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- W2297639056 abstract "Abstract. Landslides are geomorphologic and hydrologic phenomena, which produce a certain morphology, influenced by the slide/flow of the material downslope. Usually the distance of the movement of the material is greater than the width of the displaced material (especially for flows, but also the majority of the slides enter in the same category), the resulting landslides having the length bigger than the width. In some specific environments (monoclinic regions, with cuesta landforms) or some types of landslides (translational slides, bank failures, complex landslides), the distance of the movement is smaller than the width of the displaced mass, the resulting landslides having the length smaller than the width. When dealing with landslide inventories which contain both the classes of landslides presented above, the analysis of the length and width of landslides will be biased. To correct this aspect, I present an algorithm which uses both the geometry of the landslide polygon minimum oriented bounding box and a DEM of the landslide topography for identifying the long versus wide landslides, in a landslide inventory covering 131.1 km2 in Moldavian Plateau, Eastern Romania, and containing 1327 landslides (518 long and 809 wide). In a first step, the difference in elevation of the length and width of the minimum oriented bounding box is used to separate long from wide landslides (long landslides having the greatest elevation difference along the length of the bounding box). In a second step, the long landslides are checked if their length is greater than the slope length (estimated with a flow routing algorithm), in which case the landslide is labelled as wide. By using this approach the AUROC value for the classification of the two cases is 87.8%. An intensive review of the wrong classified cases is made, and discussions are included about the prospects of improving with further steps the approach, to reduce the number of misclassified cases." @default.
- W2297639056 created "2016-06-24" @default.
- W2297639056 creator A5022565696 @default.
- W2297639056 date "2016-03-15" @default.
- W2297639056 modified "2023-10-18" @default.
- W2297639056 title "Automatic landslide flow direction estimation based on the geometric processing of the bounding box and the geomorphometric analysis of DEMs" @default.
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- W2297639056 doi "https://doi.org/10.5194/nhess-2016-44" @default.
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