Statistical modelling of Europe-wide landslide susceptibility using limited landslide inventory data

被引:0
|
作者
M. Van Den Eeckhaut
J. Hervás
C. Jaedicke
J.-P. Malet
L. Montanarella
F. Nadim
机构
[1] Joint Research Centre (JRC),Institute for Environment and Sustainability
[2] European Commission,Norwegian Geotechnical Institute (NGI)
[3] International Centre for Geohazards (ICG),Institut de Physique du Globe de Strasbourg, CNRS UMR 7516
[4] Université de Strasbourg / EOST,undefined
来源
Landslides | 2012年 / 9卷
关键词
Susceptibility map; Logistic regression modelling; Limited landslide inventory; Continental scale; Validation;
D O I
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中图分类号
学科分类号
摘要
In many regions, the absence of a landslide inventory hampers the production of susceptibility or hazard maps. Therefore, a method combining a procedure for sampling of landslide-affected and landslide-free grid cells from a limited landslide inventory and logistic regression modelling was tested for susceptibility mapping of slide- and flow-type landslides on a European scale. Landslide inventories were available for Norway, Campania (Italy), and the Barcelonnette Basin (France), and from each inventory, a random subsample was extracted. In addition, a landslide dataset was produced from the analysis of Google Earth images in combination with the extraction of landslide locations reported in scientific publications. Attention was paid to have a representative distribution of landslides over Europe. In total, the landslide-affected sample contained 1,340 landslides. Then a procedure to select landslide-free grid cells was designed taking account of the incompleteness of the landslide inventory and the high proportion of flat areas in Europe. Using stepwise logistic regression, a model including slope gradient, standard deviation of slope gradient, lithology, soil, and land cover type was calibrated. The classified susceptibility map produced from the model was then validated by visual comparison with national landslide inventory or susceptibility maps available from literature. A quantitative validation was only possible for Norway, Spain, and two regions in Italy. The first results are promising and suggest that, with regard to preparedness for and response to landslide disasters, the method can be used for urgently required landslide susceptibility mapping in regions where currently only sparse landslide inventory data are available.
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页码:357 / 369
页数:12
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