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Fault weakening caused by smectite swelling
http://hdl.handle.net/2241/0002001554
http://hdl.handle.net/2241/0002001554f5e02a44-9f50-4fa7-91cd-d1bb20feda52
名前 / ファイル | ライセンス | アクション |
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EPS_71-1.pdf (3.9 MB)
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Item type | Journal Article(1) | |||||||||||||||
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公開日 | 2021-10-11 | |||||||||||||||
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タイトル | Fault weakening caused by smectite swelling | |||||||||||||||
言語 | en | |||||||||||||||
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言語 | eng | |||||||||||||||
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資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||
資源タイプ | journal article | |||||||||||||||
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アクセス権 | open access | |||||||||||||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||||||
著者 |
Kameda, Jun
× Kameda, Jun
× Uno, Masaoki
× Conin, Marianne
× 氏家, 恒太郎× Hamada, Yohei
× Kimura, Gaku
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内容記述タイプ | Abstract | |||||||||||||||
内容記述 | The large slip along the shallow subduction interface during the 2011 Tohoku-Oki earthquake (Mw9.0) caused a huge tsunami that struck the northeast coast of Honshu, Japan. The Integrated Ocean Drilling Program Expedition 343 JFAST program revealed that the fault zone is composed primarily of smectite. Our swelling experiments using the fault material demonstrated that the swelling pressure systematically increases with a decrease in sample porosity. Based on in situ porosity estimations in the IODP borehole, the swelling pressure of the fault is as high as 8 MPa, which is comparable to the effective normal stress at the drill site (~ 7 MPa). This also suggests that the modified effective confining pressure of the fault is quite low or potentially zero, meaning that fault strength is governed mainly by cohesion rather than frictional strength. The fault may therefore be intrinsically weak, which could enhance the coseismic displacement toward the trench when earthquake slip propagates from depth. | |||||||||||||||
言語 | en | |||||||||||||||
書誌情報 |
en : Earth, Planets and Space 巻 71, 号 1, p. 131, 発行日 2019-12 |
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収録物識別子タイプ | EISSN | |||||||||||||||
収録物識別子 | 1880-5981 | |||||||||||||||
DOI | ||||||||||||||||
関連タイプ | isIdenticalTo | |||||||||||||||
識別子タイプ | DOI | |||||||||||||||
関連識別子 | https://doi.org/10.1186/s40623-019-1108-5 | |||||||||||||||
権利情報 | ||||||||||||||||
言語 | en | |||||||||||||||
権利情報 | © The Author(s) 2019. | |||||||||||||||
権利情報 | ||||||||||||||||
言語 | en | |||||||||||||||
権利情報 | This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creat iveco mmons .org/licen ses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. | |||||||||||||||
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出版タイプ | VoR | |||||||||||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||
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出版者 | Springer | |||||||||||||||
言語 | en |