Acoustic Source Levels of Four Species of Small Whales

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.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1976
Accession Number
ADA037620

Entities

People

  • Charles W. Turl
  • James F. Fish

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Detection
  • Acoustics
  • Ambient Noise
  • Animals
  • Bandwidth
  • Broadband
  • Cells
  • Detection
  • Frequency
  • Frequency Bands
  • Mammals
  • Marine Mammals
  • Measurement
  • Odontocetes
  • Porpoises
  • Recording Systems
  • Sound Pressure

Fields of Study

  • Environmental science

Readers

  • Acoustics.
  • Marine Mammal Biology