高精度超导重力观测与研究为国家精密测绘和全球地球动力学提供理论基础  

High-precision Superconducting Gravimetric Observations and Investigations Provide National Surveying and Mapping and Earth’s Dynamics with Theoretical Fundamentals

作　　者：孙和平 周江存 徐建桥 陈晓东 雷湘鄂 崔小明 牛晓伟 SUN Heping;ZHOU Jiangcun;XU Jianqiao;CHEN Xiaodong;LEI Xiang’e;CUI Xiaoming;NIU Xiaowei(State Key Laboratory of Geodesy and Earth’s Dynamics,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430077,China;University of Chinese Academy of Sciences,Beijing 100049,China;Wuhan National Geodetic Observatory,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430077,China)

机构地区：[1]中国科学院精密测量科学与技术创新研究院大地测量与地球动力学国家重点实验室,武汉430077 [2]中国科学院大学,北京100049 [3]中国科学院精密测量科学与技术创新研究院武汉大地测量国家野外科学观测研究站,武汉430077

出　　处：《中国科学院院刊》2021年第2期216-223,共8页Bulletin of Chinese Academy of Sciences

基　　金：国家自然科学基金重点项目(40730316);国家自然科学基金创新研究群体项目(41021003、41321063、41621091);中国科学院知识创新工程重要方向性项目(KZCX2-YW-133);中国科学院战略性先导科技专项(B类)(XDB41000000);国家重点基础研究发展计划(2014CB845902)。

摘　　要：1985年以来,武汉大地测量国家野外科学观测研究站积累了近35年的高精度重力观测数据;通过广泛的国际合作,建立了亚洲地区唯一的国际重力固体潮基准,建立了台站低频背景噪声模型;构建了全球重力固体潮实验模型和中国大陆精密潮汐改正模型,改善了地表质量负荷重力效应的理论模拟;探测了液态地球的近周日共振、地球自由振荡和地球内核平动振荡等与地球动力学相关的信号,并应用于研究地球深内部物性参数;提出了耦合温度场的球形分层地球的形变理论等。相关研究成果可为国家精密测绘、全球大尺度地球动力学和空间技术提供新的理论指导和背景材料。Since 1985, about 35-year high-precision gravity data have been being well accumulated and worldwide cooperation was effectively carried out. The unique international tidal gravity reference in Asia was established. The background noise model for low frequency in Chinese continent was constructed. A global experimental model and an accurate correction model in Chinese continent for gravity tides of the Earth were both constructed. The theoretical simulation of the effect of surface mass loading on gravity was improved. The signals related to the nearly diurnal resonance, Earth’s free oscillation and translational wobble of the Earth’s inner core were detected to investigate the physical parameters of the Earth’s deep interior. A theory which couples temperature into elastic deformation of a layered and self-gravitating spherical Earth was proposed. The above mentioned achievements would contribute to national precise surveying and mapping, global large-scale geodynamics and space techniques as roles of new instructions and/or references.

关 键 词：固体潮 超导重力仪 地球动力学 物质迁移 变形理论 

分 类 号：P223[天文地球—大地测量学与测量工程]