Monitoring the crisis of a rock glacier with repeated UAV surveys
Bibliographic Data
| ID | 2645043 |
|---|---|
| Authors | Sebastián Vivero (0000-0002-1813-9575), Christophe Lambiel |
| Year | 2019 |
| Volume | 74 |
| Issue | 1 |
| Pages | 59-69 |
| Publication date | 2019-02-15 |
| 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-74-59-2019 |
| OpenAlex | W2914832712 |
| Language | EN |
| Citations received | 1 |
| References cited | 55 |
In this study, rapid topographic changes and high creeping rates caused by the destabilisation of an active rock glacier in a steep mountain flank were investigated in detail with five unmanned aerial vehicle (UAV) surveys between June 2016 and September 2017. State-of-the-art photogrammetric techniques were employed to derived high-density point clouds and high-resolution orthophoto mosaics from the studied landform. The accuracy of the co-registration of subsequent point clouds was carefully examined and adjusted based on comparing stable areas outside the rock glacier, which minimised 3-D alignment errors to a mean of 0.12 m. Elevation and volumetric changes in the destabilised rock glacier were quantified over the study period. Surface kinematics were estimated with a combination of image correlation algorithms and visual inspection of the orthophoto mosaics. Between June 2016 and September 2017, the destabilised part of the rock glacier advanced up to 60-75 m and mobilised a volume of around 27 000 m3 of material which was dumped over the lower talus slope. This study has demonstrated a robust and customisable monitoring approach that allows a detailed study of rock glacier geometric changes during a crisis phase
Elevation (ballistics · Geodesy · Geography · Geometry · Geomorphology · Glacier · Landform · Landslide · Orthophoto · Photogrammetry · Physical geography · Point cloud · Remote sensing · Rock glacier · Rockfall · 3D Surveying and Cultural Heritage · Climate change and permafrost · Computer Science · Cryospheric studies and observations · Artificial Intelligence · Geology
| Citations per year | 0.17 |
|---|---|
| Citation span | 2020 - 2020 (1) |
| Highly cited | No |