Accession Number:

ADA037620

Title:

Acoustic Source Levels of Four Species of Small Whales

Descriptive Note:

Research and development rept. 1974-1975

Corporate Author:

NAVAL UNDERSEA CENTER SAN DIEGO CA

Personal Author(s):

Report Date:

1976-12-01

Pagination or Media Count:

21.0

Abstract:

Absolute sound pressure level measurements were made at sea on herds of four species of marine delphinids the common dolphin, Delphinus delphis the pilot whale, Globicephala macrorhynchus the bottlenose dolphin, Tursiops truncatus and the northern right whale dolphin, Lissodelphis borealis. Average source levels were similar for Delphinus, Globicephala, and Lissodelphis 145-160 dB re 1 micropascal per 120 Hz band. Peak levels varied from 170 to 180 DB for the four species, being the highest for Globicephala.

Subject Categories:

  • Biological Oceanography
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE