A passive inverse filter for Green's function retrieval

被引：46

作者：

Gallot, Thomas ^{[1
]}

Catheline, Stefan ^{[1
]}

Roux, Philippe ^{[1
]}

Campillo, Michel ^{[1
]}

机构：

[1] Univ Grenoble 1, Univ Savoie, Inst Sci Terre ISTerre, CNRS IFSTTAR UMR5275,INSU OSUG IRD UR219, F-38041 Grenoble, France

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2012年 / 131卷 / 01期

关键词：

SURFACE-WAVE TOMOGRAPHY; VIRTUAL SOURCE METHOD; CROSS-CORRELATION; SEISMIC NOISE; FIELDS;

D O I：

10.1121/1.3665397

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Passive methods for the recovery of Green's functions from ambient noise require strong hypotheses, including isotropic distribution of the noise sources. Very often, this distribution is nonisotropic, which introduces bias in the Green's function reconstruction. To minimize this bias, a spatiotemporal inverse filter is proposed. The method is tested on a directive noise field computed from an experimental active seismic data set. The results indicate that the passive inverse filter allows the manipulation of the spatiotemporal degrees of freedom of a complex wave field, and it can efficiently compensate for the noise wavefield directivity. (C) 2012 Acoustical Society of America

引用

页码：EL21 / EL27

页数：7

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