重力场恢复与气候实验的石羊河流域水储量变化  

The water storage change in Shiyang River basin by the GRACE

作　　者：邵明 杨国林 寇瑞雄 安旭伟 SHAO Ming;YANG Guolin;KOU Ruixiong;AN Xuwei(Faculty of Geomatics,Lanzhou Jiaotong University,Lanzhou 730070,China;National-Local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring,Lanzhou 730070,China;Gansu Provincial Engineering Laboratory for National Geographic State Monitoring,Lanzhou 730070,China)

机构地区：[1]兰州交通大学测绘与地理信息学院,兰州730070 [2]地理国情监测技术应用国家地方联合工程研究中心,兰州730070 [3]甘肃省地理国情监测工程实验室,兰州730070

出　　处：《测绘科学》2021年第1期49-55,共7页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41764001);兰州交通大学优秀平台支持项目(201806)。

摘　　要：为了更好地从空间尺度显示石羊河流域水储量的变化情况,该文利用2003年1月至2014年12月GRACE RL06重力场数据计算其陆地水储量变化,对数据进行预处理以及去相关滤波和300km高斯平滑处理,并利用流域内4个气象站的降水平均数据与GRACE、GLDAS的结果进行对比分析。结果表明,GRACE反演结果与GLDAS水文模型变化趋势基本一致,时间上呈现明显季节性变化,研究区水储量整体呈现0.93mm/a的上升趋势,期间水储量变化波动较大主要与季节性降水有关。In order to better display the water storage change from the spatial scale in the Shiyang River Basin,the terrestrial water storage change was calculated by using the GRACE RL06 monthly gravity data from January 2003to December 2014.The data preprocessing,decorrelation filtering and 300 km Gaussian smoothing were combined.By comparing the precipitation average data of four meteorological stations in the basin with the results of GRACE and GLDAS,The results of GRACE were basically consistent with the GLDAS hydrological model.Meanwhile the seasonal changes were obvious in the results.Additionally,the water storage were increasing at 0.93mm/a in the study area,and the water storage change fluctuated greatly during the period,which was mainly related to seasonal precipitation.

关 键 词：重力场恢复与气候实验 石羊河 陆地水储量变化 GLDAS水文模型 

分 类 号：P223[天文地球—大地测量学与测量工程]