A Comparison of Volume Scattering Strength Data with Model Calculations based on Quasisynoptically Collected Fishery Data

• Main Author: Love, Richard H.
• Other Authors: NAVAL RESEARCH LAB STENNIS SPACE CENTER MS
• Format: Text
• Language: English
• Published: 1993
• Subjects: Geography; Acoustic Detection and Detectors; Acoustics; *FISHERIES; *REVERBERATION; MATHEMATICAL MODELS; REPRINTS; VOLUME; SCATTERING; MODIFICATION; COMPARISON; NORWEGIAN SEA; UNITED KINGDOM; DEEP SCATTERING LAYERS; MARINE BIOLOGICAL NOISE; GEOGRAPHIC DISTRIBUTION; ACOUSTIC DATA; UNDERWATER ACOUSTICS; CORRELATION; SURVEYS; MODEL TESTS; ACOUSTIC MEASUREMENT; MARINE BIOLOGY; OCEANS; CST(CRITICAL SEA TEST); BLUE WHITING(FISHES); SWIMBLADDER SCATTERING MODEL; Norwegian Sea
• Online Access: http://www.dtic.mil/docs/citations/ADA275486; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA275486

Volume reverberation measurements were made between 800 and 5000 Hz in the Norwegian Sea in August 1988 and west of Great Britain in April 1989. Coincidentally, extensive fishery surveys were conducted at about the same time near the two experimental areas. A comparison of acoustic results with model calculations based on the fishery data provided the means to determine if volume reverberation can be reliably predicted from high-quality biological information. Good correlation between acoustic data and model results was obtained after several plausible modifications were made to the fishery information. Results indicate that blue whiting are the major scatterers off Great Britain and that both blue whiting and redfish are important scatterers in the Norwegian Sea. Before this study, blue whiting were expected to dominate in both areas and redfish had been assumed to be unimportant. The study shows that volume scattering strengths can be accurately predicted in the characteristics of the scatterers are well known. Volume reverberation, Acoustics.