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

被引：34

作者：

Fried, S. E. ^{[1
]}

Kuperman, W. A. ^{[1
]}

Sabra, Karim G. ^{[2
]}

Roux, Philippe ^{[3
,4
]}

机构：

[1] Univ Calif San Diego, Scripps Inst Oceanog, Marine Phys Lab, La Jolla, CA 92093 USA

[2] Georgia Inst Technol, Sch Mech Engn, Atlanta, GA 30332 USA

[3] Univ Grenoble 1, Lab Geophys Interne & Tectonophys, F-38041 Grenoble, France

[4] CNRS, F-38041 Grenoble, France

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2008年 / 124卷 / 04期

关键词：

D O I：

10.1121/1.2960937

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

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. (C) 2008 Acoustical Society of America

引用

页码：EL183 / EL188

页数：6

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