Security Classification 



DOCUMENT CONTROL DATA - R&D 



ot title, body of abstract and indexing annotation must be entered when the 



26 GROUP 



1. ORIGINATING ACTIVITY (Corporate author) 



U. S. Naval Oceanographic Office 

 Oceanographic Surveys Department 

 Ocean Surveys Division 



3- REPORT TITLE 



OPERATIONS DEEP FREEZE 63 AND 64, SUMMER OCEANOGRAPHIC FEATURES OF THE ROSS SEA 



. REPORT SECURITY CLASSIFICATION 



Unclassified 



4. DESCRIPTIVE NOTES (Type of report and inclusive dates) 



Final February 1963 - March 1964 



5- AUTHORS (Last name, first name, initial) 



Ocean Surveys Division: Countryman, Kenneth A. 



Gsell, William L. 



6- REPO RT DATE 



June 1966 



8a. CONTRACT OR GRANT NO. 



GA-153 



b. PROJECT NO. 7T_T_ 



01 

 GE 



AMC 



7a. TOTAL NO. OF PAGES 



193 



7b. NO. OF REFS 



9a. ORIGINATOR'S REPORT NUMBERfSj 



TR-190 



9b. OTHER REPORT N O(S) (A ny other numbers that may be assigned 

 this report) 



None 



10. AVAILABILITY/LIMITATION NOTICES 



Qualified requesters may obtain copies of this report from DCD, 



11. SUPPLEMENTARY NOTES 



12. SPONSORING MILITARY ACTIVITY 



National Science Foundation 



1800 G St., N. W. , Wash. D. C. , 20550 



13. ABSTRACT 



Results of oceanographic research during the U.S. Navy operations in support 



3f DEEP FREEZE 63 and 64, 1962-63 and 1963-64, are presented. Oceanographic observa- 

 tions were conducted aboard USS EDIST0 (AGB-2) during DEEP FREEZE 63 and USS ATKA 

 (AGB-3) during DEEP FREEZE 64. Emphasis was focused on the distribution of water 

 masses in the Ross Sea and the identifying physical characteristics of each type. 



NAV0CEAN0 personnel obtained data at 122 stations during DF-63 and at 79 stas. 

 during DF-64. Included in these totals are 23 annual ice forecasting stations which 

 were reoccupied both years along the Victoria Land coast and in McMurdo Sound to deter- 

 mine sea ice potential by the heat budget reversal. The stations occupied on DF-63 

 were in the western half of the Ross Sea and most of those occupied on DF-64 were in 

 the eastern half. 



Station data include vertical distribution of observed temperatures, salinities, 

 dissolved oxygens, and phosphate-phosphorus and machine computed densities, specific 

 volume anomalies, dynamic height anomalies, and sound velocities. Selected cross- 

 section profiles of observed physical and chemical properties are presented to illus- 

 trate the water masses in the Ross Sea. 



Water types are defined and discussed. From the data presented, it is evident 

 that warmer water from oceanic depths moves in over the continental shelf and is forcfed 

 to the surface causing the central Ross Sea to become ice free earlier than surround- 

 ing areas. Additionally, there is evidence of the formation of colder, more dense, 

 Shelf Water during the austral winter which acts as a barrier to this warmer water 

 intrusion into the south-southwestern extremities of the sea. 



DD 



1 JAN 64 



1473 



