| 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 |
Estimation of slip parameters associated with frictional heating during the 1999 Taiwan Chi-Chi earthquake by vitrinite reflectance geothermometry |
|
言語 |
en |
| 作成者 |
Maekawa, Yuka
Hirono, Tetsuro
Yabuta, Hikaru
Mukoyoshi, Hideki
Kitamura, Manami
Ikehara, Minoru
Tanikawa, Wataru
Ishikawa, Tsuyoshi
|
| 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 |
© 2014 Maekawa et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Carbonaceous material |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Thermal maturation |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Fault friction |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Chelungpu fault |
| 内容記述 |
|
|
内容記述 |
To estimate the slip parameters and understand the fault lubrication mechanism during the 1999 Taiwan Chi-Chi earthquake, we applied vitrinite reflectance geothermometry to samples retrieved from the Chelungpu fault. We found a marked reflectance anomaly of 1.30% ± 0.21% in the primary slip zone of the earthquake, whereas the reflectances in the surrounding deformed and host rocks were 0.45% to 0.77%. By applying a kinetic model of vitrinite thermal maturation together with a one-dimensional heat and thermal diffusion equation, we determined the shear stress and peak temperature in the slip zone during the earthquake to be 1.00 ± 0.04 MPa and 626°C ± 25°C, respectively. Taking into account the probable overestimation of the temperature owing to a mechanochemically enhanced reaction or flash heating at grain contacts, this temperature should be considered an upper limit. The lower limit was previously constrained to 400°C by studies of fluid-mobile trace-element concentrations and magnetic minerals. Therefore, we inferred that the peak temperature during the Chi-Chi earthquake was 400°C to 626°C, corresponding to an apparent friction coefficient of 0.01 to 0.06. Such low friction and the previous evidence of a high-temperature fluid suggest that thermal pressurization likely contributed to dynamic weakening during the Chi-Chi earthquake. |
|
言語 |
en |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
This study was supported by a Japan Ministry of Education, Culture, Sports, Science and Technology Grant-in-Aid for Young Scientists (A) 23684039, 2013. |
| 出版者 |
|
|
出版者 |
Springer Open |
| 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 |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1186/1880-5981-66-28 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1186/1880-5981-66-28 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1880-5981 |
| 開始ページ |
|
|
開始ページ |
28 |
| 書誌情報 |
Earth, Planets and Space
Earth, Planets and Space
巻 66,
p. 28,
発行日 2014-05-01
|
| 旧ID |
48724 |
EarthPlanetsSpace_66_28.pdf (794.7 KB)
