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The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards
Cui, Peng1,2; Chen, Xiao-Qing1,2; Zhu, Ying-Yan1,2; Su, Feng-Huan1,2; Wei, Fang-Qiang1,2; Han, Yong-Shun1,2; Liu, Hong-Jiang1,2; Zhuang, Jian-Qi1,2
通讯作者Cui, Peng
2011
发表期刊NATURAL HAZARDS
ISSN0921-030X
卷号56期号:1页码:19-36
文章类型Article
摘要On Monday, May 12, 2008, a devastating mega-earthquake of magnitude 8.0 struck the Wenchuan area, northwestern Sichuan Province, China. The focal mechanism of the earthquake was successive massive rock fracturing 15 km in depth at Yingxiu. Seismic analysis confirms that the major shock occurred on the Beichuan-Yingxiu Fault and that aftershocks rapidly extended in a straight northeast-southeast direction along the Longmenshan Fault zone. Fatalities approaching a total of 15,000 occurred, with a significant number resulting from four types of seismically triggered geohazards-rock avalanches and landslides, landslide-dammed lakes ("earthquake lakes"), and debris flows. China Geological Survey has identified 4,970 potentially risky sites, 1,701 landslides, 1,844 rock avalanches, 515 debris flows, and 1,093 unstable slopes. Rock avalanches and landslides caused many fatalities directly and disrupted the transportation system, extensively disrupting rescue efforts and thereby causing additional fatalities. Landslide-dammed lakes not only flooded human habitats in upstream areas but also posed threats to potentially inundated downstream areas with large populations. Debris flows become the most remarkable geohazards featured by increasing number, high frequency, and low triggering rainfall. Earthquake-triggered geohazards sequentially induced and transformed to additional hazards. For example, debris flows occurred on rock avalanches and landslides, followed by landslide-dammed lakes, and then by additional debris flows and breakouts of the landslide-dammed lakes and downstream flooding. Earthquake-induced geohazards occurred mainly along the fault zone and decreased sharply with distance from the fault. It can be anticipated that post-earthquake geohazards, particularly for debris flows, will continue for 5-10 years and even for as long as 20 years. An integrated strategy of continuing emergency response and economic reconstruction is required. The lesson from Wenchuan Earthquake is that the resulted geohazards may appear in large number in active fault regions. A plan for geohazard prevention in the earthquake-active mountainous areas is needed in advance.
关键词Wenchuan Earthquake Geohazards Avalanches Landslides Dammed Lakes/earthquake Lakes Debris-flows
WOS标题词Science & Technology ; Physical Sciences
DOI10.1007/s11069-009-9392-1
研究领域[WOS]Geology ; Meteorology & Atmospheric Sciences ; Water Resources
收录类别SCI
语种英语
WOS类目Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS记录号WOS:000286630600002
项目资助者State Key fundamental Research Program (973) project(2008CB425802)
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被引频次:132[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.imde.ac.cn/handle/131551/10577
专题山地灾害与地表过程重点实验室
作者单位1.CAS, Key Lab Mt Hazards & Earth Surface Proc, Chengdu, Peoples R China
2.CAS, Inst Mt Hazards & Environm, Chengdu, Peoples R China
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GB/T 7714
Cui, Peng,Chen, Xiao-Qing,Zhu, Ying-Yan,et al. The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards[J]. NATURAL HAZARDS,2011,56(1):19-36.
APA Cui, Peng.,Chen, Xiao-Qing.,Zhu, Ying-Yan.,Su, Feng-Huan.,Wei, Fang-Qiang.,...&Zhuang, Jian-Qi.(2011).The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards.NATURAL HAZARDS,56(1),19-36.
MLA Cui, Peng,et al."The Wenchuan Earthquake (May 12, 2008), Sichuan Province, China, and resulting geohazards".NATURAL HAZARDS 56.1(2011):19-36.
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