Seismic moment tensor in anisotropic ATI media: shear faulting

被引：6

作者：

Cai Xiao-Gang ^{[1
,4
]}

Yao Chen ^{[2
]}

Chen Xiao-Fei ^{[3
]}

机构：

[1] China Earthquake Adm, Inst Crustal Dynam, Beijing 100085, Peoples R China

[2] China Earthquake Adm, Inst Geol, Beijing 100029, Peoples R China

[3] Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China

[4] Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China

来源：

CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION | 2011年 / 54卷 / 07期

关键词：

ATI media; Shear faulting; Seismic moment tensor; Non-double couple; EARTHQUAKE-SOURCE PARAMETERS; ARBITRARY SPATIAL ORIENTATION; QUARTIC MOVEOUT COEFFICIENT; SURFACE-WAVES; WENCHUAN EARTHQUAKE; RAPID-DETERMINATION; FOCAL MECHANISMS; DEEP EARTHQUAKES; ELASTIC-MEDIA; POINT SOURCES;

D O I：

10.3969/j.issn.0001-5733.2011.07.011

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Assuming the fault zone as anisotropic ATI media, the analytical expressions of seismic moment tensor in ATI media have been derived, furthermore, we have modeled the effect of anisotropic parameters on DC, CLVD, and ISO. Some results have shown that shear faulting can also generate isotropic component which will lead to volume change along ATI symmetry axis, however, when fault surface is located in the symmetry plane of ATI or fault zone is isotropic structure, shear faulting can be regarded as double couple mechanism in terms of radiation pattern.

引用

页码：1772 / 1782

页数：11

共 53 条

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