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《Chinese Journal of Geophysics》 2007-03
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Water storage changes in Three Gorges water systems area inferred from GRACE time-variable gravity data

WANG Han-Sheng~1, WANG Zhi-Yong~ 1,2 , YUAN Xu-Dong~ 1,2 , Wu Patrick~ 3 , Rangelova Elena~41 Key Laboratory of Dynamic Geodesy, Institute of Geodesy & Geophysics, Chinese Academy of Sciences, Wuhan 430077, China2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China3 Department of Geology & Geophysics, University of Calgary, Calgary T2N 1N4, Canada4 Department of Geomatics Engineering, University of Calgary, Calgary T2N 1N4, Canada  
Twenty-two monthly water storage changes are predicted for the supply water systems of the Three Gorges Reservoir from GRACE time-variable gravity data. In order to assess the results, the CPC hydrological models are used to establish two benchmarks. It is found that the results are very reasonable in this area. For Gaussian averaging radius of 1000 km, the total water storage changes in the area have a peak-to-peak value of 14 cm, and the annual component has an amplitude of 5.8 cm and a phase of -40.8 days. The RMS difference compared with the inversion results with the same averaging radius using the synthetic gravity data from the CPC models is 1.3 cm for the total water storage changes, and the differences are 0.1 cm and 1.0 day for the amplitude and phase of the annual component. However, for checking the ability of GRACE to monitor the true water storage changes within the area, it is also very necessary to compare the inversion results from GRACE gravity models with the true average results of CPC models. For this comparison the RMS difference is 2.1 cm for the total water storage changes, and the differences are 1.7 cm and 9.3 days for the amplitude and phase of the annual component. Comparing the assessment results of the two comparisons, it is found that the first comparison has overestimated the effectiveness of GRACE. Nevertheless, the second comparison shows that the monthly water storage changes can be roughly determined from GRACE data in this area.
【Fund】: 国家自然科学基金(40574010);; 中国科学院优秀博士学位论文获得者科研启动专项资金(040113)(Wu Patrick由加拿大NSERC的DiscoveryGrant资助)资助
【CateGory Index】: TV697.1
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【Citations】
Chinese Journal Full-text Database 4 Hits
1 ZHOU Xu-Hua~1,2,HSU Houtse~1,WU Bin~2,PENG Bi-Bo~1,LU Yang~11 Key Laboratory of Dynamic Geodesy,Institute of Geodesy & Geophysics,Chinese Academy of Sciences,Wuhan 430077,China2 Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China;Earth's gravity field derived from GRACE satellite tracking data[J];Chinese Journal of Geophysics;2006-03
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【Co-citations】
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3 ZHANG Han-wei~①,LIU Xue-qian~②,DAI Guang-ping~③(①Institute of Geodesy and Geophysics,Chinese Academy of Sciences,Wuhan,430077,China;②Seismological bureau of Henan province,Zhengzhou,450000,China;③Shockproof and disaster-reduction's bureau of Dongchuan region in kunming city of Yunnan province,Kunming 654100,China);The researchful progress of dynamical theory for elasticity's earth rotation[J];Science of Surveying and Mapping;2004-05
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5 ZHANG Li-ping 1 ,YANG Da-yuan 2 ,ZHU Da-kui 2 (1.Department of Resource Sciences,College of Resource and Environment Sciences,Zhejiang University,Hangzhou310029,China;2.Department of Urban and Resources Sciences,Nanjing University,Nanjing210093,China);RELATIONSHIP BETWEEN THE TOLERANCE LOSS VALUE OF SOIL AND THE WEATHERING AND DENUDATION RATE OF PARENT ROCK[J];Resources and Environment in the Yangtze Basin;2003-04
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7 //by Bao Tengfei,Gu Chongshi,Zhang Zhicheng and Li Taofan//College of Water Conservancy&Hydropower Engineering,Hohai University;Behavior analysis of Three Gorges Project shiplift dam block during construction[J];Large Dam and Safety;2003-01
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10 Liang Xiaoxi and Du Ruilin(Istitute of Seismology,CEA,Wuhan 430071);NUMERICAL SIMULATION OF VERTICAL CRUSTAL DEFORMATION IN THREE GORGES AREA BASED ON SRTM[J];Journal of Geodesy and Geodynamics;2008-04
【Secondary Citations】
Chinese Journal Full-text Database 7 Hits
1 ZHANG Wei min, WANG Yong, ZHANG Chi jun (Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077,China);The Preliminary Analysis of the Effects of the Soil Moisture on Gravity Observations[J];Acta Geodaetica Et Cartographic Sinica;2001-02
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