A conceptual model for evaluating the stability of high-altitude ice-rich slopes through coupled thermo-hydro-mechanical simulation
The collapse of glacial, permafrost, and ice-rich moraine slopes in high-altitude mountainous areas not only threatens downstream residents and infrastructure but also displaces ice mass to lower and warmer elevations, accelerating glacial ablation to some extent. Despite being considered rare, ice-...
Published in: | Engineering Geology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier B.V.
2024
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Online Access: | http://repository.hkust.edu.hk/ir/Record/1783.1-137172 https://doi.org/10.1016/j.enggeo.2024.107514 http://www.scopus.com/record/display.url?eid=2-s2.0-85190766911&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=001221741800001 |
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ftunivsthongkong:oai:repository.hkust.edu.hk:1783.1-137172 2024-09-15T18:11:34+00:00 A conceptual model for evaluating the stability of high-altitude ice-rich slopes through coupled thermo-hydro-mechanical simulation Wei, Mingdong Zhang, Li Min Jiang, Ruochen 2024 http://repository.hkust.edu.hk/ir/Record/1783.1-137172 https://doi.org/10.1016/j.enggeo.2024.107514 http://www.scopus.com/record/display.url?eid=2-s2.0-85190766911&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=001221741800001 English eng Elsevier B.V. http://repository.hkust.edu.hk/ir/Record/1783.1-137172 Engineering Geology, v. 334, May 2024, article number 107514 1872-6917 https://doi.org/10.1016/j.enggeo.2024.107514 http://www.scopus.com/record/display.url?eid=2-s2.0-85190766911&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=001221741800001 Ice-soil mixture Slope stability Thermo-hydro-mechanical model Climate change Glacial ablation Article 2024 ftunivsthongkong https://doi.org/10.1016/j.enggeo.2024.107514 2024-08-06T23:38:03Z The collapse of glacial, permafrost, and ice-rich moraine slopes in high-altitude mountainous areas not only threatens downstream residents and infrastructure but also displaces ice mass to lower and warmer elevations, accelerating glacial ablation to some extent. Despite being considered rare, ice-rich slopes collapse more frequently than commonly thought due to climate change. For example, two adjacent mountain glaciers in the Aru Range of the Tibetan Plateau, characterized by large volumes (68 × 106 m3 and 83 × 106 m3, respectively) and low surface slope angles (12.3◦ and 12.9◦, respectively), collapsed surprisingly in 2016. While the mechanisms behind these collapses have garnered broad attention, the ability to quantitatively assess the instability of ice-rich slopes remains limited due to the complex interplay of multi-physical processes. Taking the Aru glacier collapses as reference cases, this paper presents a conceptual model, implemented through coupled thermohydro-mechanical simulation, to evaluate the stability of high-altitude ice-rich slopes due to climate change, rainfall and ice ablation. Results indicate that the methodology captures the effects of temperature change, rainfall and meltwater on the instability events well, demonstrating promising potential in evaluating potential collapse zones of ice-rich slopes similar to the Aru glaciers. Furthermore, the role of climate change in the well-known Aru events is demonstrated using a state-of-the-art global climate reanalysis dataset. Findings reveal that the increase in liquid water infiltrating the Aru glaciers since 2010 was a critical factor leading to the instability events. Article in Journal/Newspaper Ice permafrost The Hong Kong University of Science and Technology: HKUST Institutional Repository Engineering Geology 334 107514 |
institution |
Open Polar |
collection |
The Hong Kong University of Science and Technology: HKUST Institutional Repository |
op_collection_id |
ftunivsthongkong |
language |
English |
topic |
Ice-soil mixture Slope stability Thermo-hydro-mechanical model Climate change Glacial ablation |
spellingShingle |
Ice-soil mixture Slope stability Thermo-hydro-mechanical model Climate change Glacial ablation Wei, Mingdong Zhang, Li Min Jiang, Ruochen A conceptual model for evaluating the stability of high-altitude ice-rich slopes through coupled thermo-hydro-mechanical simulation |
topic_facet |
Ice-soil mixture Slope stability Thermo-hydro-mechanical model Climate change Glacial ablation |
description |
The collapse of glacial, permafrost, and ice-rich moraine slopes in high-altitude mountainous areas not only threatens downstream residents and infrastructure but also displaces ice mass to lower and warmer elevations, accelerating glacial ablation to some extent. Despite being considered rare, ice-rich slopes collapse more frequently than commonly thought due to climate change. For example, two adjacent mountain glaciers in the Aru Range of the Tibetan Plateau, characterized by large volumes (68 × 106 m3 and 83 × 106 m3, respectively) and low surface slope angles (12.3◦ and 12.9◦, respectively), collapsed surprisingly in 2016. While the mechanisms behind these collapses have garnered broad attention, the ability to quantitatively assess the instability of ice-rich slopes remains limited due to the complex interplay of multi-physical processes. Taking the Aru glacier collapses as reference cases, this paper presents a conceptual model, implemented through coupled thermohydro-mechanical simulation, to evaluate the stability of high-altitude ice-rich slopes due to climate change, rainfall and ice ablation. Results indicate that the methodology captures the effects of temperature change, rainfall and meltwater on the instability events well, demonstrating promising potential in evaluating potential collapse zones of ice-rich slopes similar to the Aru glaciers. Furthermore, the role of climate change in the well-known Aru events is demonstrated using a state-of-the-art global climate reanalysis dataset. Findings reveal that the increase in liquid water infiltrating the Aru glaciers since 2010 was a critical factor leading to the instability events. |
format |
Article in Journal/Newspaper |
author |
Wei, Mingdong Zhang, Li Min Jiang, Ruochen |
author_facet |
Wei, Mingdong Zhang, Li Min Jiang, Ruochen |
author_sort |
Wei, Mingdong |
title |
A conceptual model for evaluating the stability of high-altitude ice-rich slopes through coupled thermo-hydro-mechanical simulation |
title_short |
A conceptual model for evaluating the stability of high-altitude ice-rich slopes through coupled thermo-hydro-mechanical simulation |
title_full |
A conceptual model for evaluating the stability of high-altitude ice-rich slopes through coupled thermo-hydro-mechanical simulation |
title_fullStr |
A conceptual model for evaluating the stability of high-altitude ice-rich slopes through coupled thermo-hydro-mechanical simulation |
title_full_unstemmed |
A conceptual model for evaluating the stability of high-altitude ice-rich slopes through coupled thermo-hydro-mechanical simulation |
title_sort |
conceptual model for evaluating the stability of high-altitude ice-rich slopes through coupled thermo-hydro-mechanical simulation |
publisher |
Elsevier B.V. |
publishDate |
2024 |
url |
http://repository.hkust.edu.hk/ir/Record/1783.1-137172 https://doi.org/10.1016/j.enggeo.2024.107514 http://www.scopus.com/record/display.url?eid=2-s2.0-85190766911&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=001221741800001 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_relation |
http://repository.hkust.edu.hk/ir/Record/1783.1-137172 Engineering Geology, v. 334, May 2024, article number 107514 1872-6917 https://doi.org/10.1016/j.enggeo.2024.107514 http://www.scopus.com/record/display.url?eid=2-s2.0-85190766911&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=001221741800001 |
op_doi |
https://doi.org/10.1016/j.enggeo.2024.107514 |
container_title |
Engineering Geology |
container_volume |
334 |
container_start_page |
107514 |
_version_ |
1810449149076701184 |