Seismic Moment Tensor in Anisotropic ATI Media： Shear Faulting

详细信息   

• 责任者：Cai Xiaogang (Institute of Crustal Dynamics ; China Earthquake Administration ; Beijing 100085 ; China) ; Yao Chen
• 刊名：Chinese Journal of Geophysics
• 出版年：2011
• 卷期：54(7)
• 关键词：震源 ; focus ; 各向异性 ; anisotropy ; 地震矩 ; seismic moment
• 页码：p.1772-1782
• 图表：4 illus., 1 table, 54 refs.
• 分类号：0500
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

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.