Geographica Helvetica
Geographica Helvetica
GH
Articles | Volume 70, issue 4
Articles | Volume 70, issue 4
https://doi.org/10.5194/gh-70-265-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/gh-70-265-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 70, issue 4
Standard article
 | 
06 Oct 2015
Standard article |  | 06 Oct 2015

Methods for detecting channel bed surface changes in a mountain torrent – experiences from the Dorfbach torrent

C. Willi, C. Graf, Y. Deubelbeiss, and M. Keiler

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Short summary
The erosion of and depositions on channel bed surfaces are instrumental to understanding debris flow processes. We present different methods and highlight their pro and cons. Terrestrial and airborne laser scanning, erosion sensors, cross sections and geomorphological mapping are compared. Two of these approaches are tested and applied in a torrent. The results indicate that the methods are associated with variable temporal and spatial resolution as well as data quality and invested effort.
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Theme issue
Mapping, measuring and modeling in geomorphology