Catastrophic glacial multi-phase mass movements: a special type of glacial hazard
International audience Many glacier-related hazards are well typified and studied, but some events stand out from conventional classifications. The Kolka-Karmadon catastrophic event on 20 September 2002 in North Ossetia, North Caucasus, Russia is used as an example of a complex glacier failure exhib...
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ftinsu:oai:HAL:hal-00297100v1 2023-11-12T04:17:34+01:00 Catastrophic glacial multi-phase mass movements: a special type of glacial hazard Petrakov, D. A. Chernomorets, S. S. Evans, S. G. Tutubalina, O. V. Faculty of Geography University Centre for Engineering Geodynamics and Monitoring Department of Earth and Environmental Sciences Waterloo University of Waterloo Waterloo 2008-04-10 https://hal.science/hal-00297100 https://hal.science/hal-00297100/document https://hal.science/hal-00297100/file/adgeo-14-211-2008.pdf en eng HAL CCSD European Geosciences Union hal-00297100 https://hal.science/hal-00297100 https://hal.science/hal-00297100/document https://hal.science/hal-00297100/file/adgeo-14-211-2008.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7340 EISSN: 1680-7359 Advances in Geosciences https://hal.science/hal-00297100 Advances in Geosciences, 2008, 14, pp.211-218 [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2008 ftinsu 2023-10-25T16:28:47Z International audience Many glacier-related hazards are well typified and studied, but some events stand out from conventional classifications. The Kolka-Karmadon catastrophic event on 20 September 2002 in North Ossetia, North Caucasus, Russia is used as an example of a complex glacier failure exhibiting characteristics such as high mobility, long runout, ultrarapid movement and multiphase behaviour. We consider terminology protocol for glacier hazard classification and then, using the Kolka-Karmadon event and several other examples from around the world, we propose a new term for this family of events. Catastrophic glacier multi-phase mass movement (CGMM) is described and further illustrated by eight major events from Russia, Georgia, Peru, Chile, and Canada. CGMM have a combination of specific features: extraordinary velocities and long-distance runout despite low path angle; progressive fluidisation along travel path; superelevation and run-up of the moving mass, air blast wave in the avalanche flow phase; entrainment of available materials in its path, and the repeated nature of the event. CGMM events may affect areas remote from glaciers which were previously considered as safe. Article in Journal/Newspaper glacier* Institut national des sciences de l'Univers: HAL-INSU Canada |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences Petrakov, D. A. Chernomorets, S. S. Evans, S. G. Tutubalina, O. V. Catastrophic glacial multi-phase mass movements: a special type of glacial hazard |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience Many glacier-related hazards are well typified and studied, but some events stand out from conventional classifications. The Kolka-Karmadon catastrophic event on 20 September 2002 in North Ossetia, North Caucasus, Russia is used as an example of a complex glacier failure exhibiting characteristics such as high mobility, long runout, ultrarapid movement and multiphase behaviour. We consider terminology protocol for glacier hazard classification and then, using the Kolka-Karmadon event and several other examples from around the world, we propose a new term for this family of events. Catastrophic glacier multi-phase mass movement (CGMM) is described and further illustrated by eight major events from Russia, Georgia, Peru, Chile, and Canada. CGMM have a combination of specific features: extraordinary velocities and long-distance runout despite low path angle; progressive fluidisation along travel path; superelevation and run-up of the moving mass, air blast wave in the avalanche flow phase; entrainment of available materials in its path, and the repeated nature of the event. CGMM events may affect areas remote from glaciers which were previously considered as safe. |
author2 |
Faculty of Geography University Centre for Engineering Geodynamics and Monitoring Department of Earth and Environmental Sciences Waterloo University of Waterloo Waterloo |
format |
Article in Journal/Newspaper |
author |
Petrakov, D. A. Chernomorets, S. S. Evans, S. G. Tutubalina, O. V. |
author_facet |
Petrakov, D. A. Chernomorets, S. S. Evans, S. G. Tutubalina, O. V. |
author_sort |
Petrakov, D. A. |
title |
Catastrophic glacial multi-phase mass movements: a special type of glacial hazard |
title_short |
Catastrophic glacial multi-phase mass movements: a special type of glacial hazard |
title_full |
Catastrophic glacial multi-phase mass movements: a special type of glacial hazard |
title_fullStr |
Catastrophic glacial multi-phase mass movements: a special type of glacial hazard |
title_full_unstemmed |
Catastrophic glacial multi-phase mass movements: a special type of glacial hazard |
title_sort |
catastrophic glacial multi-phase mass movements: a special type of glacial hazard |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-00297100 https://hal.science/hal-00297100/document https://hal.science/hal-00297100/file/adgeo-14-211-2008.pdf |
geographic |
Canada |
geographic_facet |
Canada |
genre |
glacier* |
genre_facet |
glacier* |
op_source |
ISSN: 1680-7340 EISSN: 1680-7359 Advances in Geosciences https://hal.science/hal-00297100 Advances in Geosciences, 2008, 14, pp.211-218 |
op_relation |
hal-00297100 https://hal.science/hal-00297100 https://hal.science/hal-00297100/document https://hal.science/hal-00297100/file/adgeo-14-211-2008.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782334398263197696 |