| 九江—瑞昌地区显著地震动态库仑破裂应力变化分析 |
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| 引用本文： | 董非非,袁丽文,邓辉,汤兰荣,郭雨帆,查小惠,罗丽.九江—瑞昌地区显著地震动态库仑破裂应力变化分析[J].地震学报,2019,41(4):494-501. |
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| 作者姓名： | 董非非 袁丽文 邓辉 汤兰荣 郭雨帆 查小惠 罗丽 |
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| 作者单位： | 中国南昌 330096 江西省地震局;中国福州 350003 福建省地震局 |
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| 摘 要： | 为了探究九江—瑞昌地区内的地震活动是否存在动态应力触发关系，本文选用多层黏弹性介质模型，计算了2005年九江—瑞昌MS5.7地震和2011年瑞昌—阳新MS4.6地震产生的动态库仑破裂应力变化。结果显示:九江—瑞昌MS5.7地震产生的动态库仑破裂应力变化，能触发其北东方向的53次地震；瑞昌—阳新MS4.6地震发生后15天内，小震活动增强区及九江—瑞昌MS5.7地震震源区的多次地震活动，可能与其动态应力触发作用有关。
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| 关 键 词： | 九江-瑞昌MS5.7地震 瑞昌—阳新MS4.6地震 动态库仑破裂应力变化 应力触发 |
| 收稿时间： | 2019-03-18 |
Dynamic Coulomb failure stress changes caused by significant earthquakes in Jiujiang-Ruichang region |
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| Affiliation: | 1.Jiangxi Earthquake Agency，Nanchang 330096，China2.Fujian Earthquake Agency，Fuzhou 350003，China |
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| Abstract: | In order to explore whether there was a dynamic stress trigger relationship between seismic activities in Jiujiang-Ruichang region, this paper calculated the dynamic Coulomb failure stress （CFS） changes caused by the 2005 MS5.7 Jiujiang-Ruichang earthquake and 2011 MS4.6 Ruichang-Yangxin earthquake based on the multi-layer viscoelastic medium model. The results show that the dynamic CFS changes caused by the Jiujiang-Ruichang MS5.7 earthquake had a triggering effect on the occurrence of 53 earthquakes in the northeast direction. Within 15 days after the occurrence of the Ruichang-Yangxin MS4.6 earthquake, the multiple events in the triggered region and the source region of the Jiujiang-Ruichang MS5.7 earthquake were all subjected to the triggering effect of dynamic CFS change caused by the MS4.6 earthquake. |
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