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Repeating Slip Events at a Circular Asperity : Numerical Simulation with a Rate- and State-Dependent Friction Law
https://doi.org/10.15083/0000032559
https://doi.org/10.15083/0000032559de8db205-9f9c-4d2a-a55b-4927da22dbde
名前 / ファイル | ライセンス | アクション |
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IHO78203.pdf (1.1MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2007-04-23 | |||||
タイトル | ||||||
タイトル | Repeating Slip Events at a Circular Asperity : Numerical Simulation with a Rate- and State-Dependent Friction Law | |||||
言語 | en | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | episodic aseismic slip event | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | repeating earthquake | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | postseismic sliding | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | friction | |||||
主題Scheme | Other | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15083/0000032559 | |||||
ID登録タイプ | JaLC | |||||
その他のタイトル | ||||||
その他のタイトル | 円形アスペリティで繰り返し発生するすべり: すべり速度・状態依存摩擦法則による数値シミュレーション | |||||
著者 |
Kato, Naoyuki
× Kato, Naoyuki |
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著者別名 | ||||||
識別子 | 125707 | |||||
識別子Scheme | WEKO | |||||
姓名 | 加藤, 尚之 | |||||
著者所属 | ||||||
著者所属 | Earthquake Research Institute, University of Tokyo | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | I perform numerical simulation of slip process on a two-dimensional planar fault in an infinite uniform elastic medium using a rate- and state-dependent friction law. A circular patch with velocity-weakening frictional property is embedded in the fault, while velocity-strengthening frictional property is assumed in the other region. Simulation results indicate that slip events repeatedly occur at the velocity-weakening patch and slower slip propagates outwards in the velocity-strengthening region. The characteristics of simulated slip on the fault patch are controlled by the ratio of the patch radius r to the critical fault radius rc, which is the critical nucleation patch radius for unstable slip, and is defined as a function of frictional constitutive parameters. When r≫rc, ordinary earthquakes with high slip rates repeatedly occur at the fault patch and postseismic aseismic slip follows on the fault outside the patch. When r~rc, episodic aseismic slip events (silent earthquakes) occur. The rise time of the episodic event increases with a decrease in r/rc. When r≪rc, stable sliding occurs. These results indicate that the rc value can be estimated from geodetically determined values of the fault radius and the source duration of an episodic aseismic slip event. | |||||
書誌情報 |
東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo 巻 78, 号 2, p. 151-166, 発行日 2003 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00408972 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00162258 | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
日本十進分類法 | ||||||
主題 | 51.1 | |||||
主題Scheme | NDC | |||||
出版者 | ||||||
出版者 | 東京大学地震研究所 | |||||
出版者別名 | ||||||
Earthquake Research Institute, University of Tokyo |