Accession Number : ADA140869

Title :   Acoustic Attenuation in Ocean Sediments Found in Shallow Water Regions.

Descriptive Note : Technical rept.,

Corporate Author : TEXAS UNIV AT AUSTIN APPLIED RESEARCH LABS

Personal Author(s) : Focke,K C

PDF Url : ADA140869

Report Date : 29 Feb 1984

Pagination or Media Count : 71

Abstract : The acoustic attenuation in ocean sediments is a major loss mechanism for low frequency acoustic propagation in shallow water regions. Analysis of measured propagation in these regions has generally included estimates of the attenuation in the sediment, without consideration of the variations in attenuation as a function of depth. It will be shown that these variations can have a significant impact on the standard estimates. A new procedure is then developed which provides estimates of the attenuation as a function of depth. This procedure is used to obtain attenuation depth profiles in three shallow water regions. These estimated profiles present characteristics observed in laboratory and in situ measurements.

Descriptors :   *Sound transmission, Underwater sound, Shallow water, Sediments, Acoustic attenuation, Profiles

Subject Categories : Physical and Dynamic Oceanography
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE