UNCLASSIFIED 



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REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



TR-272 



2. GOVT ACCESSION NO, 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE (and Subtitle) 



VARIATIONS IN THE THERMAL STRUCTURE AND WIND 

 FIELD OCCURRING IN THE WESTERN INDIAN OCEAN 

 DURING THE MONSOONS 



5. TYPE OF REPORT & PERIOD COVERED 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfs; 



John G. Bruce 



CONTRACT OR g^rfWT NUMBERfsJ 



WHO 



( D QCil M ENT 



PROGRAM tLEWfefJT.^ROJECT, XASJ< 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Naval Oceanographic Office (Code 9100^ 



NSTL Station 



Bay St. Louis, MS 39522 



AREA 4 WO^K U 



11. CONTROLLING OFFICE NAME AND ADDRESS 



REPORT DATE 



August 1981 



13. NUMBER OF PAGES 



U. MONITORING AGENCY NAME 4 ADDRESSC// d///oren( from Controlling Otlice) 



15. SECURITY CLASS, (ol thia report) 



UNCLASSIFIED 



DECLASSIFIC ATI ON/ DOWN GRADING 

 SCHEDULE 



16. DISTRIBUTION STATEMENT (ol this Report) 



Approved for public release; distribution unlimited. 



17. DISTRIBUTION STATEMENT (ol the abatracl entered In Block 30, II dlllerent trom Report) 



IB. SUPPLEMENTARY NOTES 



19. KEY WORDS (Contin 



reverae aide II neceaaary and Identity by block i 



:0. ABSTRACT (Continue on reverae aide II neceaaary and Identify by block number) 



The changes occurring in the temperature field in the Somali Basin and off 

 the Arabian coast have been monitored from October 1975 through December 1979 

 by a time series of temperature sections obtained along the tanker sea lane 

 offshore between 20S and 22°N. The development and decay of the large eddy 

 (up to roughly 600 km in diameter) in the northern Somali Basin and its smaller 

 associated eddies were observed each southwest monsoon. Strong horizontal 

 thermal gradients particularly in the upper 200 m occur at the eddy boundaries, 

 and currents in this region can attain velocities of up to 7 knots. (con'd; 



DD r:> 



1473 



EDITION OF 1 NOV 6S IS OBSOLETE 

 S/N 0102-014-6601 



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