首页|Impacts of artificial dams on terrestrial water storage changes and the Earth's elastic load response during 1950-2016:A case study of medium and large reservoirs in Chinese mainland

Impacts of artificial dams on terrestrial water storage changes and the Earth's elastic load response during 1950-2016:A case study of medium and large reservoirs in Chinese mainland

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
The construction of dams for intercepting and storing water has altered surface water distributions,land-sea water exchanges,and the load response of the solid Earth.The lack of accurate estimation of reservoir properties through the land surface and hydrological models can lead to water storage simulation and extraction errors.This impact is particularly evident in many artificial reservoirs in China.The study aims to comprehensively assess the spatiotemporal distribution and trends of water storage in medium and large reservoirs(MLRs)in Chinese mainland during 1950-2016,and to investigate the gravity,displacement,and strain effects induced by the reservoir mass concentration using the load elasticity theory.In addition,the impoundment contributions of MLRs to the relative sea level changes were assessed using a sea-level equation.The results show impoundment increases in the MLRs during 1950-2016,particularly in the Yangtze River(Changjiang)and southern basins,causing significant elastic load effects in the surrounding areas of the reservoirs and increasing the relative sea level in China's offshore.However,long-term groundwater estimation trends are overestimated and underestimated in the Yangtze River and southwestern basins,respectively,due to the neglect of the MLRs impacts or the uncertainty of the hydrological model's output(e.g.,soil moisture,etc.).The construction of MLRs may reduce the water mass input from land to the ocean,thus slowing global sea level rise.The results of the impact of human activities on the regional water cycle provide important references and data support for improving the integration of hydrological models,evaluating Earth's viscoelastic responses under long-term reservoir storage,enhancing in-situ and satellite geodetic measurements,and identifying the main factors driving sea level changes.

Man-made damsTerrestrial water storageElastic load responseSea level changesChinese mainland

Linsong Wang、Mingtao Zhu、Yulong Zhong、Jianwei Sun、Zhenran Peng

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Hubei Subsurface Multiscale Image Key Laboratory,School of Geophysics and Geomatics,China University of Geosciences,Wuhan 430074,China

Three Gorges Research Center for Geo-hazard,Ministry of Education,China University of Geosciences,Wuhan 430074,China

School of Geography and Information Engineering,China University of Geosciences,Wuhan 430078,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

42274110423741064187409041504065

2024

10.1016/j.geog.2023.07.009

大地测量与地球动力学(英文版)
中国地震局地震研究所

大地测量与地球动力学(英文版)

EI
影响因子：0.568
ISSN：1674-9847
年,卷(期)：2024.15(3)
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