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DOI | 10.1029/2019GL086369 |
The 3-D Spatial Distribution of Shear Strain Energy Changes Associated With the 2016 Kumamoto Earthquake Sequence, Southwest Japan | |
Noda, Akemi1; 39;ura, Mitsuhiro2 | |
2020-02-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | Shear strain energy is an essential physical quantity governing earthquake generation. To calculate the shear strain energy changes due to an earthquake, we need both coseismic stress changes and background crustal stress. The orientation of the background stress can be estimated from earthquake focal mechanisms, but its absolute level is still uncertain. Assuming the level of the background deviatoric stress to be frictional strength in the crust, we evaluated the three-dimensional distribution of shear strain energy changes associated with the 2016 Kumamoto earthquake sequence, southwest Japan. Its spatial patterns strongly depend on the background stress level. From the energy balance of shear faulting, we proposed that the volume integral of the shear strain energy changes could constrain the background deviatoric stress level. It should be >14 MPa at 10-km depth at the very least. We showed that approximately 75% of aftershocks occurred where the shear strain energy increased. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000529107400046 |
WOS关键词 | BAYESIAN INFORMATION CRITERION ; DATA INVERSION ; SOURCE REGION ; STRESS CHANGE ; SEISMICITY ; DEPTH ; CRUST |
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/279587 |
专题 | 气候变化 |
作者单位 | 1.Natl Res Inst Earth Sci & Disaster Resilience, Tsukuba, Ibaraki, Japan; 2.Kyoto Univ, Grad Sch Engn, Kyoto, Japan; 3.Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi, Japan; 4.Inst Stat Math, Tachikawa, Tokyo, Japan |
推荐引用方式 GB/T 7714 | Noda, Akemi,39;ura, Mitsuhiro. The 3-D Spatial Distribution of Shear Strain Energy Changes Associated With the 2016 Kumamoto Earthquake Sequence, Southwest Japan[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(3). |
APA | Noda, Akemi,&39;ura, Mitsuhiro.(2020).The 3-D Spatial Distribution of Shear Strain Energy Changes Associated With the 2016 Kumamoto Earthquake Sequence, Southwest Japan.GEOPHYSICAL RESEARCH LETTERS,47(3). |
MLA | Noda, Akemi,et al."The 3-D Spatial Distribution of Shear Strain Energy Changes Associated With the 2016 Kumamoto Earthquake Sequence, Southwest Japan".GEOPHYSICAL RESEARCH LETTERS 47.3(2020). |
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