Seabed acoustics of a sand ridge on the New Jersey continental shelf

Acoustic measurements were made on a sand ridge on the New Jersey continental shelf. Data collected on two L arrays separated by 20 km from a single multi-frequency tow suggest small horizontal environmental variability. Values for the sound speed structure of the seabed are extracted by first apply...

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Published in:The Journal of the Acoustical Society of America 2008-09, Vol.124 (3), p.EL151-EL156
Main Authors: KNOBLES, D. P, WILSON, P. S, GOFF, J. A, CHO, S. E
Format: Article
Language:English
Subjects:
Acoustics
Algorithms
Atlantic Ocean
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Geologic Sediments - chemistry
Marine
Models, Theoretical
Motion
New Jersey
Physics
Porosity
Radar
Silicon Dioxide - chemistry
Sound
Sound Spectrography
Time Factors
Underwater sound
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description Acoustic measurements were made on a sand ridge on the New Jersey continental shelf. Data collected on two L arrays separated by 20 km from a single multi-frequency tow suggest small horizontal environmental variability. Values for the sound speed structure of the seabed are extracted by first applying a geo-acoustic inversion method to broadband and narrowband acoustic data from short-range sources. Then, a parabolic equation algorithm is used to properly include the bathymetry and sub-bottom layering. Finally, the frequency dependence of the seabed attenuation is inferred by optimizing the model fit to long-range transmission loss data in the 50-3000 Hz band.
doi_str_mv 10.1121/1.2960977
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subjects Acoustics
Algorithms
Atlantic Ocean
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Geologic Sediments - chemistry
Marine
Models, Theoretical
Motion
New Jersey
Physics
Porosity
Radar
Silicon Dioxide - chemistry
Sound
Sound Spectrography
Time Factors
Underwater sound
title Seabed acoustics of a sand ridge on the New Jersey continental shelf
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