6. Bottom Photography . Bottom photographs were taken using 

 an Edgerton, Germeshausen, and Grier (EG&G) stereo camera system 

 (Model 204 cameras, Model 214 light sources). A sonar pinger (EG&G 

 Model 220) attached to the camera frame was used to position the 

 array 3 to 5 meters off the bottom. 



7. Plankton . Vertical plankton hauls were made using a 1-meter 

 net. The maximum depth of a haul was determined by water depth, 

 scattering layer depth, and sea conditions. The samples were preserved 

 in an aqueous formaldehyde solution for later analysis at NAVOCEANO. 



8. Bathythermograph . A mechanical 900-foot bathythermograph 

 (BT) was used to obtain temperature versus depth profiles. 



B. Data Processing and Presentation. 



During survey operations, sound velocities were hand computed 

 from Nansen cast data using tables developed from Wayne D. Wilson's 

 equations of sound speed in sea water (NAVOCEANO, 1962) for comparison 

 with velocimeter data. The velocimeter system gave a punch tape 

 record of sound velocity, temperature, and depth. The tapes are 

 on file at NAVOCEANO. 



The Nansen cast data were checked, coded, and forwarded to the 

 National Oceanographic Data Center (NODC) for computer processing. 

 Machine listings provided temperature, salinity, dissolved oxygen, 

 density (sigma-t) , specific volume and dynamic depth anomalies, and 

 sound velocity at standard depths. Listings of the Nansen cast 

 data are on file at NODC under reference number 31935. 



The parachute current data are presented in tabular form in the 

 text under Currents. The film data records from the current meters 

 were computer processed by Geodyne Corporation and forwarded to NAVOCEANO 

 for analysis. A discussion and presentation of some of the current 

 meter data also are found in the text under Currents. 



The bottom sediment cores were analyzed at the NAVOCEANO geological 

 laboratory for engineering properties and sediment size and composition. 

 The grab samples were analyzed only for sediment size and composition. 

 Core analysis summary sheets are on file at NAVOCEANO under Laboratory 

 Item No. 277. 



Representative photographs from each camera lowering are presented 

 in the text under Bottom Photography. The film positives are on 

 file at NAVOCEANO. 



The plankton samples were sorted and identified at the NAVOCEANO 

 biological laboratory. Qualitative and relative abundance analyses 

 of the various plankters are presented in the text under Biological 

 Analysis. 



