Glacial lake evolution and glacier–lake interactions in the Poiqu River basin, central Himalaya, 1964–2017
Despite previous studies, glacier–lake interactions and future lake development in the Poiqu River basin, central Himalaya, are still not well understood. We mapped glacial lakes, glaciers, their frontal positions and ice flow from optical remote sensing data, and calculated glacier surface elevatio...
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ftdoajarticles:oai:doaj.org/article:65ff326317b54abc93a1293a26afb45e 2023-05-15T16:57:34+02:00 Glacial lake evolution and glacier–lake interactions in the Poiqu River basin, central Himalaya, 1964–2017 GUOQING ZHANG TOBIAS BOLCH SIMON ALLEN ANDREAS LINSBAUER WENFENG CHEN WEICAI WANG 2019-06-01T00:00:00Z https://doi.org/10.1017/jog.2019.13 https://doaj.org/article/65ff326317b54abc93a1293a26afb45e EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143019000133/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2019.13 0022-1430 1727-5652 https://doaj.org/article/65ff326317b54abc93a1293a26afb45e Journal of Glaciology, Vol 65, Pp 347-365 (2019) central Himalaya future lake development glacier and lake mapping glacier elevation change glacier–lake interaction Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2019 ftdoajarticles https://doi.org/10.1017/jog.2019.13 2023-03-12T01:30:57Z Despite previous studies, glacier–lake interactions and future lake development in the Poiqu River basin, central Himalaya, are still not well understood. We mapped glacial lakes, glaciers, their frontal positions and ice flow from optical remote sensing data, and calculated glacier surface elevation change from digital terrain models. During 1964–2017, the total glacial-lake area increased by ~110%. Glaciers retreated with an average rate of ~1.4 km2 a−1 between 1975 and 2015. Based on rapid area expansion (>150%), and information from previous studies, eight lakes were considered to be potentially dangerous glacial lakes. Corresponding lake-terminating glaciers showed an overall retreat of 6.0 ± 1.4 to 26.6 ± 1.1 m a−1 and accompanying lake expansion. The regional mean glacier elevation change was −0.39 ± 0.13 m a−1 while the glaciers associated with the eight potentially dangerous lakes lowered by −0.71 ± 0.05 m a−1 from 1974 to 2017. The mean ice flow speed of these glaciers was ~10 m a−1 from 2013 to 2017; about double the mean for the entire study area. Analysis of these data along with climate observations suggests that ice melting and calving processes play the dominant role in driving lake enlargement. Modelling of future lake development shows where new lakes might emerge and existing lakes could expand with projected glacial recession. Article in Journal/Newspaper Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Glacial Lake ENVELOPE(-129.463,-129.463,58.259,58.259) New Lakes ENVELOPE(177.649,177.649,51.951,51.951) Journal of Glaciology 65 251 347 365 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
central Himalaya future lake development glacier and lake mapping glacier elevation change glacier–lake interaction Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
central Himalaya future lake development glacier and lake mapping glacier elevation change glacier–lake interaction Environmental sciences GE1-350 Meteorology. Climatology QC851-999 GUOQING ZHANG TOBIAS BOLCH SIMON ALLEN ANDREAS LINSBAUER WENFENG CHEN WEICAI WANG Glacial lake evolution and glacier–lake interactions in the Poiqu River basin, central Himalaya, 1964–2017 |
topic_facet |
central Himalaya future lake development glacier and lake mapping glacier elevation change glacier–lake interaction Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
Despite previous studies, glacier–lake interactions and future lake development in the Poiqu River basin, central Himalaya, are still not well understood. We mapped glacial lakes, glaciers, their frontal positions and ice flow from optical remote sensing data, and calculated glacier surface elevation change from digital terrain models. During 1964–2017, the total glacial-lake area increased by ~110%. Glaciers retreated with an average rate of ~1.4 km2 a−1 between 1975 and 2015. Based on rapid area expansion (>150%), and information from previous studies, eight lakes were considered to be potentially dangerous glacial lakes. Corresponding lake-terminating glaciers showed an overall retreat of 6.0 ± 1.4 to 26.6 ± 1.1 m a−1 and accompanying lake expansion. The regional mean glacier elevation change was −0.39 ± 0.13 m a−1 while the glaciers associated with the eight potentially dangerous lakes lowered by −0.71 ± 0.05 m a−1 from 1974 to 2017. The mean ice flow speed of these glaciers was ~10 m a−1 from 2013 to 2017; about double the mean for the entire study area. Analysis of these data along with climate observations suggests that ice melting and calving processes play the dominant role in driving lake enlargement. Modelling of future lake development shows where new lakes might emerge and existing lakes could expand with projected glacial recession. |
format |
Article in Journal/Newspaper |
author |
GUOQING ZHANG TOBIAS BOLCH SIMON ALLEN ANDREAS LINSBAUER WENFENG CHEN WEICAI WANG |
author_facet |
GUOQING ZHANG TOBIAS BOLCH SIMON ALLEN ANDREAS LINSBAUER WENFENG CHEN WEICAI WANG |
author_sort |
GUOQING ZHANG |
title |
Glacial lake evolution and glacier–lake interactions in the Poiqu River basin, central Himalaya, 1964–2017 |
title_short |
Glacial lake evolution and glacier–lake interactions in the Poiqu River basin, central Himalaya, 1964–2017 |
title_full |
Glacial lake evolution and glacier–lake interactions in the Poiqu River basin, central Himalaya, 1964–2017 |
title_fullStr |
Glacial lake evolution and glacier–lake interactions in the Poiqu River basin, central Himalaya, 1964–2017 |
title_full_unstemmed |
Glacial lake evolution and glacier–lake interactions in the Poiqu River basin, central Himalaya, 1964–2017 |
title_sort |
glacial lake evolution and glacier–lake interactions in the poiqu river basin, central himalaya, 1964–2017 |
publisher |
Cambridge University Press |
publishDate |
2019 |
url |
https://doi.org/10.1017/jog.2019.13 https://doaj.org/article/65ff326317b54abc93a1293a26afb45e |
long_lat |
ENVELOPE(-129.463,-129.463,58.259,58.259) ENVELOPE(177.649,177.649,51.951,51.951) |
geographic |
Glacial Lake New Lakes |
geographic_facet |
Glacial Lake New Lakes |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 65, Pp 347-365 (2019) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143019000133/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2019.13 0022-1430 1727-5652 https://doaj.org/article/65ff326317b54abc93a1293a26afb45e |
op_doi |
https://doi.org/10.1017/jog.2019.13 |
container_title |
Journal of Glaciology |
container_volume |
65 |
container_issue |
251 |
container_start_page |
347 |
op_container_end_page |
365 |
_version_ |
1766049136802529280 |