Modelling rock avalanches and their relation to permafrost degradation in glacial environments
Abstract High runout distances characterize landslides falling on glaciers because of (1) low friction offered by ice to sliding and (2) complex rock‐ice interactions that take place during mass motion. Block‐fall models (two (2D) and three dimensional (3D)) were tested on the 1936 Felik landslide (...
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crwiley:10.1002/ppp.432 2024-09-15T18:11:26+00:00 Modelling rock avalanches and their relation to permafrost degradation in glacial environments Bottino, Giannantonio Chiarle, Marta Joly, André Mortara, Giovanni 2002 http://dx.doi.org/10.1002/ppp.432 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.432 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.432 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 13, issue 4, page 283-288 ISSN 1045-6740 1099-1530 journal-article 2002 crwiley https://doi.org/10.1002/ppp.432 2024-07-25T04:23:21Z Abstract High runout distances characterize landslides falling on glaciers because of (1) low friction offered by ice to sliding and (2) complex rock‐ice interactions that take place during mass motion. Block‐fall models (two (2D) and three dimensional (3D)) were tested on the 1936 Felik landslide (Mount Rosa Massif). Geotechnical parameters were assessed through a back‐analysis aided by field surveys, aerial photo and historical data analysis. Outcomes are verified for two rock‐ice avalanches which ran along the Brenva Glacier (Mount Blanc Massif) in 1920 and 1997. Empirical models show poor precision (75%). 3D numerical models are too complex but 2D ones gave results that pointed out that real runouts exceed predicted ones by 30%, possibly due to fluidization processes. Rock‐ice avalanches require attention because they originate in areas likely destined to experience permafrost degradation and glacier retreat. Copyright © 2002 John Wiley & Sons, Ltd. Article in Journal/Newspaper Ice permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 13 4 283 288 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract High runout distances characterize landslides falling on glaciers because of (1) low friction offered by ice to sliding and (2) complex rock‐ice interactions that take place during mass motion. Block‐fall models (two (2D) and three dimensional (3D)) were tested on the 1936 Felik landslide (Mount Rosa Massif). Geotechnical parameters were assessed through a back‐analysis aided by field surveys, aerial photo and historical data analysis. Outcomes are verified for two rock‐ice avalanches which ran along the Brenva Glacier (Mount Blanc Massif) in 1920 and 1997. Empirical models show poor precision (75%). 3D numerical models are too complex but 2D ones gave results that pointed out that real runouts exceed predicted ones by 30%, possibly due to fluidization processes. Rock‐ice avalanches require attention because they originate in areas likely destined to experience permafrost degradation and glacier retreat. Copyright © 2002 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Bottino, Giannantonio Chiarle, Marta Joly, André Mortara, Giovanni |
spellingShingle |
Bottino, Giannantonio Chiarle, Marta Joly, André Mortara, Giovanni Modelling rock avalanches and their relation to permafrost degradation in glacial environments |
author_facet |
Bottino, Giannantonio Chiarle, Marta Joly, André Mortara, Giovanni |
author_sort |
Bottino, Giannantonio |
title |
Modelling rock avalanches and their relation to permafrost degradation in glacial environments |
title_short |
Modelling rock avalanches and their relation to permafrost degradation in glacial environments |
title_full |
Modelling rock avalanches and their relation to permafrost degradation in glacial environments |
title_fullStr |
Modelling rock avalanches and their relation to permafrost degradation in glacial environments |
title_full_unstemmed |
Modelling rock avalanches and their relation to permafrost degradation in glacial environments |
title_sort |
modelling rock avalanches and their relation to permafrost degradation in glacial environments |
publisher |
Wiley |
publishDate |
2002 |
url |
http://dx.doi.org/10.1002/ppp.432 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.432 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.432 |
genre |
Ice permafrost Permafrost and Periglacial Processes |
genre_facet |
Ice permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 13, issue 4, page 283-288 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.432 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
13 |
container_issue |
4 |
container_start_page |
283 |
op_container_end_page |
288 |
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1810449023440519168 |