Methods for detecting channel bed surface changes in a mountain torrent – experiences from the Dorfbach torrent
Bibliographic Data
| ID | 18975367 |
|---|---|
| Authors | C Willi (0000-0002-0981-5068, University of Bern, corresponding author), Christoph Graf (0000-0003-1444-8458, Swiss Federal Institute for Forest, Snow and Landscape Research, corresponding author), Y Deubelbeiss (Swiss Federal Institute for Forest, Snow and Landscape Research, corresponding author), M Keiler (0000-0001-9168-023X, University of Bern, corresponding author) |
| Year | 2015 |
| Volume | 70 |
| Issue | 4 |
| Pages | 265-279 |
| Publication date | 2015-10-06 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Geographica Helvetica (JOURNAL) |
| Journal identifiers | ISSN: 0016-7312 • E-ISSN: 2194-8798 |
| Publisher | Copernicus GmbH (PUBLISHER • DE) |
| DOI | 10.5194/gh-70-265-2015 |
| OpenAlex | W2201586297 |
| Language | EN |
| Citations received | 1 |
| References cited | 32 |
The erosion of and depositions on channel bed surfaces are instrumental to understanding debris flow processes. We present an overview of existing field methods and highlight their respective advantages and disadvantages. Terrestrial laser scanning (TLS), airborne laser scanning (ALS), erosion sensors, cross sections (CS) and geomorphological mapping are compared. Additionally, two of these approaches (i.e. TLS and CS) are tested and applied in the channel reaches of the torrent catchments. The results of the comparison indicate that the methods are associated with variable temporal and spatial resolution as well as data quality and invested effort. TLS data were able to quantify small-scale variations of erosion and deposition volumes. While the same changes could be detected with CS and geomorphological mapping, it was only possible with lower precision and coarser spatial resolution. The study presents a range of potential methods that can be applied accordingly to address the objectives and to support the analyses of specific applications. The availability of erosion data, acquired mainly by TLS and ALS, in combination with debris-flow monitoring data, provides promising sources of information to further support torrent risk management
Cartography · Channel (broadcasting) · Debris · Debris flow · Erosion · Geography · Geomorphology · Laser · Laser scanning · Remote sensing · Scale (ratio) · Computer Science · Fire effects on ecosystems · Geology · Hydrology and Sediment Transport Processes · Landslides and related hazards
| Unique citing works | 1 |
|---|---|
| Citations per year | 0,09 |
| Citation span | 2015 - 2015 (1) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 1 |