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Journal Articles Journal of the Acoustical Society of America Year : 2008

Extracting the local Green's function on a horizontal array from ambient ocean noise

Abstract

Using only ocean ambient noise recordings it is possible to approximate the local time domain Green's function (TDGF) and extract the time delays associated with different ray path between the elements of a bottom hydrophone array. Comparing the strength of the noise correlation function taken over increasing time windows with residual fluctuations points to an optimum time window to use in the noise correlation function. Through comparison with computer simulations the resulting time series is shown to accurately approximate noise responses in the environment. Analysis of the TDGF gives accurate environmental detail, specifically the critical angle at the water-sediment interface.

Dates and versions

insu-00371305 , version 1 (27-03-2009)

Identifiers

Cite

S. E. Fried, W. A. Kuperman, Karim G. Sabra, Philippe Roux. Extracting the local Green's function on a horizontal array from ambient ocean noise. Journal of the Acoustical Society of America, 2008, 124 (4), pp.183 à 188. ⟨10.1121/1.2960937⟩. ⟨insu-00371305⟩
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