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1. REPORT NUMBER 



2. GOVT ACCESSION NO 



3. RECIPIENT'S CATALOG NUMBER 



NOSC Technical Report 776 (TR 776) 



4, TITLE (end Subline) 



POSSIBLE EFFECTS OF NOISE FROM OFFSHORE OIL AND GAS 

 DRILLING ACTIVITIES ON MARINE MAMMALS: A SURVEY OF 

 THE LITERATURE 



5 TYPE OF REPORT & PERIOD COVERED 



Final: FY80 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORrs; 



C. W. Turl 



8. CONTRACT OR GRANT NUMBERfsJ 



9, PERFORMING ORGANIZATION NAME AND ADDRESS 



Naval Ocean Systems Center, Hawaii Laboratory 

 P.O. Box 997 

 Kailua, Hawaii 96734 



'0. PROGRAM ELEMENT, PROJECT, TASK 

 AREA ft WORK UNIT NUMBERS 



FGOVBLM0 513-MM25 



II- CONTROLLiNG OFFICE NAME AND ADDRESS 



Bureau of Land Management, New York Office 

 26 Federal Plaza 

 New York, NY 10007 



12, REPORT DATE 



January 1982 



13. NUMBER OF PAGES 



24 



M MONITORING AGENCY NAME ft ADDRESSr" dUferenl from Connolling Ofllce) 



15. SECURITY CLASS, (ot Ihle report) 



Unclassified 



16. DlS'TRIBUTION STATEMENT (ol this Report) 



Approved for public release; distribution unlimited. 



17, DISTRIBUTION STATEMENT (ol the mbslraci entered In Block 20. II dlllereni Irom Report) 



SUPPLEMENTARY NOTES 



9. KEY WORDS rComtnue on rove 



Behavior 

 Dolphins 



Marine Mammals 

 Offshore Drilling Activities 

 Offshore Drillin g Noise 



20 ABSTRACT ^Conl/nus 



ssary 'nd Identity by block number) 



Outer Continental Shelf 



Sea Lions 



Seals 



Sound Production 



Underwater Hearing 



Underwater Noise 

 Whales 



ery and tdentily by block number) 



The acoustic environment in the area of offshore oU and gas driUing activities may influence the behavior of 

 marine mammals. Increased noise levels may mask their acoustic signals. Offshore structures and the increased 

 level of human activities in outer continental shelf areas could displace marine mammals from traditional feeding 

 and breeding areas. No conclusions about the effects of noise on natural populations have been verified under 

 controlled conditions. 



DD 1 JAN 73 1473 EDITION OF 1 NOV fiS IS OBSOLETE 



S N 0102- LF- OU- 4601 



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