The Cryosphere
The Cryosphere
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Articles | Volume 15, issue 4
Articles | Volume 15, issue 4
https://doi.org/10.5194/tc-15-2057-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-15-2057-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 4
Research article
 | 
26 Apr 2021
Research article |  | 26 Apr 2021

Deciphering the evolution of the Bleis Marscha rock glacier (Val d'Err, eastern Switzerland) with cosmogenic nuclide exposure dating, aerial image correlation, and finite element modeling

Dominik Amschwand, Susan Ivy-Ochs, Marcel Frehner, Olivia Steinemann, Marcus Christl, and Christof Vockenhuber

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Short summary
We reconstruct the Holocene history of the Bleis Marscha rock glacier (eastern Swiss Alps) by determining the surface residence time of boulders via their exposure to cosmic rays. We find that this stack of lobes formed in three phases over the last ~9000 years, controlled by the regional climate. This work adds to our understanding of how these permafrost landforms reacted in the past to climate oscillations and helps to put the current behavior of rock glaciers in a long-term perspective.
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