The variation features of friction coefficient on the fault planes around the epicenter preceding the 2010 Bio-Bío, Chile MW8.8 earthquake

For one hundred earthquakes (5.0≤MW≤6.9) that occurred around the epicenter of the 2010 Bio-Bío, Chile MW8.8 earthquake from 1 January 1990 to 26 February 2010, their focal mechanism solutions were used to calculate the friction coefficient on the fault plane and the friction coefficient as a functi...

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Main Authors: Xuezhong Chen, Xiangyun Guo, Yan’e Li
Format: Article
Language:zho
Published: Editorial Office of Progress in Earthquake Sciences 2022-12-01
Series:地震科学进展
Subjects:
Online Access:https://www.gjdzdt.cn/en/article/doi/10.19987/j.dzkxjz.2022-027
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author Xuezhong Chen
Xiangyun Guo
Yan’e Li
author_facet Xuezhong Chen
Xiangyun Guo
Yan’e Li
author_sort Xuezhong Chen
collection DOAJ
description For one hundred earthquakes (5.0≤MW≤6.9) that occurred around the epicenter of the 2010 Bio-Bío, Chile MW8.8 earthquake from 1 January 1990 to 26 February 2010, their focal mechanism solutions were used to calculate the friction coefficient on the fault plane and the friction coefficient as a function of time. The results show that within the period of four years and two months from the beginning of 2006 until the occurrence of the Bio-Bío mainshock the friction coefficient around the epicentral area showed a decreasing trend, dropped from about 0.73 at the beginning of 2006 to about 0.4 immediately towards the occurrence of the Bio-Bío mainshock, with a relative decrease of 45.2%. It will be of great significance for understanding the occurrence process of strong earthquakes and earthquake prediction.
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spelling doaj.art-77f9d69b500a49a2bf69e52c450a3f912023-03-28T06:41:33ZzhoEditorial Office of Progress in Earthquake Sciences地震科学进展2096-77802022-12-01521255355810.19987/j.dzkxjz.2022-0272022-027The variation features of friction coefficient on the fault planes around the epicenter preceding the 2010 Bio-Bío, Chile MW8.8 earthquakeXuezhong Chen0Xiangyun Guo1Yan’e Li2Institute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaInstitute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaInstitute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaFor one hundred earthquakes (5.0≤MW≤6.9) that occurred around the epicenter of the 2010 Bio-Bío, Chile MW8.8 earthquake from 1 January 1990 to 26 February 2010, their focal mechanism solutions were used to calculate the friction coefficient on the fault plane and the friction coefficient as a function of time. The results show that within the period of four years and two months from the beginning of 2006 until the occurrence of the Bio-Bío mainshock the friction coefficient around the epicentral area showed a decreasing trend, dropped from about 0.73 at the beginning of 2006 to about 0.4 immediately towards the occurrence of the Bio-Bío mainshock, with a relative decrease of 45.2%. It will be of great significance for understanding the occurrence process of strong earthquakes and earthquake prediction.https://www.gjdzdt.cn/en/article/doi/10.19987/j.dzkxjz.2022-027chile mw8.8 earthquakefault planefriction coefficientvariation features
spellingShingle Xuezhong Chen
Xiangyun Guo
Yan’e Li
The variation features of friction coefficient on the fault planes around the epicenter preceding the 2010 Bio-Bío, Chile MW8.8 earthquake
地震科学进展
chile mw8.8 earthquake
fault plane
friction coefficient
variation features
title The variation features of friction coefficient on the fault planes around the epicenter preceding the 2010 Bio-Bío, Chile MW8.8 earthquake
title_full The variation features of friction coefficient on the fault planes around the epicenter preceding the 2010 Bio-Bío, Chile MW8.8 earthquake
title_fullStr The variation features of friction coefficient on the fault planes around the epicenter preceding the 2010 Bio-Bío, Chile MW8.8 earthquake
title_full_unstemmed The variation features of friction coefficient on the fault planes around the epicenter preceding the 2010 Bio-Bío, Chile MW8.8 earthquake
title_short The variation features of friction coefficient on the fault planes around the epicenter preceding the 2010 Bio-Bío, Chile MW8.8 earthquake
title_sort variation features of friction coefficient on the fault planes around the epicenter preceding the 2010 bio bio chile mw8 8 earthquake
topic chile mw8.8 earthquake
fault plane
friction coefficient
variation features
url https://www.gjdzdt.cn/en/article/doi/10.19987/j.dzkxjz.2022-027
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