Contribution of supra-permafrost discharge to thermokarst lake water balances on the northeastern Qinghai-Tibet Plateau
Abstract The seasonal hydrological mechanisms of two thermokarst lakes on the northeastern Qinghai-Tibet Plateau (QTP) were characterized by three-year intensive field observations and a water balance model. In three ice-free seasons, the supra-permafrost discharge contributed a mean ratio of over 1...
Published in: | Journal of Hydrology |
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ftulancaster:oai:eprints.lancs.ac.uk:88550 2023-08-27T04:09:55+02:00 Contribution of supra-permafrost discharge to thermokarst lake water balances on the northeastern Qinghai-Tibet Plateau Pan, Xicai Yu, Qihao You, Yanhui Pan Chun, Kwok Shi, Xiaogang Li, Yanping 2017-12 application/pdf https://eprints.lancs.ac.uk/id/eprint/88550/ https://eprints.lancs.ac.uk/id/eprint/88550/1/1_s2.0_S0022169417307217_main.pdf https://doi.org/10.1016/j.jhydrol.2017.10.046 en eng https://eprints.lancs.ac.uk/id/eprint/88550/1/1_s2.0_S0022169417307217_main.pdf Pan, Xicai and Yu, Qihao and You, Yanhui and Pan Chun, Kwok and Shi, Xiaogang and Li, Yanping (2017) Contribution of supra-permafrost discharge to thermokarst lake water balances on the northeastern Qinghai-Tibet Plateau. Journal of Hydrology, 555. pp. 621-630. ISSN 0022-1694 creative_commons_attribution_noncommercial_noderivatives_4_0_international_license Journal Article PeerReviewed 2017 ftulancaster https://doi.org/10.1016/j.jhydrol.2017.10.046 2023-08-03T22:32:09Z Abstract The seasonal hydrological mechanisms of two thermokarst lakes on the northeastern Qinghai-Tibet Plateau (QTP) were characterized by three-year intensive field observations and a water balance model. In three ice-free seasons, the supra-permafrost discharge contributed a mean ratio of over 170% of the precipitation. In the ice-cover seasons, the supra-permafrost discharge contribution varied between -20% and 22% of the water storage change. Results show that a large portion of the lake water storage change is because of the supra-permafrost discharge resulting from precipitation. Furthermore, a precipitation-subsurface runoff function is preliminarily identified in which the supra-permafrost discharge nonlinearly increased with more precipitation. Our results show that the recent lake expansion is linked with increasing supra-permafrost discharge dominated by precipitation. This study also suggests that we need to pay attention to the nonlinear increase of precipitation-controlled supra-permafrost discharge on the large lake expansion at the catchment scale in the QTP region, instead of only looking at the inputs (e.g., precipitation and river discharge) as shown in the previous studies. Article in Journal/Newspaper Ice permafrost Thermokarst Lancaster University: Lancaster Eprints Journal of Hydrology 555 621 630 |
institution |
Open Polar |
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Lancaster University: Lancaster Eprints |
op_collection_id |
ftulancaster |
language |
English |
description |
Abstract The seasonal hydrological mechanisms of two thermokarst lakes on the northeastern Qinghai-Tibet Plateau (QTP) were characterized by three-year intensive field observations and a water balance model. In three ice-free seasons, the supra-permafrost discharge contributed a mean ratio of over 170% of the precipitation. In the ice-cover seasons, the supra-permafrost discharge contribution varied between -20% and 22% of the water storage change. Results show that a large portion of the lake water storage change is because of the supra-permafrost discharge resulting from precipitation. Furthermore, a precipitation-subsurface runoff function is preliminarily identified in which the supra-permafrost discharge nonlinearly increased with more precipitation. Our results show that the recent lake expansion is linked with increasing supra-permafrost discharge dominated by precipitation. This study also suggests that we need to pay attention to the nonlinear increase of precipitation-controlled supra-permafrost discharge on the large lake expansion at the catchment scale in the QTP region, instead of only looking at the inputs (e.g., precipitation and river discharge) as shown in the previous studies. |
format |
Article in Journal/Newspaper |
author |
Pan, Xicai Yu, Qihao You, Yanhui Pan Chun, Kwok Shi, Xiaogang Li, Yanping |
spellingShingle |
Pan, Xicai Yu, Qihao You, Yanhui Pan Chun, Kwok Shi, Xiaogang Li, Yanping Contribution of supra-permafrost discharge to thermokarst lake water balances on the northeastern Qinghai-Tibet Plateau |
author_facet |
Pan, Xicai Yu, Qihao You, Yanhui Pan Chun, Kwok Shi, Xiaogang Li, Yanping |
author_sort |
Pan, Xicai |
title |
Contribution of supra-permafrost discharge to thermokarst lake water balances on the northeastern Qinghai-Tibet Plateau |
title_short |
Contribution of supra-permafrost discharge to thermokarst lake water balances on the northeastern Qinghai-Tibet Plateau |
title_full |
Contribution of supra-permafrost discharge to thermokarst lake water balances on the northeastern Qinghai-Tibet Plateau |
title_fullStr |
Contribution of supra-permafrost discharge to thermokarst lake water balances on the northeastern Qinghai-Tibet Plateau |
title_full_unstemmed |
Contribution of supra-permafrost discharge to thermokarst lake water balances on the northeastern Qinghai-Tibet Plateau |
title_sort |
contribution of supra-permafrost discharge to thermokarst lake water balances on the northeastern qinghai-tibet plateau |
publishDate |
2017 |
url |
https://eprints.lancs.ac.uk/id/eprint/88550/ https://eprints.lancs.ac.uk/id/eprint/88550/1/1_s2.0_S0022169417307217_main.pdf https://doi.org/10.1016/j.jhydrol.2017.10.046 |
genre |
Ice permafrost Thermokarst |
genre_facet |
Ice permafrost Thermokarst |
op_relation |
https://eprints.lancs.ac.uk/id/eprint/88550/1/1_s2.0_S0022169417307217_main.pdf Pan, Xicai and Yu, Qihao and You, Yanhui and Pan Chun, Kwok and Shi, Xiaogang and Li, Yanping (2017) Contribution of supra-permafrost discharge to thermokarst lake water balances on the northeastern Qinghai-Tibet Plateau. Journal of Hydrology, 555. pp. 621-630. ISSN 0022-1694 |
op_rights |
creative_commons_attribution_noncommercial_noderivatives_4_0_international_license |
op_doi |
https://doi.org/10.1016/j.jhydrol.2017.10.046 |
container_title |
Journal of Hydrology |
container_volume |
555 |
container_start_page |
621 |
op_container_end_page |
630 |
_version_ |
1775351598623490048 |