Assessing the role of thermal erosion in channel deformation processes in rivers of permafrost zone
The study is focused on the deformations caused by the impact of water flow in a river channel composed of melt-able permafrost rocks. It is based on the results of laboratory and mathematical simulation. The results of numerical calculations are compared with data of laboratory and field observatio...
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Format: | Article in Journal/Newspaper |
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EDP Sciences
2020
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Online Access: | https://doi.org/10.1051/e3sconf/202016301003 https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/23/e3sconf_vc2020_01003.pdf https://doaj.org/article/97c7f96d052e43f9885fa655932e2a26 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:97c7f96d052e43f9885fa655932e2a26 2023-05-15T17:57:16+02:00 Assessing the role of thermal erosion in channel deformation processes in rivers of permafrost zone Debolskaya Elena Maslikova Oksana Gritsuk Ilya 2020-01-01 https://doi.org/10.1051/e3sconf/202016301003 https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/23/e3sconf_vc2020_01003.pdf https://doaj.org/article/97c7f96d052e43f9885fa655932e2a26 en fr eng fre EDP Sciences 2267-1242 doi:10.1051/e3sconf/202016301003 https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/23/e3sconf_vc2020_01003.pdf https://doaj.org/article/97c7f96d052e43f9885fa655932e2a26 undefined E3S Web of Conferences, Vol 163, p 01003 (2020) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.1051/e3sconf/202016301003 2023-01-22T18:11:35Z The study is focused on the deformations caused by the impact of water flow in a river channel composed of melt-able permafrost rocks. It is based on the results of laboratory and mathematical simulation. The results of numerical calculations are compared with data of laboratory and field observations. The study shows that a comprehensive and adequate model of river channel deformations should take into account not only ablation, but also other factors, including heat transfer in the soil, sediment transport, and bank slope collapses. Numerical experiments with an improved mathematical model, applied to long time intervals, have shown that the differences between the averaged deformations, calculated by a model of ablation alone, i.e., ignoring bank slope collapses and sediment transport, and a comprehensive model can be considerable. Experiments in a hydraulic flume were good enough to reproduce the effect of delayed collapse, consisting in nonsimultaneous impacts of channel-forming rock melting and a freshet. Article in Journal/Newspaper permafrost Unknown E3S Web of Conferences 163 01003 |
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language |
English French |
topic |
geo envir |
spellingShingle |
geo envir Debolskaya Elena Maslikova Oksana Gritsuk Ilya Assessing the role of thermal erosion in channel deformation processes in rivers of permafrost zone |
topic_facet |
geo envir |
description |
The study is focused on the deformations caused by the impact of water flow in a river channel composed of melt-able permafrost rocks. It is based on the results of laboratory and mathematical simulation. The results of numerical calculations are compared with data of laboratory and field observations. The study shows that a comprehensive and adequate model of river channel deformations should take into account not only ablation, but also other factors, including heat transfer in the soil, sediment transport, and bank slope collapses. Numerical experiments with an improved mathematical model, applied to long time intervals, have shown that the differences between the averaged deformations, calculated by a model of ablation alone, i.e., ignoring bank slope collapses and sediment transport, and a comprehensive model can be considerable. Experiments in a hydraulic flume were good enough to reproduce the effect of delayed collapse, consisting in nonsimultaneous impacts of channel-forming rock melting and a freshet. |
format |
Article in Journal/Newspaper |
author |
Debolskaya Elena Maslikova Oksana Gritsuk Ilya |
author_facet |
Debolskaya Elena Maslikova Oksana Gritsuk Ilya |
author_sort |
Debolskaya Elena |
title |
Assessing the role of thermal erosion in channel deformation processes in rivers of permafrost zone |
title_short |
Assessing the role of thermal erosion in channel deformation processes in rivers of permafrost zone |
title_full |
Assessing the role of thermal erosion in channel deformation processes in rivers of permafrost zone |
title_fullStr |
Assessing the role of thermal erosion in channel deformation processes in rivers of permafrost zone |
title_full_unstemmed |
Assessing the role of thermal erosion in channel deformation processes in rivers of permafrost zone |
title_sort |
assessing the role of thermal erosion in channel deformation processes in rivers of permafrost zone |
publisher |
EDP Sciences |
publishDate |
2020 |
url |
https://doi.org/10.1051/e3sconf/202016301003 https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/23/e3sconf_vc2020_01003.pdf https://doaj.org/article/97c7f96d052e43f9885fa655932e2a26 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
E3S Web of Conferences, Vol 163, p 01003 (2020) |
op_relation |
2267-1242 doi:10.1051/e3sconf/202016301003 https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/23/e3sconf_vc2020_01003.pdf https://doaj.org/article/97c7f96d052e43f9885fa655932e2a26 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1051/e3sconf/202016301003 |
container_title |
E3S Web of Conferences |
container_volume |
163 |
container_start_page |
01003 |
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1766165658752516096 |