Water System Responding to the Dextral Strike-Slipping of the Longmenshan Fault Zone in the Upper Min River Basin
详细信息
- 责任者：Chen Hao (College of Resources and Environmental Engineering ; Mianyang Normal University ; Mianyang 621000 ; China) ; Li Yong
- 刊名：Journal of Mountain Research
- 出版年：2013
- 卷期：31(2)
- 关键词：汶川地震2008 ; Wenchuan earthquake 2008 ; 岷江 ; Minjiang River ; 龙门山断裂带 ; Longmenshan Fault Zone
- 页码：p.211-217
- 图表：illus., 4 tables, 15 refs.
- 分类号：0500
- issnNo：ISSN1008-2786
- isbnNo：CN51-1516/P
摘要
The Wenchuan Ms8.0 earthquake was the latest regional tectonic activity in the upper Min River basin.The horizontal displacement of Min River channel reached 0.8±0.2 m for dextral strike slip movement of Beichuan-Yingxiu fault,and the synchronous displacement of the river terrace in the southwest side of Min River channel reaches 0.6±0.1 m.The horizontal movement of the main and tributary of Min River were caused by the strike slipping in historical earthquakes.The dextral strike-slip rate of faults was calculated according to the horizontal slip amount and initial formation time of water system.The strike-slip rate of Wenchan-Maoxian fault is 1-1.4 mm/a,the strike-slip rate of Beichuan-Yingxiu fault is 0.94mm/a,the strike-slip rate of Pengxian-Guanxian fault is 0.71 mm/a.The intensity of dextral strike slipping of main faults in the Longmen Mountain were decreased from northwest to southeast.
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