Articles | Volume 9, issue 11
https://doi.org/10.5194/gmd-9-3975-2016
https://doi.org/10.5194/gmd-9-3975-2016
Model description paper
 | 
09 Nov 2016
Model description paper |  | 09 Nov 2016

Automatic delineation of geomorphological slope units with r.slopeunits v1.0 and their optimization for landslide susceptibility modeling

Massimiliano Alvioli, Ivan Marchesini, Paola Reichenbach, Mauro Rossi, Francesca Ardizzone, Federica Fiorucci, and Fausto Guzzetti

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Cited articles

Alvioli, M., Guzzetti, F., and Rossi, M.: Scaling properties of rainfall-induced landslides predicted by a physically based model, Geomorphology, 213, 38–47, https://doi.org/10.1016/j.geomorph.2013.12.039, 2014.
Aplin, P. and Smith, G.: Advances in object-based image classification, in: Remote Sensing and Spatial Information Sciences XXXVII, Vol. B7 of The International Archives of the Photogrammetry, 725–728, Bejing, China, 2008.
Brabb, E. E.: Innovative approaches to landslide hazard mapping, in: Proceedings 4th International Symposium on Landslides (Toronto), Vol. 1, 307–324, Canadian geotechnical Society, Toronto, 1984.
Budimir, M., Atkinson, P., and Lewis, H.: A systematic review of landslide probability mapping using logistic regression, Landslides, 12, 419–436, https://doi.org/10.1007/s10346-014-0550-5, 2015.
Cardinali, M., Antonini, G., Reichenbach, P., and Fausto, G.: Photo-geological and landslide inventory map for the Upper Tiber River basin – CNR GNDCI, publication no. 2116, scale 1 : 100,000, available at: http://geomorphology.irpi.cnr.it/publications/repository/public/maps/UTR-data.jpg/ (last access: 3 November 2016), 2001.
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Short summary
Slope units are morphological mapping units bounded by drainage and divide lines that maximize within-unit homogeneity and between-unit heterogeneity. We use r.slopeunits, a software for the automatic delination of slope units. We outline an objective procedure to optimize the software input parameters for landslide susceptibility (LS) zonation. Optimization is achieved by maximizing an objective function that simultaneously evaluates terrain aspect segmentation quality and LS model performance.
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