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Article

Remote Sensing Investigation of the Offset Effect between Reservoir Impoundment and Glacier Meltwater Supply in Tibetan Highland Catchment

1
Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
2
University of Chinese Academy of Sciences, Beijing 100049, China
3
College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
4
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
*
Author to whom correspondence should be addressed.
Academic Editor: Chang Huang
Water 2021, 13(9), 1307; https://doi.org/10.3390/w13091307
Received: 7 April 2021 / Revised: 29 April 2021 / Accepted: 30 April 2021 / Published: 7 May 2021
This article presents multi-source remote sensing measurements to quantify the water impoundment and regulation of the Zhikong Reservoir (ZKR) and Pangduo Reservoir (PDR), together with the estimation of the glacier mass balance to explore whether the increased glacier meltwater supply can buffer the influences of the reservoir impoundment to some degree in the Tibetan highland catchment. The ZKR and PDR are two reservoirs constructed on the upper Lhasa River that originate from the Nyainqentanglha glaciers in the remote headwater in the Tibetan Plateau (TP) and lacks historical in situ hydrological observations in the long term. Therefore, the Joint Research Center (JRC) Global Surface Water dataset (GSW), and the Shuttle Radar Topography Mission (SRTM) digital elevation model (DEM) data were used for estimating the total amount of water storage of the two reservoirs, and the SRTM and TanDEM-X DEMs were used for estimating the glacier mass balance. The result shows that the total amount of water impounded by reservoirs is 0.76 Gt, roughly 54% of their design capacities. The mass balance of the glaciers is estimated by comparing the elevation changes between the SRTM and TanDEM-X DEMs. The glaciers in this region melt at an average rate of 0.09 ± 0.02 Gt·year−1 from 2000 to circa 2013, and the impounded water of these reservoirs is comparable to the amount of glacier-fed meltwater in eight years. View Full-Text
Keywords: reservoir; runoff; glacier; multi-source remote sensing; DEM; Lhasa River; Tibetan Plateau reservoir; runoff; glacier; multi-source remote sensing; DEM; Lhasa River; Tibetan Plateau
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MDPI and ACS Style

Zhu, J.; Song, C.; Ke, L.; Liu, K.; Chen, T. Remote Sensing Investigation of the Offset Effect between Reservoir Impoundment and Glacier Meltwater Supply in Tibetan Highland Catchment. Water 2021, 13, 1307. https://doi.org/10.3390/w13091307

AMA Style

Zhu J, Song C, Ke L, Liu K, Chen T. Remote Sensing Investigation of the Offset Effect between Reservoir Impoundment and Glacier Meltwater Supply in Tibetan Highland Catchment. Water. 2021; 13(9):1307. https://doi.org/10.3390/w13091307

Chicago/Turabian Style

Zhu, Jingying, Chunqiao Song, Linghong Ke, Kai Liu, and Tan Chen. 2021. "Remote Sensing Investigation of the Offset Effect between Reservoir Impoundment and Glacier Meltwater Supply in Tibetan Highland Catchment" Water 13, no. 9: 1307. https://doi.org/10.3390/w13091307

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