Trend of China land water storage redistribution at medi- and large-spatial scales in recent five years by satellite gravity observations
Trend of China land water storage redistribution at medi- and large-spatial scales in recent five years by satellite gravity observations
复制标题
卫星重力观测近五年中国陆地中大空间尺度陆地水储量再分配趋势
DOI：
10.1007/s11434-008-0556-2
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发表时间：
2009-03
期刊：
影响因子：
--
通讯作者：
Yan HaoMing
中科院分区：
文献类型：
--
作者：
Xu HouZe;Zhong Min;Peng Peng;Duan JianBin;Zhu YaoZhong;Yan HaoMing
GRACE（重力恢复与气候实验）卫星重力使命为研究中长期尺度的陆地水团再分布提供了新的手段。利用2003 - 2007年GRACE卫星观测资料，估算了中国大陆水体的再分布。结果表明，在中北方地区、青藏高原、三峡库区、青海、四川、甘肃三省交界处和新疆阿尔金山地区，陆地水储量存在较大的增减区域。在前两个区域，水（冰）量明显减少。中北方地区的水团以2.4 cm/a当量水高的线性速率减少，5年间每年减少约52亿m3，同期河北省的水团减少约45亿m3。这与河北省水利厅估算的近30年超采地下水平均每年消耗水量40亿m3相一致局此外，GRACE还可以探测到2003年6月三峡大坝建设引起的约12万平方公里区域内约0.5cm等效水位高度的水团积累。在青海、四川、甘肃三省交界处，水质量增加达1.1cm/a。这显示这些地区的气候近年已逐渐变得潮湿。
The GRACE (Gravity Recovery and Climate Experiment) satellite gravity mission has provided a new method to study land water mass redistribution at medi- and long-spatial scales in recent years. We estimate continental water mass redistribution in China using GRACE observations during 2003 to 2007. The results show some large regions with increase or decrease of land water mass storage in the central northern region, Tibetan Plateau, the Three Gorges region, the place where Qinghai, Sichuan and Gansu provinces meet, and the Altun Mountains region in the Xinjiang Uygur Autonomous Region. In the first two regions, it is obvious that water (ice) mass storages are decreasing. Water mass in the central northern region decreases at a linear rate of 2.4 cm/a equivalent water height, equal to 5.2 billion cubic meters per year during the five years’ period, and water mass depletion in Hebei Province is ∼ 4.5 billion cubic meters per year in the same period, which is consistent with the average water mass depletion of 4.0 billion cubic meters per year of overused underground water in the recent 30 years estimated by Hebei Province Water Resources Bureau. Furthermore, GRACE can detect the water mass accumulation of ∼ 5 cm equivalent water height within the region spreading over about 0.12 million square kilometers due to the Three Gorges dam construction in June 2003. We also find a water mass gain of ∼ 1.1 cm/a in the areas where Qinghai, Sichuan and Gansu provinces meet. This indicates that the climate of these regions has been becoming gradually humid in recent years.
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DOI：
--
发表时间：
2004-03
期刊：
Progress in Astronomy
影响因子：
--
作者：
Cheng Huang;Xiaogong Hu
通讯作者：
Cheng Huang;Xiaogong Hu
影响因子：
5.4
作者：
S. Swenson;J. Wahr;P. Milly
通讯作者：
S. Swenson;J. Wahr;P. Milly
DOI：
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发表时间：
1981-12
期刊：
--
影响因子：
--
作者：
C. Jekeli
通讯作者：
C. Jekeli
影响因子：
56.9
作者：
Cox, CM;Chao, BF
通讯作者：
Chao, BF
影响因子：
--
作者：
S. Swenson;J. Wahr
通讯作者：
S. Swenson;J. Wahr