partitioner equipped with a Texas Instruments integrating recorder 

 was used. All dissolved oxygen samples were run immediately upon 

 being drawn. This was done in an attempt to minimize changes in 

 oxygen tension owing to sample temperature elevation. 



3. pH Determination . pH determinations were made using a Beckman 

 model 76 expanded scale pH meter. Water samples were placed in a 

 temperature bath and allowed to come to room temperature before analysis. 



4. Dissolved Inorganic Phosphate Determination . Dissolved inorganic 

 phosphate determinations were made using the ascorbic acid reduction 

 method of Murphy and Riley (1962) . A Beckman model DU spectrophotometer 

 with a 10-centimeter path length cell was used for these analyses. 



The excessive amount of particulate matter encountered in the water 

 made it necessary to run turbidity blanks for each sample. 



5. Turbidity Determination . Sea water turbidity was measured 

 for the Naval Research Laboratory aboard BURTON ISLAND using a Helige 

 model 800 turbidimeter. Samples were placed in a temperature bath, 

 allowed to come to room temperature, and then manually shaken before 

 measurements were made. Care was taken to eliminate errors introduced 

 by bubble formation in the sample. 



C. Disposition of Data. 



The Nansen cast data were forwarded to the National Oceanographic 

 Data Center (NODC) for computer processing. NODC reference numbers 

 assigned were 31188. for NORTHWIND and 31428 for BURTON ISLAND. IBM 

 7070 computations provided temperature, salinity, and dissolved oxygen 

 interpolations at standard depths in addition to sigma-t, specific 

 volume and dynamic depth anomalies, and sound velocity calculations 

 from the observed data. 



Turbidity data collected in 1964 were turned over to the Naval 

 Research Laboratory for reduction and analyses. 



Temperature, salinity, dissolved oxygen, inorganic phosphate, 

 reactive silicate, and nitrate data collected on both cruises have 

 been used in an M.S. thesis for the University of Washington by Louis 

 A. Codispoti. 



D. Units of Measurement. 



Oceanographic parameters are reported in the English or metric 

 units of measurement normal to the measuring instrument. For convenience, 

 tables of equivalents are presented in appendix A for converting 

 values from one system to the other. 



