360 8. Department of Commerce, ESSA 2 Weather Bureau Washington, D. C. 20235 9. Oceanographer of the Navy 1 The Madison Building 732 N. 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Army Engineering Division, South Pacific 630 Sansome Street San Francisco, California 94111 215 67. Professor Glenn H. Jung Department of Oceanography Naval Postgraduate School Monterey, California 93940 68. LT Arthur B. Shepard USCGC Burton Island WAGB-233 P.O. Box 20820 Long Beach, California 90801 216 Security Classification DOCUMENT CONTROL DATA -R&D ■ Security clas si hcation ol title, bodv of abstract and indexing annotation mu.sf be entered when the overall report is classified) 1 ORIGINATING activity (Corporate author) Naval Postgraduate School Monterey, California 93940 Za. REPORT SECURITY CLASSIFICATION Unclassified 2b. GROUP 3 REPOR T TITLE A Comparison of Oceanic Parameters During Upwelling off the Central Coast of California DESCRIPTIVE NOTES fTVpe ol report and.inclusive dates) Master's Thesis; September 1970 5 AUTHORiSi (First name, middle initial, last name) Arthur Bishop Shepard 6 REPORT DATE September 1970 7«. TOTAL NO. OF PAGES 217 7b. NO OF REFS 26 8«. CONTRACT OR GRANT NO. b. PROJEC T NO 9a. ORIGINATOR'S REPORT NUMBER(S) 9b. OTHER REPORT NOISI (Any other numbers that mr.y be assigned this report) 10 DISTRIBUTION STATEMENT This document has been approved for public release and sale its distribution is unlimited. 11. SUPPLEMENTARY NOTES 12. SPONSORING MILITARY ACTIVITY Naval Postgraduate School Monterey, California 93940 13 ABSTRACT An examination of the region between Monterey Bay and San Francisco Bay, California was conducted from 29 April to 5 May 1970 to study the effects of up- welling on the Central Calif ornia, coastal region. Six parameters: temperature, phosphate, beam transmission for light, chlorophyll a, Coulter particle size distributions, and oxygen were observed at eighty-five stations from the surface to 100 m in the cruise area. The data gathered are presented in the form of horizontal contours and profiles which indicate: (1) Almost the entire surface layer was satu- rated with respect to oxygen. (2) There were four areas, at the northern and southern ends of Monterey Bay, off Point Montara, and west of the entrance to San Francisco Bay, which exhibited high values of chlorophyll a, oxygen, and particle count, for correspondingly low phosphate values and low beam transmission. (3) These productive areas are inshore, generally within 5-10 miles of the coast. (4) A peak in the size distribution of particles was evident in the productive surface layers, within the observable range of particle diameters (1.59 to 32.0 u) . (5) Ug-at/1 P04 Plots of oxygen versus phosphate showed that similar slopes of about -3.1 _ — _ — were observed for inshore and offshore regions. The inshore regions exhibited higher phosphate values for a given value of oxygen which is probably a result of upwelling. (6) There was a fair correlation between beam transmittance and particle count. High values of beam transmittance were generally associated with low total Coulter count, e.g., 90$/m and 6000 counts per 2 ml. Conversely, low values of beam transmittance were associated with high particle counts, for example 5;-/m and 85,000 counts per 2 ml. FORM I MOV t! ;/n oioi 1473 807-681 1 (PAGE 1 ) Security Classification 217 A-31406 Xtvttrit\ ClH**ifu-otton KIV WO R D * beam transmission central California coast chlorophyll a_ Coulter counter hydrological optics light attenuation light transmissivity Monterey Bay, California oceanographic survey optical properties of sea water oxygen in sea water particulate matter particle size distribution phosphate sound velocity suspended material temperature turbidity upwelling LINK A ^&sasfeffi& D .F°l"..1473 "»*« 0101 -807-8821 218 Security Clacsifictiion A- 3 I 409 ,IOCT '* 2 25 m1 123485 Shepard^nar\son of during up^ of tne central ^ Car»forn»a. CT7 4 227 5 i* 2^ Thesis 123485 S4427 Shepard c.i A comparison of oceanic parameters during upwell ing off the central coast of Cal ifornia. thesS4427 A comparison of oceanic i 3 2768 001 95402 7 DUDLEY KNOX LIBRARY