| 汶川地震诱发滑坡灾害的数量与面积 |
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| 引用本文： | 许冲,戴福初,姚鑫.汶川地震诱发滑坡灾害的数量与面积[J].科技导报(北京),2009,27(11). |
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| 作者姓名： | 许冲 戴福初 姚鑫 |
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| 作者单位： | 许冲,戴福初,XU Chong,DAI Fuchu(中国科学院地质与地球物理研究所,北京,100029);姚鑫,YAO Xin(中国地质科学院地质力学研究所,北京,100081)
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| 摘 要： | 2008年5月12日14时28分,以四川省汶川县为震中的地区发生了Ms 8.0级大地震,地震造成了巨大的人员伤亡与财产损失,还诱发了数以万计的滑坡灾害.本研究基于震后航空像片与多源卫星遥感影像,辅以实地调查方法,在GIS平台支持下,对汶川地震诱发的滑坡灾害进行了解译调查工作.截至本文完成,在约48 678 km2的滑坡影响区域内,圈定了48 007个地震诱发滑坡灾害,覆盖面积约711.8 km2,这一数据远高于目前已经发表的结果.解译调查结果表明,汶川地震诱发滑坡类型多样,多沿发震断裂密集分布,形成多处地震堰塞湖.考虑到少部分地区遥感影像质量差且人员无法到达,估计汶川地震实际诱发滑坡数量超过50 000个,覆盖面积约达750 km2.全面客观地统计汶川地震诱发滑坡的数量与面积,对进一步研究地震滑坡空间分布、机理、评价预测,以及反推地震特征有着十分重要的意义.
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| 关 键 词： | 汶川地震 滑坡 受灾面积 遥感图像解译 |
Incidence Number and Affected Area of Wenchuan Earthquake-induced Landslides |
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| XU Chong,DAI Fuchu,YAO Xin.Incidence Number and Affected Area of Wenchuan Earthquake-induced Landslides[J].Science & Technology Review,2009,27(11). |
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| Authors: | XU Chong DAI Fuchu YAO Xin |
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| Institution: | XU Chong1,DAI Fuchu1,YAO Xin2 1. Institute of Geology , Geophysics,Chinese Academy of Sciences,Beijing 100029,China 2. Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing 100081,China |
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| Abstract: | On May 12, 2008 at 14:28 (local time), a catastrophic earthquake with the surface wave magnitude of Ms 8.0 struck the Sichuan Province of China. With the help of aerial photographs, multi-source remote sensing imageries and field investigations, slope failures and catastrophic landslides induced by the ground motion were extensively mapped. The results show that the Wenchuan earthquake has triggered 48 007 landslides, covering a total plane area of about 711.8 km2 over a broad area of about 48 678 km2. The ... |
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| Keywords: | Wenchuan earthquake landslide afflicted area Interpretation of remote sensing image |
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