|本期目录/Table of Contents|

[1]李丹宁,高 洋,朱慧宇,等.2014年云南景谷MS6.6地震序列双差定位及震源机制解特征研究*[J].地震研究,2017,40(03):465-473.
　LI Danning,GAO Yang,ZHU Huiyu,et al.Research on Double-difference Relocations and Focal Mechanism Solutions of the 2014 Yunnan Jinggu MS6.6 Earthquake Sequence[J].Journal of Seismological Research,2017,40(03):465-473.
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2014年云南景谷MS6.6地震序列双差定位及震源机制解特征研究*(PDF/HTML)

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:
40
期数:
2017年03期
页码:
465-473
栏目:
自投稿专栏
出版日期:
2017-07-20

文章信息/Info

Title:
Research on Double-difference Relocations and Focal Mechanism Solutions of the 2014 Yunnan Jinggu MS6.6 Earthquake Sequence
作者:
李丹宁1; 高 洋1; 朱慧宇2; 秦 敏1; 张会苑1; 徐 彦3
(1.云南省地震局,云南 昆明 650224; 2.中国科技大学,安徽 合肥 230026; 3.云南大学 资源环境与地球科学学院,云南 昆明 650091)
Author(s):
LI Danning1; GAO Yang1; ZHU Huiyu2; QIN Min1; ZHANG Huiyuan1; XU Yan3
(1.Yunnan Earthquake Agency,Kunming 650224,Yunnan,China)(2.University of Science and Technology of China,Hefei 230026,Anhui,China)(3.School of Resource Environment and Earth Science,Yunnan University,Kunming 650091,Yunnan,China)
关键词:
景谷MS6.6地震;  波形互相关;  双差定位;  震源机制解
Keywords:
Jinggu MS6.6 earthquake;  waveform cross-correlation;  double-difference location;  focal mechanisms
分类号:
P315.72
DOI:
-
摘要:
结合波形互相关技术,运用双差定位方法对2014年景谷MS6.6地震及其强余震序列进行重定位。对序列中2.0≤ML≤5.0共730个事件重定位得到649个重定位结果。定位误差在EW向为18 m,NS向为19 m,深度方向为23 m。结果显示此次景谷地震序列主要沿2个优势方向展布:一个是主震发生后沿NW走向的无量山断裂西支(普文断裂)延长线呈长约20 km的带状分布,一个是12月6日MS5.8和M
Abstract:
Using the double-difference method that combined with waveform cross-correlation,we relocated the Jinggu MS6.6 and its 730 aftershocks with magnitude between 2 and 5 and finally obtained 649 relocated earthquakes,the statistical location error are 18 m in EW,19 m in NS and 23 m in depth direction,respectively.The aftershock sequence presents a zonal shape with lengths of 20km and along the west branch of Wuliangshan fault(Puwen fault).But two strong aftershocks sequence distribution direction has some transformation,mainly along the nearly NS with length of 10 km after the strong aftershocks with MS5.8 and MS5.9.This may be associated with fracture on the west side of NNE direction of the Lancang river fault and on the east side of NW direction of the west branch of Wuliangshan fault(Puwen fault),also may be related to segmental rupture or segmental activity of fault.Most earthquakes are predominately located between 6 km and 15 km.But the depth of the earthquake sequence has the tendency of a whole deeper distribution range are mainly concentrated in 9 km to 16 km a few days later.This indicates the complexity of the regional geological structure.Using full waveform simulation method to get the focal mechanism solution of MS≥3.5 earthquakes,the focal mechanism of the north earthquakes is consisted with the main shock.The strike of plane I of the south earthquakes have a trend towards NS.

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备注/Memo

备注/Memo:
收稿日期:2017-03-15
基金项目:测震台网青年骨干培养专项——2014年以来云南M6以上地震序列特征分析及震区构造活动性研究(20150426)、国家自然科学基金——小滇西地区发震断层及应力状态研究(41564003)和地震行业科研专项——应用互联网图像搜索引擎技术实现实时地震监测技术的研究(201408018)联合资助.

更新日期/Last Update: 2017-07-20