| 由GRACE RL05数据反演近10年中国大陆水储量及海水质量变化 |
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| 引用本文： | 卢飞,游为,范东明,黄强. 由GRACE RL05数据反演近10年中国大陆水储量及海水质量变化[J]. 测绘学报, 2015, 44(2): 160-167. DOI: 10.11947/j.AGCS.2015.20130753 |
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| 作者姓名： | 卢飞 游为 范东明 黄强 |
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| 作者单位： | 西南交通大学 测绘工程系, 四川 成都 611756 |
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| 基金项目： | 高等学校博士学科点专项(20120184120006) |
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| 摘 要： | 利用CSR(Center for Space Research)提供的GRACE RL05数据反演2003—2012年中国大陆水储量及其周边海域海水质量变化趋势。采用改进去相关滤波算法,使拟合最高阶次位系数为55及数据系列两端球谐位系数无须作为滑动窗口中心可直接拟合,去条带效果相比传统方法更明显。结果表明,中国陆地水储量在华北平原、三峡地区及青海、新疆、西藏交界地区变化较大。十年间,华北平原地下水以4.1±1.3mm/a速度减少,陆地水和地表水变化主要集中在2004—2008年;三峡水库3次蓄水引起地区等效水高变化分别为52mm、18mm及7mm;青海、西藏、新疆3省区交界地区地表水变化引起陆地水、地下水分别以10.6±0.9mm/a及11.6±1.0mm/a的速度增加。扣除冰川均衡调整后,GRACE反演海水质量的变化结果显示,东海、南海、黄海海水质量分别以4.23±0.9mm/a、1.33±0.9mm/a及3.09±1.1mm/a的速度上升,东海海水质量在长江入口附近上升速度最快。
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| 关 键 词： | GRACE 去相关滤波 陆地水 地下水 海水质量变化 |
| 收稿时间： | 2013-12-31 |
| 修稿时间： | 2014-08-13 |
Chinese Continental Water Storage and Ocean Water Mass Variations Analysis in Recent Ten Years Based on GEACE RL05 Data |
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| LU Fei,YOU Wei,FAN Dongming,HUANG Qiang. Chinese Continental Water Storage and Ocean Water Mass Variations Analysis in Recent Ten Years Based on GEACE RL05 Data[J]. Acta Geodaetica et Cartographica Sinica, 2015, 44(2): 160-167. DOI: 10.11947/j.AGCS.2015.20130753 |
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| Authors: | LU Fei YOU Wei FAN Dongming HUANG Qiang |
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| Affiliation: | Department of Surveying and Mapping Engineering, Southwest Jiaotong University, Chengdu 611756, China |
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| Abstract: | Chinese mainland water reserves and the variation tendency of the ocean water mass from2003 to 2012 are recovered with the data of GRACE RL05 provided by Center for Space Research .An improved de‐correlated filtering algorithmis presented .which sets the highest order coefficient to be fitted up to 55 and the border coefficient can also be directly fitted without being used as center of the sliding window . The algorithm is proposed with significant decrease in stripes compared with traditional algorithms .The results show that the area ,where terrestrial water changes a lot ,are the north China plain ,the three gorges region ,the border region of Qinghai ,Xinjiang and Tibet respectively .During the recent ten years , the groundwater of north China plain reduces at the rate of 4 .1 ± 1 .3 mm/a ,The change of ground water and surface water are mainly between 2004 and 2008 .GRACE can detect the prominent of mass change of the Three Gorges Reservoir in the form of equivalent water height ,which are 52 mm、18 mm and 7 mm respec‐tively .The ground water and terrestrial water in the border region of Qinghai ,Xinjiang and Tibet have increased at the rate of 10 .6 ± 0 .9 mm/a 、11 .6 ± 1 .1 mm/a respectively .The results of GRACE data show that the ocean mass rise trend of East China Sea ,South China Sea and YellowChina Sea are 4 .23 ± 0 .9 mm/a 、1 .33 ± 0 .9 mm/a 、3 .09 ± 1 .1 mm/a ,respectively after the deduction of the glacial isostatic adjustment .The ocean water mass of East China Sea rises significantly faster than the other two areas . |
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| Keywords: | GRACE de-correlation filter terrestrial water groundwater ocean water mass variations |
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