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

TitleAutomatic delineation of geomorphological slope units with r.slopeunits v1.0 and their optimization for landslide susceptibility modeling
Publication TypeJournal Article
Year of Publication2016
AuthorsAlvioli, M., I. Marchesini, P. Reichenbach, M. Rossi, F. Ardizzone, F. Fiorucci, and F. Guzzetti
Refereed DesignationRefereed
JournalGeoscientific Model Development
Volume9
Start Page3975
Date Published11/2016
Type of ArticleModel description paper
ISSN 1991-959
Keywordslandslides, mapping units, optimization, slope units
Abstract

Automatic subdivision of landscapes into terrain units remains a challenge. Slope units are terrain units bounded by drainage and divide lines, but their use in hydro-logical and geomorphological studies is limited because of the lack of reliable software for their automatic delineation. We present the r.slopeunits software for the automatic delineation of slope units, given a digital elevation model and a few input parameters. We further propose an approach for the selection of optimal parameters controlling the terrain subdivision for landslide susceptibility modeling. We tested the software and the optimization approach in central Italy, where terrain, landslide, and geo-environmental informationwas available. The software was capable of capturing the variability of the landscape and partitioning the study area into slope units suited for landslide susceptibility modeling and zonation. We expect r.slopeunits to be used in different physiographical settings for the production of reliable and reproducible landslide susceptibility zonations.

URLhttps://www.geosci-model-dev.net/9/3975/2016/
DOI10.5194/gmd-9-3975-2016
Alternate JournalGeosci. Mod. Dev.
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