Aleutian Deep, 152 



Antarctic circumpolar current, 105 



oxygen content, 105 

 Antarctic intermediate current, 112 



North Atlantic, 84, 85, 86 

 Antarctic intermediate water. South 

 Pacific, 94, 95 



origin, 102 



oxygen content, 102 



salinity and temperature, 94, 95 

 Arctic intermediate current, 112 

 Arctic intermediate water 



origin, 102 



oxygen content, 102 



temperature and salinity, 97,98,991 

 Armauer Hansen . 86 

 Atlantic Drift, 87 

 Ault Peak, 149, 151, 152 

 Azores Plateau, 150 



Bauer Deep, 149, 150, 152 

 Bottom samples 

 collection, 79 



snapper-type sampler, 79 



illustrated, 80 

 tube sampler, 79 

 illustrated, 80 

 preservation, 79 

 Bottom temperature (see Temperature) 

 British Admiralty tables, 51, 61 

 Bushnell. 77 



California Current, 109 



velocity, 113 

 Carnegie Ridge, 152 

 Challenger . 85, 86, 88, 89 

 Chaucer Bank, 150 

 Conductivity method of measuring sa- 

 linity, 67 

 Convection layer 



changes in thicknesr across the 

 equator, 96 



increase in thickness toward the 

 west. Pacific, 95 

 Currents (see also geological names) 



computation, 106 



relation to prevailing winds, 107 



Dana . 77, 84, 85, 86 

 Deep water 



of Pacific, 93 

 origin. North Atlantic, 84 

 Pacific Basin, 89 

 origin, 104 

 oxygen content, 104 

 table, 104 

 Pacific, temperature and salinity, 

 102 



table, 103 

 Peruvian Basin, temperature, 94 

 Peruvian Sea, 85 

 potential North Atlantic, tempera- 

 ture, 86 

 potential Pacific, 104 



table, 104 

 salinity 



Pacific, 77 

 North Atlantic, 77, 85 

 temperature, 85 

 sounding velocity, observations, 61 

 Deep-water circulation 

 Atlantic, 105 

 Pacific, 106, 113 

 Density distribution 

 Pacific, 100 

 maintained by prevailing winds, 107 



INDEX 



Depth 



by thermometers compared with 



wire length, 12 

 comparison of depth by thermome- 

 ter, wire, and sonic methods, 

 55-58 

 determined thermometrically, 11, 12 



accuracy, 14 

 of sampling, 15 

 accuracy, 16 

 ratio between depth and wire length, 



15 

 ratio between depth to bottom and 



wire length, 47 

 ratio of true depth to intermediate 

 sonic, 58 

 Depth finding equipment, sonic, 51 

 Discovery U, 104, 105 

 Dolphin Plateau, 150 



East Atlantic Depression, 150 

 Easter Island Rise, 150, 151 

 Equatorial Countercurrent, 109, 110, 



111 

 oxygen content. 111, 112 

 velocity, 113 

 Equatorial currents (see North and 



South Pacific tropical currents) 

 Evaporation, importance to surface 



temperature and salinity, 94 



f 



Fleming Deep, 149,152 

 Flying Venus Reef, 152 



Grand Banks of Newfoundland, 84, 150 

 Gulf of Alaska, current, 109 



velocity, 113 

 Gulf Stream, 61,87 



Hayes Peak, 149, 152 

 Humboldt Current (see Peruvian Cur- 

 rent) 



Intermediate subpolar currents, Pa- 

 cific, 88 

 Intermediate water of Pacific, 93 

 Isobaric surfaces 



profiles across Equatorial Counter- 

 current, 105 

 profiles in North Atlantic, 87 



illustrated, 121 

 topographies in Pacific, 106 



Japan Current, 61 



Kamchatka Trench, 152 

 Kurile Current, 109 



velocity, 113 

 Kuroshio Current, 109 



Labrador Current, 87 



Marion . 149, 150 

 Maud, 6 



Merriam Ridge, 14a, 150, 152 

 Meteor . 5, 6, 12, 79, 105 

 Michael Sars . 83, 84, 86 

 Middle Atlantic Rise, 150 

 Milne -Edwards Trench, 150 

 Monaco base maps, 149, 150, 152 

 Moseley Deep, 150 

 Murray Deep, 151 



155 



Nero . 149 



Nero Deep, 149, 151 



North Atlantic trade-v/ind drift, 87 



North Pacific Basin, 151 



North Pacific easterly current, 109 



velocity, 113 

 North Pacific tropical current, 108, 109 



velocity, 113 



Oxygen content 



Antarctic circumpolar current, 105 

 Antarctic intermediate water, 102 

 Arctic intermediate water, 102 

 Equatorial Countercurrent, 111, 112 

 Pacific Basin, 104 

 table, 104 



Oyashio Current (see Kurile Current) 



Pacific Basin (see Deep water) 

 Peruvian Basin, temperature of deep 



water, 94 

 Peruvian Current, 108 



velocity, 112 

 Peruvian Sea, deep water, 85 

 Phosphate content near Galapagos 



Island, 108 

 Planet, 88, 89, 98 



Ramapo, 152 



Salinity 



accuracy of values, 77 



Antarctic intermediate water. South 



Pacific, S4, 95 

 Arctic intermediate water, 97, 98, 99 

 Atlantic deep water, 77 

 effect of temperature, 72, 73 

 evaporation, importance to surface, 



94 

 importance of upwelling, 94 

 measurement, 67 

 accuracy, 73 

 conductivity method, 67 

 corrections, 71 

 silver nitrate method, 67 

 Pacific deep water, 77 

 preservation of samples for meas- 

 urement, 71 

 relation between slide -wire readings 

 and, 67 

 Salinity bridge, titration comparisons 

 used in calibration, 67, 68-70 

 Salinity distribution, horizontal 

 Pacific, 88 



illustrated, 123 

 sea surface, Pacific, 91 

 subsurface levels, Pacific, 91-93 

 Salinity distribution, vertical. Pacific, 



93-100 

 Samplers (see Bottom samples) 

 Sargasso Sea, 87 

 Silver nitrate method of measuring 



salinity, 67 

 Sonic depth, 51-54 (see Soundings also) 

 determination, 51 

 accuracy, 51, 52 

 basic velocity, 52 

 correction factors, 51-52 

 table, 52 



British Admiralty tables, 51 

 Sonic depth finding equipment, 51 

 Sounding 



accuracy, 62 



bottom profiles determined by, 149 



by shotgun method, 54, 57 



