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 Seasonal Distribution-— ------------------ 89 



Winter--------------------------- — -• — 89 



Summer------------------ — ------------- 117 



WATER SALINITY AND NUTRIENTS— — — — — — — — — — 140 



Met hods-- ------------------------------- ------ 140 



Equipment--------------------------- —- 143 



Additional Sources of Salinity Data------ — ■ — 143 



Salinity Data of Shelf Water—— -■ 143 



Vertical Variation--------------- ■ — — 143 



Dilution from Salinity Data------------------ — 148 



Effect of Diffusers on Dilution—— — - 148 



Extent of Sewage Field — >——————. 150 



Nutrients------------------------------------- 150 



Conditions at the Hyperion Outfall-- — ----- 153 



TRANSPARENCY— — — — — — -- — — — - — — 156 



Met hods------ --------------------- ------------ 156 



Transparency in Santa Monica Bay-------------- 158 



Compliance with State Standards-- — — — 162 

 The Relative Merits of Transparency Instrumentsl64 

 Comparison of Hydrophotometer and Secchi 

 Disc Readings-------------------- — •— — 165 



THE CIRCULATION OF SANTA MONICA BAY————— — — 169 



Statement of the Problem— ———-—-■ — — 169 



Current Meter Observations-------------------- 171 



Drogues- ,--------....-..—.———..—-.-— 173 



Drift Card Results——- — ——---———— 175 



Introduction----— ----------------------- 175 



Explanation of Drift Cards--— ---------- 181 



Cruise of September 8, 1955—— — -— 183 

 Cruise of September 29, 1955—— ———— 186 



Cruise of December 29, 1955———— 194 



Cruise of January 18, 1956----=-------—-- 196 



Cruise of February 16, 1956—- ——— 198 

 Cruise of February 22, 1956—----——— 198 



Cruise of March 28, 1956—————--— 202 



Cruise of April 25, 1956— ——— — — 204 



Cruise of May 23=24, 1956——--——— 212 

 Cruise of June 19, 1956— — — — — — 215 



Cruise of June 29, 1956— — — = - ———— 219 



Cruise of July 26-27, 1956——— 219 

 Cruise of August 9-10, 1956— — — — 221 



Cruise of August 20-21, 1956- — — — ---- — - 228 



Drift Card Results from Sludge and Effluent 

 Outfall Stations————— — ————— — — 228 



Eddy Diffusion———— — — — — — 247 



Discussion and Conclusions--- ---------------- 250 



Surface Film— ----—=————— ———— — — 251 



Surface Currents— —————— — - 252 



Deeper Currents—---—--—-------——---— 256 



SUMMARY------— — — - ——— ——— 257 



Water Temperature—————————— ———— 259 



Water Masses and Units— — — — — ————— 260 



Temperature and the Rising Effluent----------- 261 



Water Temperature and Related Motion--------- 262 



