Accession Number : ADA333313

Title :   Geo-acoustic Stratification Deep in the Sea Bed from Ambient Noise in Shallow Water

Descriptive Note : Final rept. 1 Oct 90-30 Sep 96

Corporate Author : SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA MARINE PHYSICAL LAB

Personal Author(s) : Buckingham, M. ; Deane, G.

PDF Url : ADA333313

Report Date : MAR 1997

Pagination or Media Count : 10

Abstract : The long-term objective is to develop a reliable ambient-noise inversion technique for obtaining the geo-acoustic parameters, including the stratification, of the sea bed from measurements of the broadband vertical coherence of the noise in shallow water. The method would be implemented in a free-floating instrument, self navigated with GPS, and consisting of a pair of vertically aligned hydrophones, to provide a cost-effective sensor system for collecting the required noise data over extensive areas of shallow water. The resultant bottom information would provide essential input to navy propagation loss models.

Descriptors :   *GEOACOUSTICS, *AMBIENT NOISE, SHALLOW WATER, ACOUSTIC MEASUREMENT, HYDROPHONES, UNDERWATER ACOUSTICS, STRATIFICATION, ACOUSTIC DATA, SEDIMENTS, OCEAN BOTTOM.

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE