Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL092563 |
Conjugate fault deformation revealed by aftershocks of the 2013 Mw6.6 Lushan earthquake and seismic anisotropy tomography | |
Ying Liu; Haijiang Zhang; Michael Kendall; James Wookey | |
2021-07-03 | |
发表期刊 | Geophysical Research Letters
![]() |
出版年 | 2021 |
英文摘要 | Seismic anisotropy is sensitive to the alignment of minerals, fluid-filled cracks and fractures caused by fault deformation, thus providing a signature of fault deformation, especially in the aseismic layer. In this study, we use seismic traveltime anisotropy tomography to study the spatial distribution of azimuthal anisotropy in the region of the 2013 Mw 6.6 Lushan earthquake. Our analysis reveals both stress-induced and structure-controlled seismic anisotropy mechanisms. The distribution of seismicity and anisotropy clearly delineates conjugate faults in the seismogenic zone between depths of 8 and 15 km. Two near-vertical stripes or zones of strong seismic anisotropy reveal the continuation of these faults into the diagenetic or overlying aseismic crust. The anisotropic corridors associated with the conjugate faults are interpreted in terms of the crystal preferred orientation of fault rock minerals, which may be enhanced by shear-band compaction. Our results demonstrate how seismic anisotropy can provide new insights into fault deformation. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/333818 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Ying Liu,Haijiang Zhang,Michael Kendall,et al. Conjugate fault deformation revealed by aftershocks of the 2013 Mw6.6 Lushan earthquake and seismic anisotropy tomography[J]. Geophysical Research Letters,2021. |
APA | Ying Liu,Haijiang Zhang,Michael Kendall,&James Wookey.(2021).Conjugate fault deformation revealed by aftershocks of the 2013 Mw6.6 Lushan earthquake and seismic anisotropy tomography.Geophysical Research Letters. |
MLA | Ying Liu,et al."Conjugate fault deformation revealed by aftershocks of the 2013 Mw6.6 Lushan earthquake and seismic anisotropy tomography".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论