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DOI10.1029/2020GL089192
Revisiting the Timpson Induced Earthquake Sequence: A System of Two Parallel Faults
Kaiwen Wang; William Ellsworth; Gregory C. Beroza
2020-07-19
发表期刊Geophysical Research Letters
出版年2020
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.

领域气候变化
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/284188
专题气候变化
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Kaiwen Wang,William Ellsworth,Gregory C. Beroza. Revisiting the Timpson Induced Earthquake Sequence: A System of Two Parallel Faults[J]. Geophysical Research Letters,2020.
APA Kaiwen Wang,William Ellsworth,&Gregory C. Beroza.(2020).Revisiting the Timpson Induced Earthquake Sequence: A System of Two Parallel Faults.Geophysical Research Letters.
MLA Kaiwen Wang,et al."Revisiting the Timpson Induced Earthquake Sequence: A System of Two Parallel Faults".Geophysical Research Letters (2020).
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