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Study of the Reservoir-induced Hujiaping M_S4.1 Earthquake in the Three Gorges Dam Area

Weihua Zhang

Open publisher page 5 citations

Abstract

On the base of data collection and on-the-spot investigation,this paper studies some characteristics of the Hujiaping MS4.1 earthquake on 22 November,2008 in Guizhou township,Zigui county,Hubei province,and the geology-hydrogeology condition and earthquake active background in the area.The earthquake disaster are investigated and analysed.Some scientific problems on earthquake precursors and causes of the earthquake are discussed.In our opinion,the Hujiaping MS4.1 earthquake is a reservoir-induced earthquake belonging to tectonic type,induced by reservoir water-loading and water infiltration along the Xiannvshan fault,and there are some indications that the cause of earthquake possibly relates to the 2008 Wenchuan earthquake influence on the stress field of this region.

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What this paper is about

On the base of data collection and on-the-spot investigation,this paper studies some characteristics of the Hujiaping MS4.1 earthquake on 22 November,2008 in Guizhou township,Zigui county,Hubei province,and the geology-hydrogeology condition and earthquake active background in the area.The earthquake disaster are investigated and analysed.Some scientific problems on earthquake precursors and causes of the earthquake are discussed.In our opinion,the Hujiaping MS4.1 earthquake is a reservoir-induced earthquake belonging to tectonic type,induced by reservoir water-loading and water infiltration along the Xiannvshan fault,and there are some indications that the cause of earthquake possibly relates to the 2008 Wenchuan earthquake influence on the stress field of this region.

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Available abstract

On the base of data collection and on-the-spot investigation,this paper studies some characteristics of the Hujiaping MS4.1 earthquake on 22 November,2008 in Guizhou township,Zigui county,Hubei province,and the geology-hydrogeology condition and earthquake active background in the area.The earthquake disaster are investigated and analysed.Some scientific problems on earthquake precursors and causes of the earthquake are discussed.In our opinion,the Hujiaping MS4.1 earthquake is a reservoir-induced earthquake belonging to tectonic type,induced by reservoir water-loading and water infiltration along the Xiannvshan fault,and there are some indications that the cause of earthquake possibly relates to the 2008 Wenchuan earthquake influence on the stress field of this region.

Key concepts: Geology, Seismology, Seismic microzonation, Foreshock, Tectonics, Three gorges, Hydrogeology, Intraplate earthquake

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