不同环境负载产品在北京及周边地区改正效果  

Correction Effect of Different Environmental Loading Products in Beijing and Its Surrounding Areas

作　　者：马一方 范文蓝 杨艺林 闫睿[1] 周晓慧[4] MA Yifang;FAN Wenlan;YANG Yilin;YAN Rui;ZHOU Xiaohui(Beijing Earthquake Agency,28 Suzhou Street,Beijing 100080,China;GNSS Research Center,Wuhan University,129 Luoyu Road,Wuhan 430079,China;Nordic Volcanological Center,University of Iceland,2 S mundargata,Reykjavik IS 102,Iceland;School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China)

机构地区：[1]北京市地震局,北京市100080 [2]武汉大学卫星导航定位技术研究中心,武汉市430079 [3]冰岛大学北欧火山研究所,雷克雅未克S mundargata 2号,IS 102 [4]武汉大学测绘学院,武汉市430079

出　　处：《大地测量与地球动力学》2025年第4期403-408,共6页Journal of Geodesy and Geodynamics

基　　金：北京市地震局技术微创新项目(BJWC-2024001);国家自然科学基金(42274035)。

摘　　要：利用GFZ和GGFC提供的基于不同输入数据的环境负载改正产品,对北京及周边地区50个GNSS测站的大气负载、非潮汐海洋负载和水文负载进行改正,选取环境负载改正前后的GNSS坐标时间序列RMS减少率等作为指标,对比不同产品的影响量级和改正效果。结果表明,GNSS测站受到大气负载影响最大,水文负载次之,非潮汐海洋负载影响可忽略。除LNJZ站外,其余测站经GFZ和GGFC大气负载产品改正后,GNSS坐标时间序列垂向RMS值均减小,且RMS减少率均值超过15%,说明大气负载对研究区域内GNSS测站垂向运动的影响不可忽略。GFZ和GGFC的大气负载产品改正效果相当,GFZ MPIOM的非潮汐海洋负载产品和GGFC GLDAS的水文负载产品改正效果更优。This study utilizes the environmental loading products derived from different data sources provided by GFZ and GGFC,to correct the atmospheric loading,non-tidal ocean loading and hydrological loading of 50 GNSS stations in Beijing and its surrounding areas.The RMS reduction rate of the GNSS coordinate time series after environmental loading corrections is used to evaluate the performance of different products.The results show that the impact of atmospheric loading is more significant than that of hydrological loading,and the impact of non-tidal ocean loading can be ignored.The RMS values of all the GNSS height time series except that of LNJZ station are reduced after the correction of atmospheric loading products provided by GFZ and GGFC,and the average RMS reduction rate is more than 15%,indicating that the impact of atmospheric loading on the vertical motion of GNSS stations in the study area is nonnegligible.The correction effect of different atmospheric loading products provided by GFZ and GGFC are similar,the correction effect of non-tidal ocean loading products derived from MPIOM provided by GFZ is better,and the correction effect of hydrological loading products derived from GLDAS provided by GGFC is better.

关 键 词：环境负载产品 GNSS坐标时间序列 GFZ GGFC 北京及周边地区 

分 类 号：P223[天文地球—大地测量学与测量工程] P228[天文地球—测绘科学与技术]