| 中国大陆及周边地区的水平应变场 |
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| 引用本文： | 李延兴,李智,张静华,黄珹,朱文耀,王敏,郭良迁,张中伏,杨春花. 中国大陆及周边地区的水平应变场[J]. 地球物理学报, 2004, 47(2): 222-231 |
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| 作者姓名： | 李延兴 李智 张静华 黄珹 朱文耀 王敏 郭良迁 张中伏 杨春花 |
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| 作者单位： | 中国地震局第一监测中心,天津,300180;中国地震局第一监测中心,天津,300180;装备指挥技术学院,北京,101416;中国科学院上海天文台,上海,200030;中国地震局分析预报中心,北京,100036 |
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| 基金项目： | 国家自然科学基金项目 ( 4 0 1740 2 9)，国家重点基础研究发展规划项目 (G19980 40 7) |
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| 摘 要： | 推导并建立了块体的两种弹性运动方程：块体的整体旋转与均匀应变方程和块体的整体旋转与线性应变方程. 应用统计学原理，使用西域、青藏和华北块体上的GPS站速度数据，对这两种弹性运动方程与刚体运动方程模拟块体站速度的无偏性和有效性进行了统计检验. 检验结果表明，块体的整体旋转与线性应变方程是描述块体运动的最优模型. 将中国大陆划分为10个块体，应用块体的整体旋转与线性应变方程和块体上的GPS站速度估计了各个块体上的旋转与应变参数，按照1°×1°的间距计算了中国大陆及周边地区上1005个点的应变参数，分析了中国大陆及周边地区应变场的基本特征. 用本文方法得到的主压应变方向与地质学方法和测震学方法得到的主压应力轴方向具有很好的一致性(华南块体除外).
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| 关 键 词： | 弹性运动方程 模型检验 应变场分析 中国大陆及周边地区 |
| 文章编号： | 0001-5733(2004)02-0222-10 |
| 收稿时间： | 2003-03-11 |
| 修稿时间： | 2003-09-01 |
Horizontal strain field in the Chinese mainland and its surrounding areas |
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| LI Yan-Xing LI Zhi , ZHANG Jing-Hua HUANG Cheng ZHU Wen-Yao WANG Min GUO Liang-Qian ZHANG Zhong-Fu YANG Chun-Hua First Monitoring Center,China Seismological Bureau,Tianjin ,China Technological College of Equipments and Commands,Beijing ,China Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai ,China Center for Analysis and Prediction,China Seismological Bureau,Beijing ,China. Horizontal strain field in the Chinese mainland and its surrounding areas[J]. Chinese Journal of Geophysics, 2004, 47(2): 222-231 |
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| Authors: | LI Yan-Xing LI Zhi ZHANG Jing-Hua HUANG Cheng ZHU Wen-Yao WANG Min GUO Liang-Qian ZHANG Zhong-Fu YANG Chun-Hua First Monitoring Center China Seismological Bureau Tianjin China Technological College of Equipments Commands Beijing China Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai China Center for Analysis Prediction China Seismological Bureau Beijing China |
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| Affiliation: | 1.First Monitoring Center, China Seismological Bureau, Tianjin 300180, China 2 Technological College of Equipments and Commands, Beijing 101416, China 3 Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China 4 Center for Analysis and Prediction, China Seismological Bureau, Beijing 100036, China |
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| Abstract: | AbstractIn this paper, two kinds of equations of block elastic motion are established. One is the equation of rotation in the entire block and homogeneous strain, and the other is the equation of rotation in the entire block and linear strain. Using the velocities of GPS sites located in the Western Region, Qinghai Xizang and North China blocks, these two kinds of elastic motion equations and the rigid motion equation are tested statistically for their unbiasedness and validity to simulate the site velocities of the blocks. The results indicate that the equation with rotation in the entire block and linear strain is the optimal model to describe the block motion. Dividing the Chinese mainland into 10 blocks, the rotation and strain parameters of each block are estimated |
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| Keywords: | Equation of elastic motion Model testing Strain field analysis Chinese mainland and its surrounding areas. |
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