Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 409243
Title Calibration and resolution effects on model performance for predicting shallow landslide locations in Taiwan
Author(s) Keijsers, J.G.S.; Schoorl, J.M.; Chang, K.T.; Chiang, S.H.; Claessens, L.F.G.; Veldkamp, A.
Source Geomorphology 133 (2011)3-4. - ISSN 0169-555X - p. 168 - 177.
Department(s) Land Degradation and Development
Land Dynamics
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) rainfall-induced landslides - physically-based model - soil redistribution - hazard assessment - dem resolution - uncertainty - sediment - patterns - terrain - region
Abstract In this paper we optimise the spatially explicit prediction of landslide hazard, landslide triggering and subsequent movement downslope of materials for a mountainous catchment in Taiwan. The location prediction is optimised by subsequently adding three location parameters: rainfall distribution, land-use classes and DEM derived slopes. Then the three most important model parameters are calibrated to find the best prediction for both stable and unstable areas. The landslides predicted by the LAPSUS-LS model are compared with a landslide inventory to validate the output. The optimal model settings for the calibration area are then applied to a validation area. Results show that model performance can be improved by adding the spatial distribution of rainfall and by stratifying according to land-use classes. Landslide prediction is better with fine resolution DEMs, mainly because the local topography is smoothed in coarser resolutions. Although in general the amount of landslides is over-predicted, the overall performance indicates that the model is able to capture the important factors determining landslide location. Additional spatially distributed data such as regolith or soil depth and regeneration rates of the legacy effect can further enhance the model's prediction.
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