A general theory of rock glacier creep based on in‐situ and remote sensing observations
Abstract The ongoing acceleration in rock glacier velocities concurrent with increasing air temperatures, and the widespread onset of rock glacier destabilization have reinforced the interest in rock glacier dynamics and in its coupling to the climate system. Despite the increasing number of studies...
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crwiley:10.1002/ppp.2090 2024-06-23T07:56:10+00:00 A general theory of rock glacier creep based on in‐situ and remote sensing observations Cicoira, Alessandro Marcer, Marco Gärtner‐Roer, Isabelle Bodin, Xavier Arenson, Lukas U. Vieli, Andreas 2020 http://dx.doi.org/10.1002/ppp.2090 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2090 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2090 en eng Wiley http://creativecommons.org/licenses/by-nc/4.0/ Permafrost and Periglacial Processes volume 32, issue 1, page 139-153 ISSN 1045-6740 1099-1530 journal-article 2020 crwiley https://doi.org/10.1002/ppp.2090 2024-06-06T04:23:23Z Abstract The ongoing acceleration in rock glacier velocities concurrent with increasing air temperatures, and the widespread onset of rock glacier destabilization have reinforced the interest in rock glacier dynamics and in its coupling to the climate system. Despite the increasing number of studies investigating this phenomenon, our knowledge of both the fundamental mechanisms controlling rock glacier dynamics, and their long‐term behaviour at the regional scale remain limited. We present a general theory to investigate rock glacier dynamics, its spatial patterns and temporal trends at both regional and local scale. To this end, we combine a model to calculate rock glacier thickness with an empirical creep model for ice‐rich debris, in order to derive the Bulk Creep Factor (BCF), which allows to disentangle the two contributions to the surface velocities from (i) material properties and (ii) geometry. Thereafter, we provide two examples of possible applications of this approach at a regional and local scale. Article in Journal/Newspaper Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 32 1 139 153 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The ongoing acceleration in rock glacier velocities concurrent with increasing air temperatures, and the widespread onset of rock glacier destabilization have reinforced the interest in rock glacier dynamics and in its coupling to the climate system. Despite the increasing number of studies investigating this phenomenon, our knowledge of both the fundamental mechanisms controlling rock glacier dynamics, and their long‐term behaviour at the regional scale remain limited. We present a general theory to investigate rock glacier dynamics, its spatial patterns and temporal trends at both regional and local scale. To this end, we combine a model to calculate rock glacier thickness with an empirical creep model for ice‐rich debris, in order to derive the Bulk Creep Factor (BCF), which allows to disentangle the two contributions to the surface velocities from (i) material properties and (ii) geometry. Thereafter, we provide two examples of possible applications of this approach at a regional and local scale. |
format |
Article in Journal/Newspaper |
author |
Cicoira, Alessandro Marcer, Marco Gärtner‐Roer, Isabelle Bodin, Xavier Arenson, Lukas U. Vieli, Andreas |
spellingShingle |
Cicoira, Alessandro Marcer, Marco Gärtner‐Roer, Isabelle Bodin, Xavier Arenson, Lukas U. Vieli, Andreas A general theory of rock glacier creep based on in‐situ and remote sensing observations |
author_facet |
Cicoira, Alessandro Marcer, Marco Gärtner‐Roer, Isabelle Bodin, Xavier Arenson, Lukas U. Vieli, Andreas |
author_sort |
Cicoira, Alessandro |
title |
A general theory of rock glacier creep based on in‐situ and remote sensing observations |
title_short |
A general theory of rock glacier creep based on in‐situ and remote sensing observations |
title_full |
A general theory of rock glacier creep based on in‐situ and remote sensing observations |
title_fullStr |
A general theory of rock glacier creep based on in‐situ and remote sensing observations |
title_full_unstemmed |
A general theory of rock glacier creep based on in‐situ and remote sensing observations |
title_sort |
general theory of rock glacier creep based on in‐situ and remote sensing observations |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/ppp.2090 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2090 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2090 |
genre |
Permafrost and Periglacial Processes |
genre_facet |
Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 32, issue 1, page 139-153 ISSN 1045-6740 1099-1530 |
op_rights |
http://creativecommons.org/licenses/by-nc/4.0/ |
op_doi |
https://doi.org/10.1002/ppp.2090 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
32 |
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1 |
container_start_page |
139 |
op_container_end_page |
153 |
_version_ |
1802649081750749184 |