dissolved nitrogen values obtained from the gas chromatograph were 

 within the acceptable range. Eighty-seven sample pairs were compared, 

 and the mean difference was found to be 0.36 ml/liter or approximately 

 5% of the dissolved oxygen content of the samples («6-9 ml/liter). 

 Winkler oxygen results for stations 15, 25, and 30 were used for 

 analysis in this report because they were considered more reliable 

 than the gas chromatographic results. 



Micronutrient samples were collected in polyethylene bottles, 

 frozen, and shipped to NAV0CEAN0 for analysis. Concentrations were 

 determined colorimetrically using a Beckman DU spectrophotometer 

 according to the methods of Mullin and Riley (1955) for nitrates, 

 Murphy and Riley (1962) for reactive phosphorus, and Strickland and 

 Parsons (1960) for reactive silicates. Strickland and Parsons (1960) 

 estimate the precision of the above methods, but it is difficult 

 to say whether these limits can be applied to the 1964 EDISTO samples 

 since duplicate determinations were not run and because it is impossible 

 to reconstruct the storage history of the samples. When constructing 

 the micronutrient cross sections, it appeared that the nitrate values 

 were the least reliable suite of micronutrient data. 



A Beckman Model 76 Expanded Scale pH Meter was used to perform 

 pH determinations aboard ship according to the method of Strickland 

 and Parsons (1960) . 



Except for the dissolved nitrogen values, all of the data mentioned 

 above were evaluated and forwarded to the National Oceanographic 

 Data Center where they were computer processed to obtain calculated 

 properties such as sound velocities and where they are filed under 

 cruise reference number 31688. Dissolved oxygen percent saturations 

 and apparent oxygen utilizations were computer determined at NAV0CEAN0. 

 In performing these calculations it was assumed that the oxygen solubility 

 data of Carpenter (1966) were the most correct. These data and the 

 dissolved nitrogen data are filed at NAVOCEANO. 



In addition to Nansen cast station data, 36 bottom sediment samples 

 were taken: 3 Kullenberg gravity cores, 32 Phleger cores, and 1 

 grab sample. These samples were forwarded to NAVOCEANO for analysis 

 and are on file in the geological laboratory under item number 275. 



Bathymetric data were obtained with an Alden 418 Precision Graphic 

 Recorder and are on file at NAVOCEANO. 



III. DESCRIPTION OF THE SURVEY REGION 



1. Bathymetry. 



Bathymetry of the northern Greenland Sea is complex. Bordering 



shelves of Greenland and Svalbard are deeper than average, and available 



data indicate that their topography is quite irregular. Glacial 

 troughs appear to be common on both shelves. Canyons do not commonly 



