Formation, evolution, and drainage of short-lived glacial lakes in permafrost environments of the northern Teskey Range, Central Asia
In the Teskey Range of the Tien Shan (Kyrgyz Republic), five outburst flood disasters from short-lived glacial lakes in 2006, 2008, 2013, 2014, and 2019 caused severe damages in the downstream part. Short-lived glacial lakes in the Teskey Range grow rapidly and drain within a few months, due to clos...
Published in: | Natural Hazards and Earth System Sciences |
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Copernicus Publications
2021
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Online Access: | https://doi.org/10.5194/nhess-21-2245-2021 https://nhess.copernicus.org/articles/21/2245/2021/nhess-21-2245-2021.pdf https://doaj.org/article/d3879e41ef534fd8be0a1ea531ddb3b8 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:d3879e41ef534fd8be0a1ea531ddb3b8 2023-05-15T16:37:35+02:00 Formation, evolution, and drainage of short-lived glacial lakes in permafrost environments of the northern Teskey Range, Central Asia M. Daiyrov C. Narama 2021-07-01 https://doi.org/10.5194/nhess-21-2245-2021 https://nhess.copernicus.org/articles/21/2245/2021/nhess-21-2245-2021.pdf https://doaj.org/article/d3879e41ef534fd8be0a1ea531ddb3b8 en eng Copernicus Publications doi:10.5194/nhess-21-2245-2021 1561-8633 1684-9981 https://nhess.copernicus.org/articles/21/2245/2021/nhess-21-2245-2021.pdf https://doaj.org/article/d3879e41ef534fd8be0a1ea531ddb3b8 undefined Natural Hazards and Earth System Sciences, Vol 21, Pp 2245-2256 (2021) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2021 fttriple https://doi.org/10.5194/nhess-21-2245-2021 2023-01-22T18:19:02Z In the Teskey Range of the Tien Shan (Kyrgyz Republic), five outburst flood disasters from short-lived glacial lakes in 2006, 2008, 2013, 2014, and 2019 caused severe damages in the downstream part. Short-lived glacial lakes in the Teskey Range grow rapidly and drain within a few months, due to closure and opening of an outlet ice tunnel in an ice-cored moraine complex at the glacier front. In addition to these factors, summer meltwater from the glacier can cause rapid growth. Outburst floods of this lake type are a major hazard in this region and differ from the moraine-dam failures common to the eastern Himalaya. To clarify how short-lived glacial lakes store and drain water over short periods, we use results from a field survey and satellite data to analyze the water level, area, volume, and discharge of Korumdu lake (2017–2019) as well as satellite data to monitor the appearance of 160 other short-lived lakes (2013–2018). Except in 2016, Korumdu lake appeared and drained within about 1 month during all the summers. Water level data recorded by a data logger and time-lapse camera images show that the lake appeared and expanded suddenly from July to August in 2017–2019. The timing of lake appearance indicates that the lake formed when an outlet ice tunnel (subsurface channel) drainage was blocked by depositions of an ice–debris mixture due to ice melting and not by freezing of stored water. For 2017, we used uncrewed aerial vehicle (UAV)-derived digital surface models (DSMs) and water levels, finding that the lake's volume reached 234 000 m3 within 29 d, and then the water discharged for 17 d at a maximum rate of 0.66 m3/s. This discharge rate is more than 20 times smaller than those found earlier (2006–2014) for four short-lived lakes of tunnel type in this region. We argue that this large variation in discharge rates is due to variation in the dimensions of the outlet ice tunnels. For the 160 other short-lived glacial lakes, we found that 117 formed during the ice-melt period from July to September. This ... Article in Journal/Newspaper Ice permafrost Unknown Natural Hazards and Earth System Sciences 21 7 2245 2256 |
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English |
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geo envir |
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geo envir M. Daiyrov C. Narama Formation, evolution, and drainage of short-lived glacial lakes in permafrost environments of the northern Teskey Range, Central Asia |
topic_facet |
geo envir |
description |
In the Teskey Range of the Tien Shan (Kyrgyz Republic), five outburst flood disasters from short-lived glacial lakes in 2006, 2008, 2013, 2014, and 2019 caused severe damages in the downstream part. Short-lived glacial lakes in the Teskey Range grow rapidly and drain within a few months, due to closure and opening of an outlet ice tunnel in an ice-cored moraine complex at the glacier front. In addition to these factors, summer meltwater from the glacier can cause rapid growth. Outburst floods of this lake type are a major hazard in this region and differ from the moraine-dam failures common to the eastern Himalaya. To clarify how short-lived glacial lakes store and drain water over short periods, we use results from a field survey and satellite data to analyze the water level, area, volume, and discharge of Korumdu lake (2017–2019) as well as satellite data to monitor the appearance of 160 other short-lived lakes (2013–2018). Except in 2016, Korumdu lake appeared and drained within about 1 month during all the summers. Water level data recorded by a data logger and time-lapse camera images show that the lake appeared and expanded suddenly from July to August in 2017–2019. The timing of lake appearance indicates that the lake formed when an outlet ice tunnel (subsurface channel) drainage was blocked by depositions of an ice–debris mixture due to ice melting and not by freezing of stored water. For 2017, we used uncrewed aerial vehicle (UAV)-derived digital surface models (DSMs) and water levels, finding that the lake's volume reached 234 000 m3 within 29 d, and then the water discharged for 17 d at a maximum rate of 0.66 m3/s. This discharge rate is more than 20 times smaller than those found earlier (2006–2014) for four short-lived lakes of tunnel type in this region. We argue that this large variation in discharge rates is due to variation in the dimensions of the outlet ice tunnels. For the 160 other short-lived glacial lakes, we found that 117 formed during the ice-melt period from July to September. This ... |
format |
Article in Journal/Newspaper |
author |
M. Daiyrov C. Narama |
author_facet |
M. Daiyrov C. Narama |
author_sort |
M. Daiyrov |
title |
Formation, evolution, and drainage of short-lived glacial lakes in permafrost environments of the northern Teskey Range, Central Asia |
title_short |
Formation, evolution, and drainage of short-lived glacial lakes in permafrost environments of the northern Teskey Range, Central Asia |
title_full |
Formation, evolution, and drainage of short-lived glacial lakes in permafrost environments of the northern Teskey Range, Central Asia |
title_fullStr |
Formation, evolution, and drainage of short-lived glacial lakes in permafrost environments of the northern Teskey Range, Central Asia |
title_full_unstemmed |
Formation, evolution, and drainage of short-lived glacial lakes in permafrost environments of the northern Teskey Range, Central Asia |
title_sort |
formation, evolution, and drainage of short-lived glacial lakes in permafrost environments of the northern teskey range, central asia |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/nhess-21-2245-2021 https://nhess.copernicus.org/articles/21/2245/2021/nhess-21-2245-2021.pdf https://doaj.org/article/d3879e41ef534fd8be0a1ea531ddb3b8 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Natural Hazards and Earth System Sciences, Vol 21, Pp 2245-2256 (2021) |
op_relation |
doi:10.5194/nhess-21-2245-2021 1561-8633 1684-9981 https://nhess.copernicus.org/articles/21/2245/2021/nhess-21-2245-2021.pdf https://doaj.org/article/d3879e41ef534fd8be0a1ea531ddb3b8 |
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op_doi |
https://doi.org/10.5194/nhess-21-2245-2021 |
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Natural Hazards and Earth System Sciences |
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21 |
container_issue |
7 |
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2245 |
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2256 |
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