Publication Detail

Mechanisms for Subcritical Penetration into a Sandy Bottom: Experimental and Modeling Results.

Alain Maguer, Warren L. Fox, Henrik Schmidt
2000
11 pp.
MITSG 03-11J
$5.50 (7.50 international). DOM
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This paper presents preliminary results of a study conducted to investigate the mechanisms contributing to subcritical acoustic penetration into ocean sediments, and to quantify the results for use in sonar performance prediction for the detection of buried objects. In situ acoustic measurements were performed on a sandy bottom whose geoacoustical and geomorphological properties were also measured. For the specific seafloor examined, analysis suggests that for frequencies below 5-7 kHz sound penetration into the sediment at subcritical insonification is dominated by the evanescent field, while scattering due to surface roughness is the dominant mechanism at higher frequencies.

type: Technical reports

Parent Project

Project No.: 2000-RCM-5
Title: Acoustic Sensing of Sediment Properties using a WWW-controlled Shallow Water Mooring

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