Measuring and inferring the ice thickness distribution of four glaciers in the Tien Shan, Kyrgyzstan
Abstract Glaciers in the Tien Shan mountains contribute considerably to the fresh water used for irrigation, households and energy supply in the dry lowland areas of Kyrgyzstan and its neighbouring countries. To date, reconstructions of the current ice volume and ice thickness distribution remain sc...
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Language: | English |
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Online Access: | http://dx.doi.org/10.1017/jog.2020.104 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143020001045 |
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crcambridgeupr:10.1017/jog.2020.104 2024-06-23T07:54:15+00:00 Measuring and inferring the ice thickness distribution of four glaciers in the Tien Shan, Kyrgyzstan Van Tricht, Lander Huybrechts, Philippe Van Breedam, Jonas Fürst, Johannes J. Rybak, Oleg Satylkanov, Rysbek Ermenbaiev, Bakyt Popovnin, Victor Neyns, Robbe Paice, Chloë Marie Malz, Philipp 2020 http://dx.doi.org/10.1017/jog.2020.104 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143020001045 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Journal of Glaciology volume 67, issue 262, page 269-286 ISSN 0022-1430 1727-5652 journal-article 2020 crcambridgeupr https://doi.org/10.1017/jog.2020.104 2024-06-05T04:04:52Z Abstract Glaciers in the Tien Shan mountains contribute considerably to the fresh water used for irrigation, households and energy supply in the dry lowland areas of Kyrgyzstan and its neighbouring countries. To date, reconstructions of the current ice volume and ice thickness distribution remain scarce, and accurate data are largely lacking at the local scale. Here, we present a detailed ice thickness distribution of Ashu-Tor, Bordu, Golubin and Kara-Batkak glaciers derived from radio-echo sounding measurements and modelling. All the ice thickness measurements are used to calibrate three individual models to estimate the ice thickness in inaccessible areas. A cross-validation between modelled and measured ice thickness for a subset of the data is performed to attribute a weight to every model and to assemble a final composite ice thickness distribution for every glacier. Results reveal the thickest ice on Ashu-Tor glacier with values up to 201 ± 12 m. The ice thickness measurements and distributions are also compared with estimates composed without the use of in situ data. These estimates approach the total ice volume well, but local ice thicknesses vary substantially. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 67 262 269 286 |
institution |
Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Glaciers in the Tien Shan mountains contribute considerably to the fresh water used for irrigation, households and energy supply in the dry lowland areas of Kyrgyzstan and its neighbouring countries. To date, reconstructions of the current ice volume and ice thickness distribution remain scarce, and accurate data are largely lacking at the local scale. Here, we present a detailed ice thickness distribution of Ashu-Tor, Bordu, Golubin and Kara-Batkak glaciers derived from radio-echo sounding measurements and modelling. All the ice thickness measurements are used to calibrate three individual models to estimate the ice thickness in inaccessible areas. A cross-validation between modelled and measured ice thickness for a subset of the data is performed to attribute a weight to every model and to assemble a final composite ice thickness distribution for every glacier. Results reveal the thickest ice on Ashu-Tor glacier with values up to 201 ± 12 m. The ice thickness measurements and distributions are also compared with estimates composed without the use of in situ data. These estimates approach the total ice volume well, but local ice thicknesses vary substantially. |
format |
Article in Journal/Newspaper |
author |
Van Tricht, Lander Huybrechts, Philippe Van Breedam, Jonas Fürst, Johannes J. Rybak, Oleg Satylkanov, Rysbek Ermenbaiev, Bakyt Popovnin, Victor Neyns, Robbe Paice, Chloë Marie Malz, Philipp |
spellingShingle |
Van Tricht, Lander Huybrechts, Philippe Van Breedam, Jonas Fürst, Johannes J. Rybak, Oleg Satylkanov, Rysbek Ermenbaiev, Bakyt Popovnin, Victor Neyns, Robbe Paice, Chloë Marie Malz, Philipp Measuring and inferring the ice thickness distribution of four glaciers in the Tien Shan, Kyrgyzstan |
author_facet |
Van Tricht, Lander Huybrechts, Philippe Van Breedam, Jonas Fürst, Johannes J. Rybak, Oleg Satylkanov, Rysbek Ermenbaiev, Bakyt Popovnin, Victor Neyns, Robbe Paice, Chloë Marie Malz, Philipp |
author_sort |
Van Tricht, Lander |
title |
Measuring and inferring the ice thickness distribution of four glaciers in the Tien Shan, Kyrgyzstan |
title_short |
Measuring and inferring the ice thickness distribution of four glaciers in the Tien Shan, Kyrgyzstan |
title_full |
Measuring and inferring the ice thickness distribution of four glaciers in the Tien Shan, Kyrgyzstan |
title_fullStr |
Measuring and inferring the ice thickness distribution of four glaciers in the Tien Shan, Kyrgyzstan |
title_full_unstemmed |
Measuring and inferring the ice thickness distribution of four glaciers in the Tien Shan, Kyrgyzstan |
title_sort |
measuring and inferring the ice thickness distribution of four glaciers in the tien shan, kyrgyzstan |
publisher |
Cambridge University Press (CUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1017/jog.2020.104 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143020001045 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 67, issue 262, page 269-286 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2020.104 |
container_title |
Journal of Glaciology |
container_volume |
67 |
container_issue |
262 |
container_start_page |
269 |
op_container_end_page |
286 |
_version_ |
1802646357917302784 |