Accession Number : AD0774124

Title :   Seasonal Variation of Underwater Noise in North-East Pacific,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT PACIFIC VICTORIA (BRITISH COLUMBIA)

Personal Author(s) : Scrimger,Joseph A.

Report Date : 20 DEC 1972

Pagination or Media Count : 3

Abstract : The author reports measurements of ambient noise over a one yr period made recently at three sites in the North-east Pacific. Remote instrument packages designed for a maximum water depth of 670 m, as previously used in relatively shallow Arctic waters, were placed near the summits of seamounts Bowie (summit depth about 40 m), Union (about 320 m) and Cobb (about 34 m). Acoustic measurements were limited to the frequency band 150 to 300 Hz. The data yield, although limited by equipment malfunction, was sufficient to reveal seasonal variations.

Descriptors :   *Ambient noise, *Pacific Ocean, Underwater sound, Seasonal variations, Canada

Subject Categories : Physical and Dynamic Oceanography
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE