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Elastic strain energy and pore-fluid pressure control of aftershocks
http://hdl.handle.net/2237/00032616
http://hdl.handle.net/2237/000326166608fcec-b731-4924-839f-bed0a2d25d6c
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
EPSL_TMN2019_rev_final (2.5 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-09-09 | |||||
| タイトル | ||||||
| タイトル | Elastic strain energy and pore-fluid pressure control of aftershocks | |||||
| 言語 | en | |||||
| 著者 |
Terakawa, Toshiko
× Terakawa, Toshiko× Matsu'ura, Mitsuhiro× Noda, Akemi |
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| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | elastic strain energy | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | earthquake generation | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | background stress | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | pore-fluid pressure | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Landers earthquake | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | ROC analysis | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Aftershocks are well-known, however their triggering mechanisms remain unclear. The Coulomb failure stress change (ΔCFS) has been widely implemented to understand the spatial distribution of aftershocks. Here we propose a new metric for evaluating aftershock generation based on the energetics of shear faulting in a prestressed state. Unlike ΔCFS, the new metric depends not only on coseismic stress changes but also on background crustal stresses. The energetics-based formulation expands the ΔCFS defined on a specific plane into a generalized failure stress defined in a three-dimensional space. We examined the diagnostic ability of the new metric by applying receiver operating characteristic analysis to 12,175 aftershocks (M≥0) that followed the 1992 Landers earthquake. With a realistic background stress field inferred from thousands of earthquake focal mechanisms, the new metric was able to discriminate the triggering mechanisms of the aftershocks: two-thirds were direct responses to coseismic stress changes and one-fifth resulted from strength decreases owing to pore-fluid pressure increases. | |||||
| 言語 | en | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | ファイル公開：2022-04-01 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| 出版タイプ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1016/j.epsl.2020.116103 | |||||
| ISSN（print） | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0012-821X | |||||
| 書誌情報 |
en : Earth and Planetary Science Letters 巻 535, p. 116103, 発行日 2020-04-01 |
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| 著者版フラグ | ||||||
| 値 | author | |||||
