f , 



Salinities were determined using an inductively coupled salino- 

 meter. Dissolved oxygen samples were analyzed using the NA.VOCEANO 

 modification of the S-winnerton-Linnenbom-Cheek gas chromatographic 

 method. A total of 324 titrations were run for evaluation of the 

 gas chromatographic equipment using the Thompson and Robinson modifi- 

 cation of the Winkler method for dissolved oxygen determination. 

 Inorganic soluble phosphate was determined by the Strickland and 

 Parsons spectrophotcmetric method and pH was determined using an 

 expanded scale pH meter. A Helige turbidimeter was employed for 

 determining turbidity. All analyses were conducted aboard ship. 



Frozen samples were collected at every bottle depth on 74 casts 

 for nitrate and silicate analyses in the NAVOCEAWO laboratory. Forty- 

 eight samples of sea water also were collected on four stations for 

 deuterium analysis at the Woods Hole Oceanographlc Institute. 



Fifty-five bottom sediment samples were collected, 35 of which 

 were gravity cores and 20 of which were orange peel grabs. The 

 gravity cores were taken using a six foot long, two inch diameter 

 coring device with 200 pounds of weight attached. Grab samples were 

 obtained using an orange peel grab with a canvas covering to minimize 

 sampling washing. 



An additional current station of 25 hours duration also was 

 occupied in Bering Straits while enroute to the survey area. While 

 on this station a time series suite of six Hansen casts was accomplished. 



Survey accomplishments are tabulated in Table 1. Station 

 locations are depicted on Figxires 1 and 2. 



