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

Data sets

Flow velocity records at Rock Glacier Outer Hochebenkar (Äußeres Hochebenkar), Ötztal, Tyrolian Alps, Austria, 1997 et seq. M. Stocker-Waldhuber, A. Fischer, L. Hartl, J. Abermann, and H. Schneider

Correspondence-driven plane-based M3C2 for quantification of 3D topographic change with lower uncertainty [Data and Source Code] V. Zahs, L. Winiwarter, K. Anders, J. G. Williams, M. Rutzinger, M. Bremer, and B. Höfle

Multisensor monitoring data of Hochebenkar Rock Glacier T. Zieher, M. Bremer, C. Klug, and L. Hartl

Model code and software

thomaszieher/HRG_reanalysis: v0.9.0 (v0.9.0) T. Zieher

LeaHartl/Hochebenkar_figures: Hochebenkar figures v0.1 (v0.1) L. Hartl

Video abstract

Two destabilization phases of the Äußeres Hochebenkar Rock Glacier A. Cicoira, L. Hartl, T. Zieher, M. Bremer, M. Stocker-Waldhuber, V. Zahs, B. Höfle, and C. Klug

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.