Articles | Volume 11, issue 1
https://doi.org/10.5194/esurf-11-117-2023
https://doi.org/10.5194/esurf-11-117-2023
Research article
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28 Feb 2023
Research article | Highlight paper |  | 28 Feb 2023

Multi-sensor monitoring and data integration reveal cyclical destabilization of the Äußeres Hochebenkar rock glacier

Lea Hartl, Thomas Zieher, Magnus Bremer, Martin Stocker-Waldhuber, Vivien Zahs, Bernhard Höfle, Christoph Klug, and Alessandro Cicoira

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Cited articles

Arenson, L., Hoelzle, M., and Springman, S.: Borehole deformation measurements and internal structure of some rock glaciers in Switzerland, Permafrost Periglac. Process., 13, 117–135, 2002. a, b
Arenson, L. U. and Springman, S. M.: Triaxial constant stress and constant strain rate tests on ice-rich permafrost samples, Can. Geotech. J., 42, 412–430, 2005. a
Avian, M., Kaufmann, V., and Lieb, G. K.: Recent and Holocene dynamics of a rock glacier system: The example of Langtalkar (Central Alps, Austria), Norsk Geografisk Tidsskrift-Norwegian Journal of Geography, 59, 149–156, 2005. a
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Barsch, D.: Indicators for the present and former geoecology in high mountain environments, Springer, Berlin, Heidelberg, ISBN 978-3-642-80093-1, 1996. a
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Editor
Melting permafrost in high mountain areas represents a significant climate change driven hazard. This research shows the importance of this using novel photogrammetric methods coupled with a long observational record.
Short summary
The rock glacier in Äußeres Hochebenkar (Austria) moved faster in 2021–2022 than it has in about 70 years of monitoring. It is currently destabilizing. Using a combination of different data types and methods, we show that there have been two cycles of destabilization at Hochebenkar and provide a detailed analysis of velocity and surface changes. Because our time series are very long and show repeated destabilization, this helps us better understand the processes of rock glacier destabilization.