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Frictional and transport properties of the Chelungpu fault from shallow borehole data and their correlation with seismic behavior during the 1999 Chi-Chi earthquake
https://hiroshima.repo.nii.ac.jp/records/2007342
https://hiroshima.repo.nii.ac.jp/records/20073429de1f73b-a01b-400b-a58c-14f8aaf5c348
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
JGeophysRes-SolidEarth_114_B01402.pdf (1011.1 KB)
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| Item type | デフォルトアイテムタイプ_（フル）(1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2023-03-18 | |||||||||
| タイトル | ||||||||||
| タイトル | Frictional and transport properties of the Chelungpu fault from shallow borehole data and their correlation with seismic behavior during the 1999 Chi-Chi earthquake | |||||||||
| 言語 | en | |||||||||
| 作成者 |
Tanikawa, Wataru
× Tanikawa, Wataru
× Shimamoto, Toshihiko
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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 | |||||||||
| 権利情報 | ||||||||||
| 権利情報 | Copyright (c) 2009 American Geophysical Union | |||||||||
| 主題 | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Friction coefficient | |||||||||
| 主題 | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | permeability | |||||||||
| 主題 | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | thermal pressurization | |||||||||
| 主題 | ||||||||||
| 主題Scheme | NDC | |||||||||
| 主題 | 450 | |||||||||
| 内容記述 | ||||||||||
| 内容記述 | We carried out low- and high-velocity friction tests on fault rock samples from shallow boreholes on the Taiwan Chelungpu fault and measured their fluid transport properties under high pressure with the objective of explaining the different seismic behavior in northern and southern sections of the fault during the 1999 Chi-chi earthquake. Our results of low-velocity friction tests demonstrate that fault gouge from the southern section of the fault exhibits velocity-weakening frictional behavior, whereas gouge from the northern section exhibits velocity-strengthening friction. Friction in the northern gouge decreased strongly with increasing wetness, whereas friction in southern gouge samples was not affected by wetness. A rapid reduction of friction was observed immediately after the onset of slip in high-velocity friction tests. The results of high-velocity friction tests were similar for all fault gouge samples tested, though permeability in the northern fault zone was lower than that in the south. Numerical modeling indicated that thermal pressurization in the northern fault zone promoted stress reduction and fault instability during slip, whereas it did not in the south. This contrasting seismic behavior between north and south is caused mainly by differences in fluid transport properties of the slip zones. More efficient thermal pressurization in the north explains the large slip displacement there. The results of our low-velocity friction tests are consistent with nucleation of the Chi-Chi earthquake in the south and propagation of the rupture from south to north. | |||||||||
| 言語 | en | |||||||||
| 出版者 | ||||||||||
| 出版者 | American Geophysical Union | |||||||||
| 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 | AO | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_b1a7d7d4d402bcce | |||||||||
| 関連情報 | ||||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | 10.1029/2008JB005750 | |||||||||
| 関連情報 | ||||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | http://dx.doi.org/10.1029/2008JB005750 | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 0148-–0227 | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AA10819743 | |||||||||
| 開始ページ | ||||||||||
| 開始ページ | B01402 | |||||||||
| 書誌情報 |
Journal of Geophysical Research - Solid Earth Journal of Geophysical Research - Solid Earth 巻 114, p. B01402, 発行日 2009 |
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| 旧ID | 25978 | |||||||||
