Comparison of two landslide susceptibility assessments in the Champagne-Ardenne region (France). Den Eeckhaut M.V., Marre A., Poesen J. Comparison of two landslide susceptibility assessments in the Champagne-Ardenne region (France) (2010) Geomorphology, 115 (1-2), pp. 141-155. The vineyards of the Montagne de Reims are mostly planted on steep south-oriented cuesta fronts receiving a maximum of sun radiation. Due to the location of the vineyards on steep hillslopes, the viticultural activity is threatened by slope failures. This study attempts to better understand the spatial patterns of landslide susceptibility in the Champagne–Ardenne region by comparing a heuristic (qualitative) and a statistical (quantitative) model in a 1120 km² study area. The heuristic landslide susceptibility model was adopted from the Bureau de Recherches Géologiques et Minières, the GEGEAA – Reims University and the Comité Interprofessionnel du Vin de Champagne. In this model, expert knowledge of the region was used to assign weights to all slope classes and lithologies present in the area, but the final susceptibility map was never evaluated with the location of mapped landslides. For the statistical landslide susceptibility assessment, logistic regression was applied to a dataset of 291 'old' (Holocene) landslides. The robustness of the logistic regression model was evaluated and ROC curves were used for model calibration and validation. Access the paper: http://dx.doi.org/10.1016/j.geomorph.2009.09.042 Last Update: 05/07/2011
