last of these, number 8793, was completed shortly 

 before midnight on 4 August. Evergreen then pro- 

 ceeded to Boston, Mass., arriving on 13 August. 



To obtain an adequate cross-section of the cur- 

 rent structure across Smith Sound, 10 Richardson - 

 type current meters were suspended from 3 tor- 

 oidal type buoys at the positions indicated by the 

 triangles in figure 1. Bathythermographs were 

 taken at all stations (figs. 26 through 31 inclusive 

 are the corrected bathythermograph traces for the 

 entire survey), and bottom samples were collected 

 at eight stations with a modified Phleger corer and 

 a "Van "Veen sampler. In addition, 417 dissolved 

 oxygen determinations were made for selected 

 depths at all stations. Also, 654 samples were col- 

 lected for all depths at all stations and frozen in 

 8-ounce polyethylene bottles for the determination 

 of inorganic phosphate, total phosphorus, nitrate, 

 nitrite, and silicate content by the Woods Hole 

 Oceanographic Institution. 



A special effort was made to collect as much 

 accurate bathymetric data as possible since most 

 of soundings marked on the charts appeared to 

 be inaccurate or poorly positioned. Icebergs 

 abounded in numbers too great to count the ma- 

 jority of the time with the heaviest concentrations 

 occurring in the vicinity of Cape York and Melville 

 Bay, but they did not hinder operations at any 

 time. Pack ice prevented Evergreen from get- 

 ting as close to shore as desired on the transverse 

 sections. Fog occasionally obscured the shoreline 

 but was not of major concern and only 5 hours 

 of operating time was lost because of weather. 



The oceanographic work was under the super- 

 vision of oceanographer Alfred P. Franceschetti, 

 USCGOU, assisted by LT R. M. O'Hagan, 

 TJSCGR and R. M. Snyder of the Woods Hole 

 Oceanographic Institution. Mr. Snyder was re- 

 sponsible for the preparation and mooring of the 

 toroidal buoys and Richardson-type current me- 

 ters. Other assistants in the observational work 

 and reduction of data included P. R. Flowers and 

 W. D. Eddowes, aerographers mates first class; 

 R. A. Lindsay, aerographer's mate second class; 

 H. J. W. Daugherty and J. R. Blackwell, aero- 

 grapher's mates third class. The Office of Naval 

 Research's Program was coordinated by D. C. Nutt 

 of Darthmouth College and L. K. Coachman of 

 the University of Washington. 



Temperature and salinity observations were 

 made at each station with the observations ex- 

 tending from the surface to as near bottom as was 



practicable utilizing NODC standard depths as 

 a guide. Temperatures were measured with paired 

 protected deep-sea reversing thermometers. 

 Most were of Richter & Wiese manufacture but 

 some manufactured by GM Manufacturing Co. and 

 Kahl Scientific Instrument Corp. were also used. 

 A program of intercomparison of protected ther- 

 mometers was carried out in the field by rotating 

 one of each pair of thermometers periodically so 

 that a given thermometer eventually was paired 

 with a number of other thermometers. Only pro- 

 tected thermometers having a range of -2° C to 

 + 8° C were used and the standard deviation be- 

 tween the corrected readings was ±0.009° C. As 

 most of the observed temperatures listed in the 

 Table of Oceanographic Data are means of the 

 corrected readings of a pair of thermometers and 

 as many of the thermometers had recent ice- 

 point determinations, it is considered that the tabu- 

 lated observed temperatui-es are accurate within 

 ±0.01° C. 



Salinities were measured with the Wenner sa- 

 linity bridge with the exception of the surface 

 water samples from stations 8757 and 8758 which, 

 because of their low salinities, were measured on a 

 Hytech inductive salinometer. The Wenner 

 Bridge was standardized with sea water from an 

 oil-sealed carboy, and Copenhagen standard water 

 of batch P36 was measured as an unknown twice 

 during each 8-12-hour salinity run. At the end of 

 each survey, these measurements were used to cor- 

 rect the tentative value of the salinity and to de- 

 termine the corrections to the salinities for the en- 

 tire survey. All necessary corrections have been 

 applied to the tabulated values appearing in the 

 Table of Oceanographic Data. Temperature con- 

 trol of the samples in the electrolytic cells of the 

 Coast Guard's Wenner bridge limit the precision 

 of the individual measurements to ±0.00 5 °/ 00 . In 

 view of the precise chlorinity determinations it 

 produced in the critical evaluation of February 

 1960 (Soule, et al. 1960) and the check runs on the 

 calibration curve, it would appear that the salini- 

 ties measured with the Wenner bridge were meas- 

 ured with an accuracy of about ±0.01 °/ 00 . 



Dissolved oxygen determinations were conducted 

 according to the methods described by Jacobsen, 

 J. P., et al. (1950) ; and modified slightly by the 

 Woods Hole Oceanographic Institution. 2 Nan- 

 sen-type water bottles with teflon-coated interiors 



2 Personal communication from Dayton B. Carritt. 



