气候变化领域集成服务门户(CCPortal): Revisiting the Timpson Induced Earthquake Sequence: A System of Two Parallel Faults

CCPortal

DOI	10.1029/2020GL089192
	Revisiting the Timpson Induced Earthquake Sequence: A System of Two Parallel Faults
	Wang K.; Ellsworth W.; Beroza G.C.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	The 17 May 2012 M4.8 Timpson earthquake is the largest known earthquake in eastern Texas. It is thought to have been induced by wastewater injection from two nearby, high-volume wells. Its cataloged aftershocks form a NW-SE trend, which unlike other induced earthquakes sequences is unfavorably oriented for failure in the local stress field. To understand this, we enriched the catalog using PhaseNet, a deep-learning-based picker followed by double-difference relocation with cross-correlation-based differential traveltimes. We clustered the aftershocks based on waveform similarity. Most of the seismicity falls into two clusters, which define a detailed fault structure of two parallel subfaults that are more favorably oriented than the overall trend. We inferred from waveform similarity that the sequence initiated on the northern subfault with a M3.9 foreshock and M4.8 mainshock, then extended to the southern subfault with a M4.1 aftershock, and was finally reactivated on the northern subfault with two more M4 events. ©2020. The Authors.
英文关键词	Deep learning; Faulting; Cross correlations; Double differences; Earthquake sequences; Fault structure; High volumes; Local stress; Mainshock; Waveform similarity; Earthquakes; earthquake event; fault geometry; fluid injection; foreshock; learning; seismicity; steam injection; wastewater; waveform analysis; Texas; United States
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170061
作者单位	Department of Geophysics, Stanford University, Stanford, CA, United States
推荐引用方式 GB/T 7714	Wang K.,Ellsworth W.,Beroza G.C.. Revisiting the Timpson Induced Earthquake Sequence: A System of Two Parallel Faults[J],2020,47(15).
APA	Wang K.,Ellsworth W.,&Beroza G.C..(2020).Revisiting the Timpson Induced Earthquake Sequence: A System of Two Parallel Faults.Geophysical Research Letters,47(15).
MLA	Wang K.,et al."Revisiting the Timpson Induced Earthquake Sequence: A System of Two Parallel Faults".Geophysical Research Letters 47.15(2020).