GSTDTAP  > 气候变化
DOI10.1002/2017GL074158
Seismic characteristics of supershear and sub-Rayleigh earthquakes: Implication from simple cases
Zhang, Zhenguo1; Xu, Jiankuan1; Huang, Hanqing2; Chen, Xiaofei1
2017-07-16
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2017
卷号44期号:13
文章类型Article
语种英语
国家Peoples R China
英文摘要

Numerous investigations of supershear earthquakes make a conclusion that a supershear earthquake produces a seismic shock wave on the ground that may increase the resulting destruction. We investigate a supershear rupture promoted by the free surface and find out that although the seismic energy of a supershear earthquake can be transmitted further with large amplitudes, the peak slip velocity on a fault near the free surface is smaller than that caused by a subshear rupture earthquake. Our results show that the free-surface-induced supershear rupture mitigates the amplitudes of ground motions near the fault plane compared with the subshear rupture. The Coulomb failure change derived from dynamic modeling further suggests that this free-surface-induced supershear reduces aftershock potential compared to a subshear rupture. Both ground motion at near-fault and aftershock possibility show low risk for the free-surface-induced supershear rupture earthquake than subshear earthquake, contrary to the traditional concept.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000406257400028
WOS关键词RUPTURE DYNAMICS ; GROUND MOTION ; SHEAR CRACKS ; FAULT ; SIMULATIONS ; TRANSITION ; VELOCITY ; SURFACE ; MODELS
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
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/26690
专题气候变化
作者单位1.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen, Peoples R China;
2.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei, Anhui, Peoples R China
推荐引用方式
GB/T 7714
Zhang, Zhenguo,Xu, Jiankuan,Huang, Hanqing,et al. Seismic characteristics of supershear and sub-Rayleigh earthquakes: Implication from simple cases[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(13).
APA Zhang, Zhenguo,Xu, Jiankuan,Huang, Hanqing,&Chen, Xiaofei.(2017).Seismic characteristics of supershear and sub-Rayleigh earthquakes: Implication from simple cases.GEOPHYSICAL RESEARCH LETTERS,44(13).
MLA Zhang, Zhenguo,et al."Seismic characteristics of supershear and sub-Rayleigh earthquakes: Implication from simple cases".GEOPHYSICAL RESEARCH LETTERS 44.13(2017).
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