Acoustical Scattering, Propagation, and Attenuation Caused by Two Abundant Pacific Schooling Species: Humboldt Squid and Hake

Abstract

Our long-term goal is to predict the acoustic characteristics expected from aggregations of hake and jumbo squid off the west coast of North America within the frequency range of tactical, low to midfrequency naval sonars. OBJECTIVES Our objectives are to: Measure the material properties of jumbo squid and hake Characterize the inhomogeneity of these properties and identify important scattering mechanisms Develop target strength models for both species as a function of frequency and depth Measure target strength of individuals of both species to validate models Measure in situ the spatial and temporal distributions of squid and hake Develop propagation, attenuation, and scattering models for these aggregations

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2013
Accession Number
ADA597902

Entities

People

  • Joseph D. Warren
  • Kelly Benoit-Bird

Organizations

  • Oregon State University

Tags

DTIC Thesaurus Topics

  • Acoustic Scattering
  • Animals
  • Attenuation
  • Fish
  • Frequency
  • Frequency Bands
  • Geographic Regions
  • Habitats
  • High Resolution
  • Materials
  • Measurement
  • North America
  • Oceanography
  • Scattering
  • Target Strength
  • Three Dimensional
  • United States

Readers

  • Acoustical Oceanography.
  • Acoustics.
  • Marine Mammal Biology