Method and apparatus of classifying marine sediment

Details Method and apparatus of classifying marine sediment Method and apparatus of classifying marine sediment

1997-04-11

1998-09-29

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Echo systems

367 15, 367 21, 7317032, G01V 138

Patent

active

058154655

ABSTRACT:
An acoustic classification system in which echoes from sediment-sediment or water-sediment interfaces are compared to model waveforms predicted by Biot's equations for a given set of acoustic material parameters. The selection of parameters are varied until a match occurs, indicating the correct parameters of the reflecting sediments. Preferably, the variation of selected test parameters is conducted by formal search algorithms, such as simulated annealing or genetic algorithms, to increase computational efficiency.

REFERENCES:
patent: 5559754 (1996-09-01), Carnaggio et al.
patent: 5606533 (1997-02-01), Cranford et al.
A. Turgut et al., Synthetic Seismograms for Marine Sediments and Determination of Porosity and Permeability, Geophysics, vol. 53, pp. 1056-1067 (No. 8, Aug. 1988).
Journal of the Acoustical Society of America, vol. 99, No. 4, Pt. 2, p. 2451.
Letter from Brian Schmitt to Ed Miles dated Apr. 2, 1997, Concerning AB, above.
Stern et al., "Wave reflection from a sediment layer with depth dependent properties", Journal of the Acoustical Society of America, vol. 77, No. 5, pp. 1781-1788, May 1985.

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