Automatic delineation of geomorphological slope units with <tt>r.slopeunits v1.0</tt> and their optimization for landslide susceptibility modeling
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 hydrological and geomorphological studies is limited because of the lack of reliable software for their automatic delineation. We presen...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2016-11-01
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| Series: | Geoscientific Model Development |
| Online Access: | https://www.geosci-model-dev.net/9/3975/2016/gmd-9-3975-2016.pdf |
| Summary: | 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 hydrological and geomorphological studies is limited because of the
lack of reliable software for their automatic delineation. We present the
<tt>r.slopeunits</tt> 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 information was 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 <tt>r.slopeunits</tt> to be used in different
physiographical settings for the production of reliable and reproducible
landslide susceptibility zonations. |
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| ISSN: | 1991-959X 1991-9603 |