2013年云南香格里拉、德钦-四川得荣交界5.9级地震灾害及发震构造

杨捷; 曾佐勋; 李茂华; 房艳国; 谭朝爽; 吴世泽; 龚成

doi:10.3799/dqkx.2015.153

Volume 40 Issue 10

Oct. 2015

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Yang Jie, Zeng Zuoxun, Li Maohua, Fang Yanguo, Tan Zhaoshuang, Wu Shize, Gong Cheng, 2015. The Seismo-Geological Hazards and Seismogenic Structure of the 2013 Deqing-Derong 5.9 Earthquake. Earth Science, 40(10): 1701-1709. doi: 10.3799/dqkx.2015.153

Citation:

Yang Jie, Zeng Zuoxun, Li Maohua, Fang Yanguo, Tan Zhaoshuang, Wu Shize, Gong Cheng, 2015. The Seismo-Geological Hazards and Seismogenic Structure of the 2013 Deqing-Derong 5.9 Earthquake. Earth Science, 40(10): 1701-1709. doi: 10.3799/dqkx.2015.153

Citation:

Yang Jie, Zeng Zuoxun, Li Maohua, Fang Yanguo, Tan Zhaoshuang, Wu Shize, Gong Cheng, 2015. The Seismo-Geological Hazards and Seismogenic Structure of the 2013 Deqing-Derong 5.9 Earthquake. Earth Science, 40(10): 1701-1709. doi: 10.3799/dqkx.2015.153

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The Seismo-Geological Hazards and Seismogenic Structure of the 2013 Deqing-Derong 5.9 Earthquake

doi: 10.3799/dqkx.2015.153

Yang Jie^{1, 2
,},
Zeng Zuoxun^{1, 3, 4
,
,},
Li Maohua²,
Fang Yanguo²,
Tan Zhaoshuang²,
Wu Shize²,
Gong Cheng²

1.
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China
2.
Three Gorges Geotechnical Consultants Co., Ltd., Wuhan 430074, China
3.
Huazhong Tectonomechanical Research Center, Wuhan 430074, China
4.
Three Gorges Research Center for Geo-Hazard, Ministry of Education, China University of Geosciences (TGRC), Wuhan 430074, China

Received Date: 2014-12-15
Publish Date: 2015-10-15

Abstract

Abstract

On August 28st and 31st, 2013, two earthquakes with magnitude of 5.1 and 5.9 occurred on the boundary between Deqing County, Yunnan Province, and Derong County, Sichuan Province. In order to evaluate the damage of the earthquake, we investigated on lots of seismo-geological hazards induced by the earthquakes and conducted the field investigation of geological structural section about the fractures near the epicenter. Those two earthquakes successively occurring at the adjacent position led to the intensity of this earthquake higher than that of the same magnitude. The maximum intensity of the 5.9 earthquake is Ⅷ degree and the perceptible area is relatively large. The macroseismic epicenter is about 5.1km from the 5.1 microseismic epicenter is roughly located at the middle of the two microseismic epicenter (28.20°N, 99.36°E). The isoseismic line is shaped as an anomalous ellipse and the orientation of its long axis is NW-SE orientation along the Deqin-Zhongdian fault. According to the field investigation of geological structural section about the fractures near the epicenter, the focal mechanism solution data and the special distribution characteristics of the aftershocks, we preliminary infer that the seismogenic structure is Deqin-Zhongdian fault and the Deqing-Derong 5.9 earthquake is a normal fault type earthquake characterized by strike-slip.
- Deqing-Derong earthquake,
- seismo-geological hazards,
- Deqin-Zhongdian fault,
- seismogenic structure,
- earthquake

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References(18)

References

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