|本期目录/Table of Contents|

[1]解朝娣,王英楠,闫如玉,等.2014年四川康定MS6.3和MS5.8地震的应力触发研究*[J].地震研究,2021,44(01):9-14.
　XIE Chaodi,WANG Yingnan,YAN Ruyu,et al.Study on Stress Triggering of 2014 Kangding MS6.3 and MS5.8 Earthquakes[J].Journal of Seismological Research,2021,44(01):9-14.
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2014年四川康定MS6.3和MS5.8地震的应力触发研究*(PDF/HTML)

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:
44
期数:
2021年01期
页码:
9-14
栏目:
出版日期:
2021-01-15

文章信息/Info

Title:
Study on Stress Triggering of 2014 Kangding MS6.3 and MS5.8 Earthquakes
作者:
解朝娣1; 2; 王英楠1; 闫如玉1; 杨颖1; 李孟洋1; 于海英3; 刘本玉1
(1.云南大学 地球科学学院,云南 昆明 650091; 2.中国地震局地质研究所 地震动力学国家重点实验室,北京 100029; 3.上海市地震局,上海 200062)
Author(s):
XIE Chaodi1; 2; WANG Yingnan1; YAN Ruyu1; YANG Ying1; LI Mengyang1; YU Haiying3; LIU Benyu1
(1.School of Earth Sciences,Yunnan University,Kunming 650091,Yunnan,China)(2.State Key Laboratory of Earthquake Dynamics,Institute of Geology,China Earthquake Administration,Beijing 100029,China)(3.Shanghai Earthquake Agency,Shanghai 200062,China)
关键词:
康定地震;  库仑破裂应力变化;  地震触发;  断层相互作用
Keywords:
Kangding earthquake;  Coulomb failure stress change;  earthquake triggering;  fault interaction effect
分类号:
P315.7
DOI:
-
摘要:
以2014年四川康定MS6.3和MS5.8地震为研究对象,计算了2次主震在近场和周围断层造成的库仑破裂应力变化,研究主震与余震的触发关系,以及2次主震对周围断层施加的应力负荷作用。结果表明:2次主震的共同作用控制了后续地震活动的演化趋势,其中康定MS6.3地震产生的库仑破裂应力变化对后续余震事件的触发占主导作用。鲜水河断裂带南段和安宁河断裂带受到了一定的应力加载作用,未来地震活动的趋势可能会加强。
Abstract:
In this study,the problem of earthquake triggering is discussed by using the MS6.3 earthquake on Nov.22,2014 and the MS5.8 earthquake on Nov.25,2014 in Kangding,Sichuan Province.Firstly,based on the regional tectonic stress field in this area,we calculated the spatial distributions of static stress changes caused by the Kangding MS6.3 and MS5.8 earthquakes on the optimal fault planes,and studied the stress triggering effect of the main shock to the aftershocks.Furthermore,we analyzed the stress loading and unloading effects of the two main-shocks on the surrounding faults by calculating the Coulomb rupture stress changes on the surrounding faults.The results show that the joint action of the two main earthquakes controls the evolution trend of the subsequent seismicity.Moreover,the Coulomb failure stress change produced by the Kangding MS6.3 earthquake has a good correlation with the aftershocks,and the triggering effect on the subsequent events is dominant.In addition,the southern segment of the Xianshuihe fault and the Anninghe fault are subjected to certain stress loading by two earthquakes,and the seismic activity may be strengthened in the future.

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备注/Memo

备注/Memo:
收稿日期:2019-12-05
基金项目:国家自然科学基金(41964001)、地震动力学国家重点实验室开放基金(LED2019B04)和同济大学海洋地质国家重点实验室开放基金(MGK1827)联合资助.
更新日期/Last Update: 2021-01-15