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How rock glacier hydrology, deformation velocities and ground temperatures interact: Examples from the Swiss Alps

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  • Robert Kenner
  • Luisa Pruessner
  • Jan Beutel
  • Philippe Limpach
  • Marcia Phillips

Abstract

An increasing number of studies highlight the controlling influence of water on rock glacier deformation velocities. The link between the concept of water‐driven shearing processes and numerous observations of correlating mean annual air or ground temperatures and rock glacier velocities is discussed here. We present a dataset measured at the Schafberg rock glacier in the Eastern Swiss Alps, complemented by temperature data from three other rock glaciers in the Swiss Alps, which allowed us to reconstruct the processes influencing both mean annual ground temperatures and rock glacier deformation velocity. Rock glacier hydrology is the parameter linking rock glacier temperature and velocities and is a crucial influencing factor. The main external forcing parameter appart from mean annual air temperature is early winter snow coverage. The study shows that the concept of water being a controlling factor for rock glacier velocity is no contradiction to the observed correlations between air or ground temperature and rock glacier deformation.

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  • Robert Kenner & Luisa Pruessner & Jan Beutel & Philippe Limpach & Marcia Phillips, 2020. "How rock glacier hydrology, deformation velocities and ground temperatures interact: Examples from the Swiss Alps," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 31(1), pages 3-14, January.
    • Handle: RePEc:wly:perpro:v:31:y:2020:i:1:p:3-14
    DOI: 10.1002/ppp.2023
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    File URL: https://doi.org/10.1002/ppp.2023
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    Cited by:

    1. Eike Reinosch & Markus Gerke & Björn Riedel & Antje Schwalb & Qinghua Ye & Johannes Buckel, 2021. "Rock glacier inventory of the western Nyainqêntanglha Range, Tibetan Plateau, supported by InSAR time series and automated classification," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 32(4), pages 657-672, October.

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