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...
Published in: | E3S Web of Conferences |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
EDP Sciences
|
Subjects: | |
Online Access: | https://repository.rudn.ru/records/article/record/64836/ |
id |
ftrudnuniv:oai:repository.rudn.ru:r/64836 |
---|---|
record_format |
openpolar |
spelling |
ftrudnuniv:oai:repository.rudn.ru:r/64836 2023-05-15T17:57:04+02:00 Assessing the role of thermal erosion in channel deformation processes in rivers of permafrost zone Debolskaya E. Maslikova O. Gritsuk I. https://repository.rudn.ru/records/article/record/64836/ EN eng EDP Sciences https://doi.org/10.1051/e3sconf/202016301003 https://repository.rudn.ru/records/article/record/64836/ E3S Web of Conferences Ablation Flow of water Heat transfer Hydrology Permafrost Rivers Sediment transport Sedimentation Adequate models Comprehensive model Deformation process Field observations Mathematical simulations Non-simultaneous Numerical calculation Numerical experiments Deformation Article ftrudnuniv https://doi.org/10.1051/e3sconf/202016301003 2022-01-03T09:34:33Z 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. © 2020 The Authors, published by EDP Sciences. Article in Journal/Newspaper permafrost Peoples' Friendship University of Russia (RUDN): Open repository E3S Web of Conferences 163 01003 |
institution |
Open Polar |
collection |
Peoples' Friendship University of Russia (RUDN): Open repository |
op_collection_id |
ftrudnuniv |
language |
English |
topic |
Ablation Flow of water Heat transfer Hydrology Permafrost Rivers Sediment transport Sedimentation Adequate models Comprehensive model Deformation process Field observations Mathematical simulations Non-simultaneous Numerical calculation Numerical experiments Deformation |
spellingShingle |
Ablation Flow of water Heat transfer Hydrology Permafrost Rivers Sediment transport Sedimentation Adequate models Comprehensive model Deformation process Field observations Mathematical simulations Non-simultaneous Numerical calculation Numerical experiments Deformation Debolskaya E. Maslikova O. Gritsuk I. Assessing the role of thermal erosion in channel deformation processes in rivers of permafrost zone |
topic_facet |
Ablation Flow of water Heat transfer Hydrology Permafrost Rivers Sediment transport Sedimentation Adequate models Comprehensive model Deformation process Field observations Mathematical simulations Non-simultaneous Numerical calculation Numerical experiments Deformation |
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. © 2020 The Authors, published by EDP Sciences. |
format |
Article in Journal/Newspaper |
author |
Debolskaya E. Maslikova O. Gritsuk I. |
author_facet |
Debolskaya E. Maslikova O. Gritsuk I. |
author_sort |
Debolskaya E. |
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 |
url |
https://repository.rudn.ru/records/article/record/64836/ |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
E3S Web of Conferences |
op_relation |
https://doi.org/10.1051/e3sconf/202016301003 https://repository.rudn.ru/records/article/record/64836/ |
op_doi |
https://doi.org/10.1051/e3sconf/202016301003 |
container_title |
E3S Web of Conferences |
container_volume |
163 |
container_start_page |
01003 |
_version_ |
1766165429269561344 |