华南地震2017，Vol.37Issue(1)：80-88,9.DOI:10.13512/j.hndz.2017.01.013
2013年香格里拉-得荣Ms5.9级地震震中区地质地貌调查
Geological and Geomorphic Investigation in the Epicenter Area of the Shangrila-Dêrong Ms5.9 Earthquake in 2013
王明明 1刘韶 2史丙新 1黄成程1
作者信息
- 1. 四川省地震局工程地震研究院,成都610041
- 2. 四川赛思特科技有限责任公司,成都610041
- 折叠
摘要
Abstract
On August 28th and 31st,2013,there are 2 major earthquakes with magnitudes of Ms 5.2 and Ms 5.9 respectively occurred in succession at the boundary region among Dêrong county of Sichuan province,Dêqên county and Shangrila county of Yunnan province and followed with a series of afiershocks.The distance between these 2 epicenters are about 10 km.The Dêqên-Zhongdian-Daju fault was the seismogenic structure for the 2 earthquakes,which located in the northwestern boundary of the Sichuan-Yunnan rhombic block.Based on field investigation in the epicenter area,associated with focal mechanisms result of the Shangrila-Dêrong earthquake swarm sequence and the Quaternary active research,the paper revealed and discussed the activity and the behavior characteristics of Dêqên-Zhongdian-Daju fault.This fault performed as high angle thrust along the Waka town to the Tuigai village,which was different from the focal mechanisms result of the Shangrila-Dêrong earthquake swarm sequence,revealing the tensile stress environment in this region,and also different from properties of the dextral strike slip of the Dêqên-Zhongdian-Daju fault.This may be caused by the local effect of strike slip fault when approaching to near-surface.However,it could not represent general kinematics of the fault.The Dêqên-Zhongdian-Daju fault was a Holocene active fault,whose overall performance was obvious dextral strike slip.关键词
德钦-中甸-大具断裂/香格里拉-得荣地震/运动特征/川滇菱形块体Key words
Dêqên-Zhongdian-Daju faul/Shangrila-Dêrong earthquake/Movement characteristics/Sichuan-Yunnan rhombic block分类
天文与地球科学引用本文复制引用
王明明,刘韶,史丙新,黄成程..2013年香格里拉-得荣Ms5.9级地震震中区地质地貌调查[J].华南地震,2017,37(1):80-88,9.
