基于CORS站的中国大陆地区大气负荷形变特征研究  

Study of characteristics of atmospheric load deformation in China's Mainland based on CORS station

作　　者：岳彩亚 党亚民[2,3] 许长辉[2] 谷守周[2] 戴华阳[1] YUE Caiya;DANG Yamin;XU Changhui;GU Shouzhou;DAI Huayang(College of Geoscience and Surveying Engineering,China University of Ming and Technology(Beijing),Beijing 100083,China;Chinese Academy of Surveying&Mapping,Beijing 100830,China;College of Geomatics,Shandong University of Science and Technology,Qingdao,Shandong 266590,China)

机构地区：[1]中国矿业大学(北京)地球科学与测绘工程学院,北京100083 [2]中国测绘科学研究院,北京100830 [3]山东科技大学测绘科学与工程学院,山东青岛266590

出　　处：《中国矿业大学学报》2020年第2期395-402,共8页Journal of China University of Mining & Technology

基　　金：国家自然科学基金项目(41874042,41974010);全球连续监测评估系统项目(CFZX0301040308-06);中国测绘科学研究院科研业务费项目(AR1901,AR1930)。

摘　　要：基于月值的大气压变化的球谐函数模型和全球卫星导航系统(GNSS)基准站实测数据,提出了一种数据处理策略,并建立了一种大气压变化与地壳形变相关性模型.基于此,对中国大陆地区大气负荷的形变特征和变化规律进行了研究.分析了中国大陆地区大气荷载响应特征,可知大气质量变化主要影响我国的西北地区、华东东北部、华北东部,量级可达20 mm左右,其次是东北地区和华北北部,量级约为13 mm左右.对不同区域GNSS基准站垂向序列进行大气荷载修正,发现西北干旱地区主要受大气负荷形变影响,经大气负荷修正后的振幅波动较为平滑;而川滇和青藏高原地区在修正后振幅变大,表明此区域受构造运动和水迁徙负荷影响较为严重.基于GNSS台站进行了大气压变化与地壳形变相关性分析,可知当大气荷载同等变化时,华中地区、川滇地区和华东北部靠近沿海地区产生形变程度较大.In this paper,based on the spherical harmonic model with monthly atmospheric pressure change and massive Continuous Operating Reference Station(CORS)reference stations,a data processing method is developed and a relative mode is constructed between atmospheric pressure changes and crustal deformation.Based on these,the deformation characteristics and the rule of the atmospheric load in the China's Mainland were studied.The analysis of characteristics of APL showed that the variation of air mass has a major impact on the Northwest China,Northeast of East China and the East of North China,where magnitude is about 20 mm.The second is the Northeast China and the Northern part of North China,the order of magnitude is about 13 mm.Correction of APL for vertical time series of GNSS reference stations in different regions indicated that the arid area of Northwest China is mainly affected by APL.But the amplitude became bigger after revision in the regions of Sichuan-Yunnan and Tibetan Plateau.This phenomenon may be due to the fact that the region is subjected to the tectonic movement of the crust and terrestrial water migration loading.The correlation between atmospheric pressure changes and crustal deformation was analyzed,which showed that when the atmospheric mass changes in the same way,a large deformation occurs in Central China,Sichuan-Yunnan and near coastal areas of the North of East China,respectively.

关 键 词：大气负荷形变 球谐函数 基准站时序 地壳形变 

分 类 号：P228.4[天文地球—大地测量学与测量工程]