Title :
Geoacoustic inversions using Combustive Sound Source data from Shallow Water-2006 experiment
Author :
Potty, Gopu R. ; Miller, James H.
Author_Institution :
Dept. of Ocean Eng., Univ. of Rhode Island, Narragansett, RI, USA
Abstract :
Combustive Sound Source (CSS) data collected on Single Hydrophone Receiving Units (SHRU), in water depths ranging from 65 m to 110 m, during the Shallow Water 2006 experiment clearly show modal dispersion effects and are suitable for modal geoacoustic inversions. CSS shots were set off at 26 m depth in 100 m of water. The inversions performed are based on an iterative scheme using dispersion-based short time Fourier transform in which each time-frequency tiling is adaptively rotated in the time-frequency plane, depending on the local wave dispersion. Results of the inversions are found to compare favorably to local core data.
Keywords :
Fourier transforms; acoustic dispersion; acoustic radiators; acoustic signal processing; geophysical signal processing; hydrophones; iterative methods; oceanographic techniques; time-frequency analysis; CSS data; SHRU; Shallow Water-2006 experiment; combustive sound source data; dispersion-based short time Fourier transform; iterative method; modal dispersion effect; modal geoacoustic inversion; single hydrophone receiving unit; time-frequency tiling; wave dispersion; Acoustics; Dispersion; Fourier transforms; Sediments; Time frequency analysis; Tomography; Water resources; DSTFT; combustive sound source; geoacoustic inversion;
Conference_Titel :
Ocean Electronics (SYMPOL), 2009 International Symposium on
Conference_Location :
Cochin
Print_ISBN :
978-1-4244-9119-3
Electronic_ISBN :
978-1-4244-9118-6
DOI :
10.1109/SYMPOL.2009.5664154
