Bedrock Fracture by Ice Segregation in Cold Regions
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...
Published in: | Science |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Association for the Advancement of Science (AAAS)
2006
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1126/science.1132127 https://www.science.org/doi/pdf/10.1126/science.1132127 |
id |
craaas:10.1126/science.1132127 |
---|---|
record_format |
openpolar |
spelling |
craaas:10.1126/science.1132127 2024-06-23T07:50:12+00:00 Bedrock Fracture by Ice Segregation in Cold Regions Murton, Julian B. Peterson, Rorik Ozouf, Jean-Claude 2006 http://dx.doi.org/10.1126/science.1132127 https://www.science.org/doi/pdf/10.1126/science.1132127 en eng American Association for the Advancement of Science (AAAS) Science volume 314, issue 5802, page 1127-1129 ISSN 0036-8075 1095-9203 journal-article 2006 craaas https://doi.org/10.1126/science.1132127 2024-06-13T04:01:44Z 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 AAAS Resource Center (American Association for the Advancement of Science) Arctic Science 314 5802 1127 1129 |
institution |
Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Murton, Julian B. Peterson, Rorik Ozouf, Jean-Claude |
spellingShingle |
Murton, Julian B. Peterson, Rorik Ozouf, Jean-Claude Bedrock Fracture by Ice Segregation in Cold Regions |
author_facet |
Murton, Julian B. Peterson, Rorik Ozouf, Jean-Claude |
author_sort |
Murton, Julian 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 |
American Association for the Advancement of Science (AAAS) |
publishDate |
2006 |
url |
http://dx.doi.org/10.1126/science.1132127 https://www.science.org/doi/pdf/10.1126/science.1132127 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost |
genre_facet |
Arctic Ice permafrost |
op_source |
Science volume 314, issue 5802, page 1127-1129 ISSN 0036-8075 1095-9203 |
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 |
_version_ |
1802641075128500224 |