Bedrock Fracture by Ice Segregation in Cold Regions
International audience The volumetric expansion of freezing pore water is widely assumed to be a major cause of rock fracture in cold humid regions. Data from experiments simulating natural freezing regimes indicate that bedrock fracture results instead from ice segregation. Fracture depth and timin...
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Online Access: | https://hal.science/hal-00327334 https://doi.org/10.1126/science.1132127 |
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ftnormandieuniv:oai:HAL:hal-00327334v1 2024-04-14T08:07:35+00:00 Bedrock Fracture by Ice Segregation in Cold Regions Murton, J.B. Perterson, R. Ozouf, J.C. Department of Geography University of Sussex Department of Mechanical Engineering University of Alaska Anchorage Morphodynamique Continentale et Côtière (M2C) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN) Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS) 2006-11-17 https://hal.science/hal-00327334 https://doi.org/10.1126/science.1132127 en eng HAL CCSD American Association for the Advancement of Science (AAAS) info:eu-repo/semantics/altIdentifier/doi/10.1126/science.1132127 hal-00327334 https://hal.science/hal-00327334 doi:10.1126/science.1132127 ISSN: 0036-8075 EISSN: 1095-9203 Science https://hal.science/hal-00327334 Science, 2006, 314 (5802), pp.1127-1129. ⟨10.1126/science.1132127⟩ [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2006 ftnormandieuniv https://doi.org/10.1126/science.1132127 2024-03-21T16:44:15Z International audience The volumetric expansion of freezing pore water is widely assumed to be a major cause of rock fracture in cold humid regions. Data from experiments simulating natural freezing regimes indicate that bedrock fracture results instead from ice segregation. Fracture depth and timing are also numerically simulated by coupling heat and mass transfer with a fracture model. The depth and geometry of fractures match those in Arctic permafrost and ice-age weathering profiles. This agreement supports a conceptual model in which ice segregation in near-surface permafrost leads progressively to rock fracture and heave, whereas permafrost degradation leads episodically to melt of segregated ice and rock settlement Article in Journal/Newspaper Arctic Ice permafrost Normandie Université: HAL Arctic Science 314 5802 1127 1129 |
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Open Polar |
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Normandie Université: HAL |
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ftnormandieuniv |
language |
English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Murton, J.B. Perterson, R. Ozouf, J.C. Bedrock Fracture by Ice Segregation in Cold Regions |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience The volumetric expansion of freezing pore water is widely assumed to be a major cause of rock fracture in cold humid regions. Data from experiments simulating natural freezing regimes indicate that bedrock fracture results instead from ice segregation. Fracture depth and timing are also numerically simulated by coupling heat and mass transfer with a fracture model. The depth and geometry of fractures match those in Arctic permafrost and ice-age weathering profiles. This agreement supports a conceptual model in which ice segregation in near-surface permafrost leads progressively to rock fracture and heave, whereas permafrost degradation leads episodically to melt of segregated ice and rock settlement |
author2 |
Department of Geography University of Sussex Department of Mechanical Engineering University of Alaska Anchorage Morphodynamique Continentale et Côtière (M2C) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN) Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Murton, J.B. Perterson, R. Ozouf, J.C. |
author_facet |
Murton, J.B. Perterson, R. Ozouf, J.C. |
author_sort |
Murton, J.B. |
title |
Bedrock Fracture by Ice Segregation in Cold Regions |
title_short |
Bedrock Fracture by Ice Segregation in Cold Regions |
title_full |
Bedrock Fracture by Ice Segregation in Cold Regions |
title_fullStr |
Bedrock Fracture by Ice Segregation in Cold Regions |
title_full_unstemmed |
Bedrock Fracture by Ice Segregation in Cold Regions |
title_sort |
bedrock fracture by ice segregation in cold regions |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.science/hal-00327334 https://doi.org/10.1126/science.1132127 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost |
genre_facet |
Arctic Ice permafrost |
op_source |
ISSN: 0036-8075 EISSN: 1095-9203 Science https://hal.science/hal-00327334 Science, 2006, 314 (5802), pp.1127-1129. ⟨10.1126/science.1132127⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1126/science.1132127 hal-00327334 https://hal.science/hal-00327334 doi:10.1126/science.1132127 |
op_doi |
https://doi.org/10.1126/science.1132127 |
container_title |
Science |
container_volume |
314 |
container_issue |
5802 |
container_start_page |
1127 |
op_container_end_page |
1129 |
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1796304998577995776 |