| 以2008年汶川8.0级地震为例分析地震触发的静态库仑应力计算的不确定性 |
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| 引用本文： | 王力伟,陈棋福.以2008年汶川8.0级地震为例分析地震触发的静态库仑应力计算的不确定性[J].中国地震研究,2012,26(1):33-46. |
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| 作者姓名： | 王力伟 陈棋福 |
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| 基金项目： | sponsored by the Special Scientific Research Projects on Earthquake of Institute of Earthquake Science,CEA (IES0207690213);China Earthquake Administration(CEA200708008) |
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| 摘 要： | Static Coulomb stress change induced by earthquake slip is frequently used to explain earthquake activities and aftershock distribution.However,some parameters for the Coulomb stress calculation are unable to be well constrained from laboratory experiments and field observations.Different parameters may directly affect the pattern of static Coulomb stress.The static Coulomb stress changes induced by the Wenchuan earthquake calculated by six research groups are not consistent with each other.To investigate how the parameters affect the calculation results,we change the parameters in turn through modeling and compare the results of different calculation parameters.We find that gravity,position and strike of receiver faults have little influence on coseismic Coulomb stress calculations,but other parameters can change the value and sign of the results in various degrees especially around the earthquake rupture plane.Therefore the uncertainty analysis of static Coulomb stress change induced by earthquake should be taken into consideration in the earthquake hazard analysis.
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| 关 键 词： | Coulomb stress Sensitivity analysis Active fault The MS8.0 Wenchuan earthquake |
| 收稿时间： | 2010/5/31 0:00:00 |
Uncertainty Analysis of Static Coulomb Stress Change Induced by Earthquake—A Case Study on the 2008 M_S8.0 Wenchuan Earthquake |
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| Wang Liwei and Chen Qifu.Uncertainty Analysis of Static Coulomb Stress Change Induced by Earthquake—A Case Study on the 2008 M_S8.0 Wenchuan Earthquake[J].Earthquake Research in China,2012,26(1):33-46. |
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| Authors: | Wang Liwei and Chen Qifu |
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| Institution: | 1) Institute of Earthquake Science, China Earthquake Administration, Beijing 100036 , China ; 2) Earthquake Administration of Guangdong Province, Guangzhou 510070 , China;1) Institute of Earthquake Science, China Earthquake Administration, Beijing 100036 , China ; 3) Key Laboratory of the Earth's Deep Interior, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029 , China |
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| Abstract: | Static Coulomb stress change induced by earthquake slip is frequently used to explain earthquake activities and aftershock distribution. However, some parameters for the Coulomb stress calculation are unable to be well constrained from laboratory experiments and field observations. Different parameters may directly affect the pattern of static Coulomb stress. The static Coulomb stress changes induced by the Wenchuan earthquake calculated by six research groups are not consistent with each other. To investigate how the parameters affect the calculation results, we change the parameters in turn through modeling and compare the results of different calculation parameters. We find that gravity, position and strike of receiver faults have little influence on coseismic Coulomb stress calculations, but other parameters can change the value and sign of the results in various degrees especially around the earthquake rupture plane. Therefore the uncertainty analysis of static Coulomb stress change induced by earthquake should be taken into consideration in the earthquake hazard analysis. |
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| Keywords: | Coulomb stress Sensitivity analysis Active fault The MS8 0 Wenchuan earthquake |
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