Accession Number : ADA597921


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


Corporate Author : OREGON STATE UNIV CORVALLIS COLL OF OCEANIC AND ATMOSPHERIC SCIENCES


Personal Author(s) : Benoit-Bird, Kelly J ; Warren, Joseph D


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA597921


Report Date : 30 Sep 2011


Pagination or Media Count : 5


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. 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


Descriptors :   *ACOUSTIC SCATTERING , *ATTENUATION , *CEPHALOPODA , *OCEAN MODELS , ACOUSTIC PROPERTIES , COASTAL REGIONS , NAVAL EQUIPMENT , PACIFIC OCEAN , PROPAGATION , SCHOOLS , SONAR , TARGET STRENGTH


Subject Categories : Biology
      Physical and Dynamic Oceanography
      Acoustics


Distribution Statement : APPROVED FOR PUBLIC RELEASE