Characteristics and Origin of Rock Glaciers in Northern Tien Shan (Kazakhstan/Kyrgyzstan)
ABSTRACT Northern Tien Shan is characterised by a distinct periglacial belt that contains many rock glaciers with an area of 1 km 2 or more. To investigate the reason for their large size and variable occurrence, we analysed a representative subsample of the rock glaciers with respect to topographic...
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crwiley:10.1002/ppp.1825 2024-09-09T20:03:04+00:00 Characteristics and Origin of Rock Glaciers in Northern Tien Shan (Kazakhstan/Kyrgyzstan) Bolch, Tobias Gorbunov, Aldar P. Deutscher Akademischer Austauschdienst 2014 http://dx.doi.org/10.1002/ppp.1825 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1825 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1825 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 25, issue 4, page 320-332 ISSN 1045-6740 1099-1530 journal-article 2014 crwiley https://doi.org/10.1002/ppp.1825 2024-08-22T04:18:25Z ABSTRACT Northern Tien Shan is characterised by a distinct periglacial belt that contains many rock glaciers with an area of 1 km 2 or more. To investigate the reason for their large size and variable occurrence, we analysed a representative subsample of the rock glaciers with respect to topographic and climatic variables. A simple permafrost model indicates that the rock glaciers originate in the zone where permafrost occurrence is very likely and some large rock glaciers flow down to elevations where permafrost is unlikely to exist outside the rock glaciers themselves. Correlation and multiple regression analyses revealed that the occurrence and characteristics of the rock glaciers can only be partly explained by the characteristics of the contributing area (e.g. its area or the headwall height). The correlation is greater with talus‐type rock glaciers than with moraine‐type rock glaciers. The climate can explain the general occurrence of rock glaciers but not their specific characteristics. It is hypothesised that the main reason for the specific distribution and characteristics of these large rock glaciers relates to the interaction with polythermal glaciers, topographic characteristics, intensive weathering and rock avalanches triggered by seismic activity. Copyright © 2014 John Wiley & Sons, Ltd. Article in Journal/Newspaper permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 25 4 320 332 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
ABSTRACT Northern Tien Shan is characterised by a distinct periglacial belt that contains many rock glaciers with an area of 1 km 2 or more. To investigate the reason for their large size and variable occurrence, we analysed a representative subsample of the rock glaciers with respect to topographic and climatic variables. A simple permafrost model indicates that the rock glaciers originate in the zone where permafrost occurrence is very likely and some large rock glaciers flow down to elevations where permafrost is unlikely to exist outside the rock glaciers themselves. Correlation and multiple regression analyses revealed that the occurrence and characteristics of the rock glaciers can only be partly explained by the characteristics of the contributing area (e.g. its area or the headwall height). The correlation is greater with talus‐type rock glaciers than with moraine‐type rock glaciers. The climate can explain the general occurrence of rock glaciers but not their specific characteristics. It is hypothesised that the main reason for the specific distribution and characteristics of these large rock glaciers relates to the interaction with polythermal glaciers, topographic characteristics, intensive weathering and rock avalanches triggered by seismic activity. Copyright © 2014 John Wiley & Sons, Ltd. |
author2 |
Deutscher Akademischer Austauschdienst |
format |
Article in Journal/Newspaper |
author |
Bolch, Tobias Gorbunov, Aldar P. |
spellingShingle |
Bolch, Tobias Gorbunov, Aldar P. Characteristics and Origin of Rock Glaciers in Northern Tien Shan (Kazakhstan/Kyrgyzstan) |
author_facet |
Bolch, Tobias Gorbunov, Aldar P. |
author_sort |
Bolch, Tobias |
title |
Characteristics and Origin of Rock Glaciers in Northern Tien Shan (Kazakhstan/Kyrgyzstan) |
title_short |
Characteristics and Origin of Rock Glaciers in Northern Tien Shan (Kazakhstan/Kyrgyzstan) |
title_full |
Characteristics and Origin of Rock Glaciers in Northern Tien Shan (Kazakhstan/Kyrgyzstan) |
title_fullStr |
Characteristics and Origin of Rock Glaciers in Northern Tien Shan (Kazakhstan/Kyrgyzstan) |
title_full_unstemmed |
Characteristics and Origin of Rock Glaciers in Northern Tien Shan (Kazakhstan/Kyrgyzstan) |
title_sort |
characteristics and origin of rock glaciers in northern tien shan (kazakhstan/kyrgyzstan) |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1002/ppp.1825 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1825 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1825 |
genre |
permafrost Permafrost and Periglacial Processes |
genre_facet |
permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 25, issue 4, page 320-332 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.1825 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
25 |
container_issue |
4 |
container_start_page |
320 |
op_container_end_page |
332 |
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1809934997287600128 |