Title :
Tomographic mapping of sediments in shallow water
Author :
Potty, Gopu R. ; Miller, James H.
Author_Institution :
Dept. of Ocean Eng., Univ. of Rhode Island, Narragansett, RI, USA
fDate :
4/1/2003 12:00:00 AM
Abstract :
Sediment compressional wave speeds were estimated using broad-band data in range-dependent environments. The environment was assumed as mildly range dependent and was modeled using adiabatic theory. The inversion scheme was based on group speed-dispersion behavior. A genetic algorithm (GA) combined with a neighborhood approach was used for the search. The top layer of sediment was mapped in the shelf region using acoustic data from explosive sources collected on a vertical line array.
Keywords :
acoustic dispersion; acoustic signal processing; acoustic tomography; genetic algorithms; inverse problems; oceanography; seafloor phenomena; sediments; underwater acoustic propagation; acoustic data; adiabatic theory; broad-band data; environment model; explosive sources; genetic algorithm; geoacoustic inversion; group speed-dispersion behavior based inversion scheme; neighborhood approach; range-dependent environments; sediment compressional wave speeds; sediment tomography; shallow water sediments; shelf region; tomographic mapping; top layer sediment; vertical line array; Acoustic arrays; Acoustic propagation; Explosives; Genetic algorithms; Geoacoustic inversion; Nonlinear acoustics; Sea measurements; Sea surface; Sediments; Tomography;
Journal_Title :
Oceanic Engineering, IEEE Journal of
DOI :
10.1109/JOE.2003.811891
