ASA 128th Meeting - Austin, Texas - 1994 Nov 28 .. Dec 02

2pAO5. Temporal and spatial distribution of whale calls off Monterey, California.

Khosrow Lashkari

Monterey Bay Aquarium Res. Inst., Pacific Grove, CA 93950

Twenty-seven hours of acoustic data were recorded from a horizontal array in deep waters off the central coast of California. These data were analyzed to determine the characteristics of diverse underwater acoustic sources. Some of the identified sources were: moored RAFOS sources at ranges of 150--1000 km, low-frequency ship and machinery noise, and sounds of biological origin. Over 400 whale calls were identified and analyzed to determine the distribution of these calls in both time and azimuth. Spectral analysis of the vocalizations indicate that most of the calls were from humpback whales. [Work supported by the United States Navy, Naval Postgraduate School, and Monterey Bay Aquarium Research Institute.]