中国大陆重力场变化及其引起的地球动力学特征

¹ 中国科学院测量与地球物理研究所动力大地测量学重点实验室,武汉市徐东大街340号430077;² 中国地震局第二监测中心,西安市西影路316号,710054 ;³ 中国地震局地震研究所,武汉市洪山侧路40号,430071

基金项目: 国家地震联合基金资助项目(105051);中国科学院知识创新工程资助项目(KZCX3-CW-131)

详细信息

On Gravity Field Variations and Geodynamic Characteristics in Mainland of China

¹ Key Laboratory of Dynamic Geodesy,Institute of Geodesy and Geophysics,Chinese Academy of Sciences,340 Xudong Street,Wuhan 430077,China;² Second Crust Monitoring and Application Center,China Earthquake Administration,316 Xiying Road,Xi'an,710054,China;³ Institute of Seismology,China Earthquake Administration,40 Hongshance Road,Wuhan 430071,China

Funds: 国家地震联合基金资助项目(105051);中国科学院知识创新工程资助项目(KZCX3-CW-131)

摘要: 利用中国地壳运动观测网络1998-2000年间绝对重力和相对重力观测资料获得中国大陆重力场空间动态变化结果,分析研究了1998-2000年中国大陆重力场变化及其特征。
- 绝对重力 /
- 相对重力 /
- 中国大陆 /
- 重力场 /
- 地震
Abstract: Gravity field and some geodynamic characteristics in Mainland of China during 1998-2000 have been analyzed with spatial evolution of gravity field in Mainland of China.The following conclusions are made: ① there is correlation between variation shape of gravity anomalies and spatial distribution of Bouguer gravity anomalies in Mainland of China.② From the strike of contours and its distribution of gravity anomaly variation in Mainland of China,several gradient belts of gravity variation in large scale appeared obviously in the background with total trend of gravity variation anomaly,which are almost consistent with the distribution of tectonic frame of main faults in China. ③ The anomaly area of gravity variation and its gradient belts are closely associated with the distribution of epicenters.④ According to gravity variation in Mainland of China,the area can be divided into three parts: Qinghai-Tibet and its surroundings,southeast foreland and northeast area,which reflected three different stress states.
- absolute gravity /
- relative gravity /
- Mainland of China /
- gravity field /
- earthquake