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Identification of landslide spatial distribution and their types along the Riviere Frorse Drainage Basin triggered by the earthquake in Haiti on 12 January 2010

文献类型： 外文期刊

作者： Zhao, Jinling 1 ; Liu, Chuang 1 ; Lv, Tingting 1 ; Dai, Lijun 1 ;

作者机构： 1.Chinese Acad Sci, LREIS, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China

2.Beijing Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China

3.Chinese Acad Sci, Inst Remote Sensing Applicat, Beijing 100101, Peoples R China

关键词： Earthquake;Landslide types;Haiti;Riviere Frorse Drainage Basin;Object-oriented classification

期刊名称：DISASTER ADVANCES （ 影响因子：2.272； 五年影响因子：1.886 ）

ISSN： 0974-262X

年卷期： 2012 年 5 卷 1 期

页码：

收录情况： SCI

摘要： As secondary effects, a series of landslides were triggered by the earthquake that occurred in Haiti on January 12, 2010. In this research, Riviere Frorse drainage basin was selected as the study area where the landslides were very concentrated and caused very serious damage. Due to the formation characteristics of a landslide, obvious changes of vegetation and texture characteristics between pre- and post-earthquake make it possible to identify the landslides in the high-resolution remotely sensed images. First, the Normalized Difference Vegetation Index (NDVI) images of pre- and post-earthquake were derived and the NDVI difference image was computed to identify the potential landslides. Then, multi-temporal images (pre- and post-earthquake, their resolution grange from 0.41 m to 1.0 m) from Google Earth and the Digital Elevation Model (DEM) as well as its derivative slope were used to find out the landslides and mark the spatial sites. Finally, in order to identify and calculate the landslide acreage, the object-oriented classification method was mainly used by using the pre-earthquake World View-2 images on August, 2009 (whose spatial resolution is 0.46 m) and the post-earthquake GeoEye-1 (whose spatial resolution is 0.41 m) images on January 13, 2010. As a result, 165 landslides were interpreted and four types were specified: 98 new landslides (54,132 m(2)), 35 expanded landslides (40,315 m(2)), 24 no obviously changed landslides (186,962 m(2)) and 8 no completely recovered landslides (5,618 m(2)).

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