Two decades of responses (1986–2006) to climate by the Laurichard rock glacier, French Alps
Abstract The Laurichard active rock glacier is the permafrost‐related landform with the longest record of monitoring in France, including an annual geodetic survey, repeated geoelectrical campaigns from 1979 onwards and continuous recording of ground temperature since 2003. These data were used to e...
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crwiley:10.1002/ppp.665 2024-06-23T07:56:07+00:00 Two decades of responses (1986–2006) to climate by the Laurichard rock glacier, French Alps Bodin, Xavier Thibert, Emmanuel Fabre, Denis Ribolini, Adriano Schoeneich, Philippe Francou, Bernard Reynaud, Louis Fort, Monique 2009 http://dx.doi.org/10.1002/ppp.665 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.665 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.665 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 20, issue 4, page 331-344 ISSN 1045-6740 1099-1530 journal-article 2009 crwiley https://doi.org/10.1002/ppp.665 2024-06-13T04:21:41Z Abstract The Laurichard active rock glacier is the permafrost‐related landform with the longest record of monitoring in France, including an annual geodetic survey, repeated geoelectrical campaigns from 1979 onwards and continuous recording of ground temperature since 2003. These data were used to examine changes in creep rates and internal structure from 1986 to 2006. The control that climatic variables exert on rock glacier kinematics was investigated over three time scales. Between the 1980s and the early 2000s, the main observed changes were a general increase in surface velocity and a decrease in internal resistivity. At a multi‐year scale, the high correlation between surface movement and snow thickness in the preceding December appears to confirm the importance of snow cover conditions in early winter through their influence on the ground thermal regime. A comparison of surface velocities, regional climatic datasets and ground sub‐surface temperatures over six years suggests a strong relation between rock glacier deformation and ground temperature, as well as a role for liquid water due to melt of thick snow cover. Finally, unusual surface lowering that accompanied peak velocities in 2004 may be due to a general thaw of the top of the permafrost, probably caused both by two successive snowy winters and by high energy inputs during the warm summer of 2003. Copyright © 2009 John Wiley & Sons, Ltd. Article in Journal/Newspaper permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 20 4 331 344 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The Laurichard active rock glacier is the permafrost‐related landform with the longest record of monitoring in France, including an annual geodetic survey, repeated geoelectrical campaigns from 1979 onwards and continuous recording of ground temperature since 2003. These data were used to examine changes in creep rates and internal structure from 1986 to 2006. The control that climatic variables exert on rock glacier kinematics was investigated over three time scales. Between the 1980s and the early 2000s, the main observed changes were a general increase in surface velocity and a decrease in internal resistivity. At a multi‐year scale, the high correlation between surface movement and snow thickness in the preceding December appears to confirm the importance of snow cover conditions in early winter through their influence on the ground thermal regime. A comparison of surface velocities, regional climatic datasets and ground sub‐surface temperatures over six years suggests a strong relation between rock glacier deformation and ground temperature, as well as a role for liquid water due to melt of thick snow cover. Finally, unusual surface lowering that accompanied peak velocities in 2004 may be due to a general thaw of the top of the permafrost, probably caused both by two successive snowy winters and by high energy inputs during the warm summer of 2003. Copyright © 2009 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Bodin, Xavier Thibert, Emmanuel Fabre, Denis Ribolini, Adriano Schoeneich, Philippe Francou, Bernard Reynaud, Louis Fort, Monique |
spellingShingle |
Bodin, Xavier Thibert, Emmanuel Fabre, Denis Ribolini, Adriano Schoeneich, Philippe Francou, Bernard Reynaud, Louis Fort, Monique Two decades of responses (1986–2006) to climate by the Laurichard rock glacier, French Alps |
author_facet |
Bodin, Xavier Thibert, Emmanuel Fabre, Denis Ribolini, Adriano Schoeneich, Philippe Francou, Bernard Reynaud, Louis Fort, Monique |
author_sort |
Bodin, Xavier |
title |
Two decades of responses (1986–2006) to climate by the Laurichard rock glacier, French Alps |
title_short |
Two decades of responses (1986–2006) to climate by the Laurichard rock glacier, French Alps |
title_full |
Two decades of responses (1986–2006) to climate by the Laurichard rock glacier, French Alps |
title_fullStr |
Two decades of responses (1986–2006) to climate by the Laurichard rock glacier, French Alps |
title_full_unstemmed |
Two decades of responses (1986–2006) to climate by the Laurichard rock glacier, French Alps |
title_sort |
two decades of responses (1986–2006) to climate by the laurichard rock glacier, french alps |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1002/ppp.665 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.665 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.665 |
genre |
permafrost Permafrost and Periglacial Processes |
genre_facet |
permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 20, issue 4, page 331-344 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.665 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
20 |
container_issue |
4 |
container_start_page |
331 |
op_container_end_page |
344 |
_version_ |
1802648997194629120 |