globalchange  > 科学计划与规划
DOI: 10.1002/2016GL070581
论文题名:
Stress rotations due to the M6.5 foreshock and M7.3 main shock in the 2016 Kumamoto, SW Japan, earthquake sequence
作者: Yoshida K.; Hasegawa A.; Saito T.; Asano Y.; Tanaka S.; Sawazaki K.; Urata Y.; Fukuyama E.
刊名: Geophysical Research Letters
ISSN: 0094-8556
EISSN: 1944-8287
出版年: 2016
卷: 43, 期:19
起始页码: 10097
结束页码: 10104
语种: 英语
英文关键词: fault strength ; focal mechanisms ; stress field ; stress magnitude ; the 2016 Kumamoto earthquake
Scopus关键词: Faulting ; Geophysics ; Shear stress ; Earthquake sequences ; Fault strength ; Focal mechanism ; Spatio-temporal variation ; Stress field ; Stress magnitude ; Stress orientations ; Stress rotation ; Earthquakes
英文摘要: A shallow M7.3 event with a M6.5 foreshock occurred along the Futagawa-Hinagu fault zone in Kyushu, SW Japan. We investigated the spatiotemporal variation of the stress orientations in and around the source area of this 2016 Kumamoto earthquake sequence by inverting 1218 focal mechanisms. The results show that the σ3 axis in the vicinity of the fault plane significantly rotated counterclockwise after the M6.5 foreshock and rotated clockwise after the M7.3 main shock in the Hinagu fault segment. This observation indicates that a significant portion of the shear stress was released both by the M6.5 foreshock and M7.3 main shock. It is estimated that the stress release by the M6.5 foreshock occurred in the shallower part of the Hinagu fault segment, which brought the stress concentration in its deeper part. This might have caused the M7.3 main shock rupture mainly along the deeper part of the Hinagu fault segment after 28 h. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84990943183&doi=10.1002%2f2016GL070581&partnerID=40&md5=32d392ffe63e08f0b37eab319a0fa0db
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9519
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan

Recommended Citation:
Yoshida K.,Hasegawa A.,Saito T.,et al. Stress rotations due to the M6.5 foreshock and M7.3 main shock in the 2016 Kumamoto, SW Japan, earthquake sequence[J]. Geophysical Research Letters,2016-01-01,43(19).
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