ILLUSTRATIONS (cont'd) 



FIGURE Page 



Hugh M. Smith cruise 27 (cont'd) 



69 - 73. Vertical section of sigma-t 65 



74. Surface sigma-t. 68 



75- 77. Depth of the 25. 2, 26.0, and 26. 8 sigma-t surfaces 69 



78 - 82. Vertical sections of salinity. 72 



83. Surface salinity. 75 



84 - 86. Salinity on surfaces of constant sigma-t. 76 



87 - 91. Vertical sections of dissolved oxygen. 79 



92 - 94. Dissolved oxygen on surfaces of constant sigma-t. 82 



95 - 99. Vertical sections of inorganic phosphate. 85 



100. Surface inorganic phosphate. 88 



101 - 102. Inorganic phosphate on surfaces of constant sigma-t. 89 



103 - 104. Normal and 1955 mean monthly positions of the Aleutian Low and Eastern North 

 Pacific High and of the northeast trades and westerlies and tracks of the 



centers of the low pressure areas for January and February 1955 91 



Hugh M. Smith cruise 30 (NORPAC) 



105. Stations and BT positions. 93 



106 - 109. Smoothed geopotential anomaly of the isobaric surfaces relative to the 1, 000- 



decibar surface. 94 



110 - 113. Zonal components of the geostrophic currents. 98 



114 - 118. Anomaly of the geopotential topography relative to the 1, 000-decibar surface of 



the 0-, 100-, 200-, 400-, and 600-decibar surfaces 102 



119. Surface temperatures. 107 



120 - 123. Vertical sections of thermosteric anomaly 108 



124. Surface thermosteric anomaly 112 



125 - 127. Depth of the 277. 2 (25. 2 sigma-t), 201.7 (26. sigma-t), 125. 5 (26. 8 sigma-t) 



thermosteric anomaly surfaces. 113 



128 - 131. Vertical sections of salinity. 116 



132. Surface salinity 1^0 



133 - 135. Salinity on surfaces of constant thermosteric anomaly 121 



136 - 139. Vertical sections of dissolved oxygen. 124 



