SUBJECT INDEX 



561 



Salinity, temperature and depth (STD) 



recorder, 114 

 Saline-meters, 113 

 Salts (see also Nutrient salts) 



total dissolved, 116 

 Sampling (see also Water sampling) 



methods, 418, 424 



nets, disadvantages of, 497 



sets of samples, 422 

 Santa Barbara Basin, 53 

 Santa Monica Basin, 53 

 Sargasso Sea, 132 ff 



B 12 in, 210 



compensation depth, 349 



maximum mixing in winter, 159 



O2 experiments with surface water, 141 



photic layer, depth of, 156 



photosynthesis-light intensity curves of 

 phytoplankton, 153 



productivity measurements, 359 

 Savannah River estuary, 311 

 Scendestnus, CO2/O2 exchange factor, 139 

 Scorsby Sound, phytoplankton investiga- 

 tions, 365 

 Seasonal changes in sea-level, 485 



Arctic Ocean tide gauges, 489 



causes and factors influencing, 486, 491 ff 



deviations from annual mean, 487, 491 



history of the study of variations, 485 



International Association of Physical 

 Oceanography (IAPO) committee, 

 485 ff, 495, 496 



isostasy, 492, 495 



Northern and Southern Hemispheres, 

 487 ff 



observed seasonal variations, 485 



regional effects, 495 



steric level changes, 486, 492 



summary by areas of world, 494 



world's largest variations, 487 



zones in Atlantic and Pacific Oceans, 486 

 Sea surface 



oxygen exchange across, 53 



regional slopes, causes and characteristics 

 of, 337 ff 



regional slopes cine to synoptic influences, 

 338 



time variations of regional slopes, 344 ff 

 Sea-water, Composition of, 3 (.see also under 

 Elements ) 



biological analysis, 170 ff, 198 ft' 



B12 cycle in, 204 



calcium contents, 23 



chelators affecting fertility, 201 



Sea- water — continued 



chemical analysis data, 171 ff 



chemical reactions and end-products, 

 14 ff 



constant relative composition, 110 



Copenhagen Standard, 112, 115 



enrichment of biological assays, 200 ff 



fertility-limiting factors, 200 ff 



geochemical parameters, 4 ff 



ionium, removal from, 21 



ion-pair formation, 6 



isotopic compositions, 8 (see also under 

 Isotopes) 



microconstituents, 220 



nitrogen, quantities in, 172 



nutrient content changed by biological 

 activity, 30 



nutrient elements, availability of, 39 



organic carbon dissolved in, 171 



organic compounds, identification in, 

 166 ff, 221 



organic content distinguishing water- 

 masses, 229 



organic matter dissolved in, 172 



organisms, influence of, on the composi- 

 tion of sea-water, 26 



oxidation of organic matter in, 32 



phosphorites in, 14 



Primary Standard, 112 



properties and their measurement, 

 HOff 



properties interrelated, 111 



radiochemical analysis, 80 



radium diffusion in, 21 



tagging and tracer techniques, 118 ft 



trace elements limiting fertility, 200 



trace substances, bioassay of, 220 



"Urnormal 1937", 112 



vertical exchange under steady-state 

 conditions, 50 ff 



vitamin B12, routine assays, 222 

 Seaweeds 



antibiotics produced by, 183 



plant hormones needed, 197 



vitamin B12 content, 184 ff 



vitamins in, 181 ff 

 Secondary production of organisms, 129 

 Sediments: see Pelagic 

 Serratin marinorubra, 225, 22 S 

 Silicon 



biochemical cycle, 48 ff 



circulation studies using 32 Si, 88 ff 

 Silk nets, erroneous results for amount of 

 plankton, 135 



