Spatial-Temporal Differentiation of Supra- and Sub-Permafrost Groundwater Contributions to River Runoff in the Eurasian Arctic and Qinghai-Tibet Plateau Permafrost Regions
Supra- and sub-permafrost groundwater are the two main components of groundwater in permafrost regions. However, due to the lack of groundwater observational data, the spatial-temporal differentiation of these groundwater components in permafrost basins remains unclear. Based on flow data from 17 hy...
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AMER GEOPHYSICAL UNION
2024
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Online Access: | http://ir.imde.ac.cn/handle/131551/57940 https://doi.org/10.1029/2023WR035913 |
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/57940 2024-06-02T08:01:59+00:00 Spatial-Temporal Differentiation of Supra- and Sub-Permafrost Groundwater Contributions to River Runoff in the Eurasian Arctic and Qinghai-Tibet Plateau Permafrost Regions Wang, Zhiwei Sun, Shouqin Wang, Genxu Song, Chunlin 2024-03-01 http://ir.imde.ac.cn/handle/131551/57940 https://doi.org/10.1029/2023WR035913 英语 eng AMER GEOPHYSICAL UNION WATER RESOURCES RESEARCH http://ir.imde.ac.cn/handle/131551/57940 doi:10.1029/2023WR035913 permafrost groundwater components supra-permafrost groundwater sub-permafrost groundwater ungauged basins FLOW BASEFLOW IMPACTS CLIMATE SOIL SITES THAW Environmental Sciences & Ecology Marine & Freshwater Biology Water Resources Environmental Sciences Limnology 期刊论文 2024 ftchinacadscimhe https://doi.org/10.1029/2023WR035913 2024-05-06T01:12:01Z Supra- and sub-permafrost groundwater are the two main components of groundwater in permafrost regions. However, due to the lack of groundwater observational data, the spatial-temporal differentiation of these groundwater components in permafrost basins remains unclear. Based on flow data from 17 hydrological stations in five permafrost rivers within the Eurasian Arctic and Qinghai-Tibet Plateau permafrost regions, this study tries to determine the proportion of supra- and sub-permafrost groundwater through the corresponding relationship between baseflow separation and baseflow index. The results showed that the annual average contribution of supra- and sub-permafrost groundwater in river runoff to total streamflow in the Yangtze River source basin was 36.81% and 14.56%, respectively. Correspondingly, the Yellow River source basin was 36.58% and 24.46%, the Ob River basin was 37.05% and 26.83%, the Yenisei River basin was 28.80% and 36.56%, and the Lena River basin was 39.13% and 9.54%. Over the past 50-80 years, the ratio of sub-permafrost groundwater discharge to river runoff and the flux of sub-permafrost groundwater have shown an increasing trend in all study basins, which was significantly affected by air temperature and permafrost area. Relative contribution of supra-permafrost groundwater exhibits a significant positive correlation with precipitation and permafrost area. Air temperature has both positive and negative effects on supra-permafrost groundwater discharge, leading to a rising or falling trend of supra-permafrost groundwater discharge. In the future, it is necessary to further explore the complex effects of groundwater discharge variations on streamflow in permafrost regions under climate warming. Report Arctic lena river ob river permafrost IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Arctic Yenisei River ENVELOPE(84.738,84.738,69.718,69.718) Water Resources Research 60 3 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
permafrost groundwater components supra-permafrost groundwater sub-permafrost groundwater ungauged basins FLOW BASEFLOW IMPACTS CLIMATE SOIL SITES THAW Environmental Sciences & Ecology Marine & Freshwater Biology Water Resources Environmental Sciences Limnology |
spellingShingle |
permafrost groundwater components supra-permafrost groundwater sub-permafrost groundwater ungauged basins FLOW BASEFLOW IMPACTS CLIMATE SOIL SITES THAW Environmental Sciences & Ecology Marine & Freshwater Biology Water Resources Environmental Sciences Limnology Wang, Zhiwei Sun, Shouqin Wang, Genxu Song, Chunlin Spatial-Temporal Differentiation of Supra- and Sub-Permafrost Groundwater Contributions to River Runoff in the Eurasian Arctic and Qinghai-Tibet Plateau Permafrost Regions |
topic_facet |
permafrost groundwater components supra-permafrost groundwater sub-permafrost groundwater ungauged basins FLOW BASEFLOW IMPACTS CLIMATE SOIL SITES THAW Environmental Sciences & Ecology Marine & Freshwater Biology Water Resources Environmental Sciences Limnology |
description |
Supra- and sub-permafrost groundwater are the two main components of groundwater in permafrost regions. However, due to the lack of groundwater observational data, the spatial-temporal differentiation of these groundwater components in permafrost basins remains unclear. Based on flow data from 17 hydrological stations in five permafrost rivers within the Eurasian Arctic and Qinghai-Tibet Plateau permafrost regions, this study tries to determine the proportion of supra- and sub-permafrost groundwater through the corresponding relationship between baseflow separation and baseflow index. The results showed that the annual average contribution of supra- and sub-permafrost groundwater in river runoff to total streamflow in the Yangtze River source basin was 36.81% and 14.56%, respectively. Correspondingly, the Yellow River source basin was 36.58% and 24.46%, the Ob River basin was 37.05% and 26.83%, the Yenisei River basin was 28.80% and 36.56%, and the Lena River basin was 39.13% and 9.54%. Over the past 50-80 years, the ratio of sub-permafrost groundwater discharge to river runoff and the flux of sub-permafrost groundwater have shown an increasing trend in all study basins, which was significantly affected by air temperature and permafrost area. Relative contribution of supra-permafrost groundwater exhibits a significant positive correlation with precipitation and permafrost area. Air temperature has both positive and negative effects on supra-permafrost groundwater discharge, leading to a rising or falling trend of supra-permafrost groundwater discharge. In the future, it is necessary to further explore the complex effects of groundwater discharge variations on streamflow in permafrost regions under climate warming. |
format |
Report |
author |
Wang, Zhiwei Sun, Shouqin Wang, Genxu Song, Chunlin |
author_facet |
Wang, Zhiwei Sun, Shouqin Wang, Genxu Song, Chunlin |
author_sort |
Wang, Zhiwei |
title |
Spatial-Temporal Differentiation of Supra- and Sub-Permafrost Groundwater Contributions to River Runoff in the Eurasian Arctic and Qinghai-Tibet Plateau Permafrost Regions |
title_short |
Spatial-Temporal Differentiation of Supra- and Sub-Permafrost Groundwater Contributions to River Runoff in the Eurasian Arctic and Qinghai-Tibet Plateau Permafrost Regions |
title_full |
Spatial-Temporal Differentiation of Supra- and Sub-Permafrost Groundwater Contributions to River Runoff in the Eurasian Arctic and Qinghai-Tibet Plateau Permafrost Regions |
title_fullStr |
Spatial-Temporal Differentiation of Supra- and Sub-Permafrost Groundwater Contributions to River Runoff in the Eurasian Arctic and Qinghai-Tibet Plateau Permafrost Regions |
title_full_unstemmed |
Spatial-Temporal Differentiation of Supra- and Sub-Permafrost Groundwater Contributions to River Runoff in the Eurasian Arctic and Qinghai-Tibet Plateau Permafrost Regions |
title_sort |
spatial-temporal differentiation of supra- and sub-permafrost groundwater contributions to river runoff in the eurasian arctic and qinghai-tibet plateau permafrost regions |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2024 |
url |
http://ir.imde.ac.cn/handle/131551/57940 https://doi.org/10.1029/2023WR035913 |
long_lat |
ENVELOPE(84.738,84.738,69.718,69.718) |
geographic |
Arctic Yenisei River |
geographic_facet |
Arctic Yenisei River |
genre |
Arctic lena river ob river permafrost |
genre_facet |
Arctic lena river ob river permafrost |
op_relation |
WATER RESOURCES RESEARCH http://ir.imde.ac.cn/handle/131551/57940 doi:10.1029/2023WR035913 |
op_doi |
https://doi.org/10.1029/2023WR035913 |
container_title |
Water Resources Research |
container_volume |
60 |
container_issue |
3 |
_version_ |
1800746488903499776 |