The December 2008 Crammont rock avalanche, Mont Blanc massif area, Italy
We describe a 0.5 Mm 3 rock avalanche that occurred in 2008 in the western Alps and discuss possible roles of controlling factors in the context of current climate change. The source is located between 2410 m and 2653 m a.s.l. on Mont Crammont and is controlled by a densely fractured rock structure....
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ftdoajarticles:oai:doaj.org/article:6ca4dfe5325b44de9769a3c16471f971 2023-05-15T17:57:24+02:00 The December 2008 Crammont rock avalanche, Mont Blanc massif area, Italy P. Deline W. Alberto M. Broccolato O. Hungr J. Noetzli L. Ravanel A. Tamburini 2011-12-01T00:00:00Z https://doi.org/10.5194/nhess-11-3307-2011 https://doaj.org/article/6ca4dfe5325b44de9769a3c16471f971 EN eng Copernicus Publications http://www.nat-hazards-earth-syst-sci.net/11/3307/2011/nhess-11-3307-2011.pdf https://doaj.org/toc/1561-8633 https://doaj.org/toc/1684-9981 doi:10.5194/nhess-11-3307-2011 1561-8633 1684-9981 https://doaj.org/article/6ca4dfe5325b44de9769a3c16471f971 Natural Hazards and Earth System Sciences, Vol 11, Iss 12, Pp 3307-3318 (2011) Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 Geology QE1-996.5 article 2011 ftdoajarticles https://doi.org/10.5194/nhess-11-3307-2011 2022-12-31T16:07:18Z We describe a 0.5 Mm 3 rock avalanche that occurred in 2008 in the western Alps and discuss possible roles of controlling factors in the context of current climate change. The source is located between 2410 m and 2653 m a.s.l. on Mont Crammont and is controlled by a densely fractured rock structure. The main part of the collapsed rock mass deposited at the foot of the rock wall. A smaller part travelled much farther, reaching horizontal and vertical travel distances of 3050 m and 1560 m, respectively. The mobility of the rock mass was enhanced by channelization and snow. The rock-avalanche volume was calculated by comparison of pre- and post-event DTMs, and geomechanical characterization of the detachment zone was extracted from LiDAR point cloud processing. Back analysis of the rock-avalanche runout suggests a two stage event. There was no previous rock avalanche activity from the Mont Crammont ridge during the Holocene. The 2008 rock avalanche may have resulted from permafrost degradation in the steep rock wall, as suggested by seepage water in the scar after the collapse in spite of negative air temperatures, and modelling of rock temperatures that indicate warm permafrost ( T > −2 °C). Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Mont Blanc ENVELOPE(69.468,69.468,-49.461,-49.461) Natural Hazards and Earth System Sciences 11 12 3307 3318 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 Geology QE1-996.5 P. Deline W. Alberto M. Broccolato O. Hungr J. Noetzli L. Ravanel A. Tamburini The December 2008 Crammont rock avalanche, Mont Blanc massif area, Italy |
topic_facet |
Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 Geology QE1-996.5 |
description |
We describe a 0.5 Mm 3 rock avalanche that occurred in 2008 in the western Alps and discuss possible roles of controlling factors in the context of current climate change. The source is located between 2410 m and 2653 m a.s.l. on Mont Crammont and is controlled by a densely fractured rock structure. The main part of the collapsed rock mass deposited at the foot of the rock wall. A smaller part travelled much farther, reaching horizontal and vertical travel distances of 3050 m and 1560 m, respectively. The mobility of the rock mass was enhanced by channelization and snow. The rock-avalanche volume was calculated by comparison of pre- and post-event DTMs, and geomechanical characterization of the detachment zone was extracted from LiDAR point cloud processing. Back analysis of the rock-avalanche runout suggests a two stage event. There was no previous rock avalanche activity from the Mont Crammont ridge during the Holocene. The 2008 rock avalanche may have resulted from permafrost degradation in the steep rock wall, as suggested by seepage water in the scar after the collapse in spite of negative air temperatures, and modelling of rock temperatures that indicate warm permafrost ( T > −2 °C). |
format |
Article in Journal/Newspaper |
author |
P. Deline W. Alberto M. Broccolato O. Hungr J. Noetzli L. Ravanel A. Tamburini |
author_facet |
P. Deline W. Alberto M. Broccolato O. Hungr J. Noetzli L. Ravanel A. Tamburini |
author_sort |
P. Deline |
title |
The December 2008 Crammont rock avalanche, Mont Blanc massif area, Italy |
title_short |
The December 2008 Crammont rock avalanche, Mont Blanc massif area, Italy |
title_full |
The December 2008 Crammont rock avalanche, Mont Blanc massif area, Italy |
title_fullStr |
The December 2008 Crammont rock avalanche, Mont Blanc massif area, Italy |
title_full_unstemmed |
The December 2008 Crammont rock avalanche, Mont Blanc massif area, Italy |
title_sort |
december 2008 crammont rock avalanche, mont blanc massif area, italy |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/nhess-11-3307-2011 https://doaj.org/article/6ca4dfe5325b44de9769a3c16471f971 |
long_lat |
ENVELOPE(69.468,69.468,-49.461,-49.461) |
geographic |
Mont Blanc |
geographic_facet |
Mont Blanc |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Natural Hazards and Earth System Sciences, Vol 11, Iss 12, Pp 3307-3318 (2011) |
op_relation |
http://www.nat-hazards-earth-syst-sci.net/11/3307/2011/nhess-11-3307-2011.pdf https://doaj.org/toc/1561-8633 https://doaj.org/toc/1684-9981 doi:10.5194/nhess-11-3307-2011 1561-8633 1684-9981 https://doaj.org/article/6ca4dfe5325b44de9769a3c16471f971 |
op_doi |
https://doi.org/10.5194/nhess-11-3307-2011 |
container_title |
Natural Hazards and Earth System Sciences |
container_volume |
11 |
container_issue |
12 |
container_start_page |
3307 |
op_container_end_page |
3318 |
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1766165826516287488 |