Large landslides cluster at the margin of a deglaciated mountain belt
- Landslides in deglaciated and deglaciating mountains represent a major hazard, but their distribution at the spatial scale of entire mountain belts has rarely been studied. Traditional models of landslide distribution assume that landslides are concentrated in the steepest, wettest, and most tectonically active parts of the orogens, where glaciers reached their greatest thickness.
However, based on mapping large landslides (>0.9 km(2)) over an unprecedentedly large area of Southern Patagonia (similar to 305,000 km(2)), we show that the distribution of landslides can have the opposite trend.
We show that the largest landslides within the limits of the former Patagonian Ice Sheet (PIS) cluster along its eastern margins occupying lower, tectonically less active, and arid part of the Patagonian Andes. In contrast to the heavily glaciated, highest elevations of the mountain range, the peripheral regions have been glaciated only episodically, leaving a larger volume of unstable sedimentary and volcanic rocks that are subject to ongoingLandslides in deglaciated and deglaciating mountains represent a major hazard, but their distribution at the spatial scale of entire mountain belts has rarely been studied. Traditional models of landslide distribution assume that landslides are concentrated in the steepest, wettest, and most tectonically active parts of the orogens, where glaciers reached their greatest thickness.
However, based on mapping large landslides (>0.9 km(2)) over an unprecedentedly large area of Southern Patagonia (similar to 305,000 km(2)), we show that the distribution of landslides can have the opposite trend.
We show that the largest landslides within the limits of the former Patagonian Ice Sheet (PIS) cluster along its eastern margins occupying lower, tectonically less active, and arid part of the Patagonian Andes. In contrast to the heavily glaciated, highest elevations of the mountain range, the peripheral regions have been glaciated only episodically, leaving a larger volume of unstable sedimentary and volcanic rocks that are subject to ongoing slope instability.…
| Author details: | Tomáš PánekORCiDGND, Michal BřežnýORCiD, Stephan HarrisonORCiD, Elisabeth SchönfeldtORCiDGND, Diego WinocurORCiD |
|---|---|
| DOI: | https://doi.org/10.1038/s41598-022-09357-9 |
| ISSN: | 2045-2322 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/35383218 |
| Title of parent work (English): | Scientific reports |
| Publisher: | Macmillan Publishers Limited, part of Springer Nature |
| Place of publishing: | London |
| Publication type: | Article |
| Language: | English |
| Date of first publication: | 2022/04/05 |
| Publication year: | 2022 |
| Release date: | 2024/05/30 |
| Volume: | 12 |
| Issue: | 1 |
| Article number: | 5658 |
| Number of pages: | 13 |
| Funding institution: | Czech Science Foundation [19-16013S]; international research training; group StRATEGy (Surface Processes, Tectonics and Georesources: The; Andean foreland basin of Argentina) [STR 373/34-1]; German Research; Foundation (DFG); State of Brandenburg, Germany |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Umweltwissenschaften und Geographie |
| DDC classification: | 5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften |
| Peer review: | Referiert |
| Publishing method: | Open Access / Gold Open-Access |
| DOAJ gelistet | |
| License (German): |  CC-BY - Namensnennung 4.0 International |
