Skip to Main content Skip to Navigation
Journal articles

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

S. E. Fried 1 W. A. Kuperman 1 Karim G. Sabra 2 Philippe Roux 3
1 Marine Physical Laboratory of the Scripps Institution of Oceanography
2 School of Mechanical Engineering
3 LGIT - Laboratoire de Géophysique Interne et Tectonophysique
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.
Keywords : acoustic noise acoustic signal processing acoustic transducer arrays array signal processing Green's function methods hydrophones sediments underwater sound
Document type :
Journal articles
Complete list of metadata
https://hal-insu.archives-ouvertes.fr/insu-00371305
Contributor : Pascale Talour <>
Submitted on : Friday, March 27, 2009 - 12:12:40 PM
Last modification on : Tuesday, September 7, 2021 - 3:54:29 PM

Identifiers

Collections

INSU | CNRS | UNIV-SAVOIE | IFSTTAR | IRSTEA | INRAE | UGA

Citation

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, Acoustical Society of America, 2008, 124 (4), pp.183 à 188. ⟨10.1121/1.2960937⟩. ⟨insu-00371305⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

349