Articles | Volume 11, issue 1
Research article
 | Highlight paper
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

Related authors

Small-scale spatial variability in bare-ice reflectance at Jamtalferner, Austria
Lea Hartl, Lucia Felbauer, Gabriele Schwaizer, and Andrea Fischer
The Cryosphere, 14, 4063–4081,,, 2020
Short summary
Obtaining sub-daily new snow density from automated measurements in high mountain regions
Kay Helfricht, Lea Hartl, Roland Koch, Christoph Marty, and Marc Olefs
Hydrol. Earth Syst. Sci., 22, 2655–2668,,, 2018
Short summary

Related subject area

Cross-cutting themes: Digital Landscapes: Insights into geomorphological processes from high-resolution topography and quantitative interrogation of topographic data
Size, shape and orientation matter: fast and semi-automatic measurement of grain geometries from 3D point clouds
Philippe Steer, Laure Guerit, Dimitri Lague, Alain Crave, and Aurélie Gourdon
Earth Surf. Dynam., 10, 1211–1232,,, 2022
Short summary
Rockfall trajectory reconstruction: a flexible method utilizing video footage and high-resolution terrain models
François Noël, Michel Jaboyedoff, Andrin Caviezel, Clément Hibert, Franck Bourrier, and Jean-Philippe Malet
Earth Surf. Dynam., 10, 1141–1164,,, 2022
Short summary
Short Communication: Evaluating the accuracy of binary classifiers for geomorphic applications
Matthew William Rossi
Earth Surf. Dynam. Discuss.,,, 2022
Revised manuscript accepted for ESurf
Short summary
Drainage reorganization induces deviations in the scaling between valley width and drainage area
Elhanan Harel, Liran Goren, Onn Crouvi, Hanan Ginat, and Eitan Shelef
Earth Surf. Dynam., 10, 875–894,,, 2022
Short summary
Unraveling the hydrology and sediment balance of an ungauged lake in the Sudano-Sahelian region of West Africa using remote sensing
Silvan Ragettli, Tabea Donauer, Peter Molnar, Ron Delnoije, and Tobias Siegfried
Earth Surf. Dynam., 10, 797–815,,, 2022
Short summary

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
Barsch, D.: Permafrost creep and rockglaciers, Permafrost Periglac. Process., 3, 175–188, 1992. a
Barsch, D.: Indicators for the present and former geoecology in high mountain environments, Springer, Berlin, Heidelberg, ISBN 978-3-642-80093-1, 1996. a
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.