基于卫星重力时变重力场的陆地水储量变化研究  

Research on the Terrestrial Water Storage Changes Based on Gravity Time-Varying Gravity Field

作　　者：黄征凯 赵泽惠 温志强 聂启祥[1] 王海城[3] Huang Zhengkai;Zhao Zehui;Wen Zhiqiang;Nie Qixiang;Wang Haicheng(School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;Hebei Research Institute of Investigation and Design of Water Conservancy and Hydropower,Tianjin 300250,China)

机构地区：[1]华东交通大学土木建筑学院,江西南昌330013 [2]中国科学院大学地球与行星科学学院,北京100049 [3]河北省水利水电勘测设计研究院集团有限公司,天津300250

出　　处：《华东交通大学学报》2022年第5期45-51,共7页Journal of East China Jiaotong University

基　　金：国家自然科学基金项目(42104023);江西理工大学高层次人才科研启动项目(205200100564)。

摘　　要：利用卫星重力技术监测全球陆地水储量变化(TWSC)兼具重要的实用价值和科学研究意义。基于GRACE(Gravity recovery and climate experiment)时变重力场模型研究了2002—2020年全球部分流域水储量变化,并探讨了气候和人为因素对区域水储量变化的影响。研究结果显示:地理区域相近流域的水储量时间序列具有相似的周期和振幅,而位于南北半球的临近流域水储量变化则呈现了相反的周期信号;墨累-达令流域内的水储量受到降水和蒸发共同影响,而印度河-恒河流域由于过度抽取地下水造成流域水储量不断下降;亚马逊流域内的GARCE和GLDAS (Global land data assimilation systems)反演水储量变化的相关性达到0.86,同时发现GRACE在探测区域干旱事件方面有独特的优势。There are both important practical value and scientific research significance of monitoring the global terrestrial water storage change(TWSC)by satellite gravity technology. Based on the GRACE time-varying gravitational field model, this paper studies the TWSC of global typical river basins from 2002 to 2020, and discusses the influence of climate and human factors on the regional TWSC. The research results show that the TWSC in similar geographic regions have similar cycles and amplitudes, while the TWSC of adjacent watersheds located in the northern and southern hemispheres present opposite periodic signals. The TWSC in the Murray-Darling Basin is affected by precipitation and evaporation, while the Indus-Ganga River Basin has been declining due to excessive groundwater extraction. The correlation between GARCE and GLDAS acquired water storage changes in the Amazon basin reached 0.86. At the same time, it was found that GRACE has a unique advantage in detecting regional drought events.

关 键 词：重力恢复和气候实验 陆地水储量 等效水高 厄尔尼诺-南方涛动 

分 类 号：P228[天文地球—大地测量学与测量工程]