NDLI: Remote estimates of physical and acoustic sediment properties in the South China Sea using chirp sonar data and the biot model

Content Provider	IEEE Xplore Digital Library
Author	Schock, S.G.
Copyright Year	1976
Abstract	A chirp sonar acquires sea-bed reflection data in the South China Sea, generates imagery of the sediment layering, and estimates sediment properties along the acoustic propagation paths selected for the Asian Sea International Acoustics Experiment (ASIAEX). Normal incidence reflection data, collected by the chirp sonar, are processed with an inversion technique based on the Biot model. The inputs for the inversion are reflection coefficient and attenuation rolloff measurements extracted from chirp sonar reflection data. The inversion provides the acoustic and physical properties of the sediments for the top layer of the sea bed. Porosity, predicted by the inversion, agrees with directly measured porosity. Estimates of porosity, mean grain size, permeability, fast wave velocity, and attenuation (in decibels/meter) are given for the uppermost sediment layer along each of the acoustic propagation lines.
Sponsorship	IEEE Oceanic Engineering Society
Starting Page	1218
Ending Page	1230
Page Count	13
File Size	1955254
File Format	PDF
ISSN	03649059
Volume Number	29
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sediments Chirp Acoustic reflection Acoustic propagation Sonar measurements Acoustic measurements Sea measurements Image generation Attenuation measurement Data mining sediment classification Attenuation Biot model chirp sonar
Content Type	Text
Resource Type	Article
Subject	Ocean Engineering Mechanical Engineering Electrical and Electronic Engineering

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