欢迎访问《地震》，
地震

地震 ›› 2000, Vol. 20 ›› Issue (z1): 28-33.

• • 上一篇    下一篇

中国大陆水平运动特征与动力学分析

李延兴1, 黄城2, 朱文耀2, 王琪3, 孙中朋4   

  1. 1.中国地震局第一地形变监测中心 ,天津 300180;
    2.中国科学院上海天文台 ,上海200030;
    3.中国地震局地震研究所 ,湖北 武汉430071;
    4.中国科学院长春人卫站, 吉林 长春130117
  • 收稿日期:2000-05-08 修回日期:2000-05-23 出版日期:2000-09-30 发布日期:2022-09-23
  • 作者简介:李延兴 (1942-) ,男 ,河南尉氏人 ,研究员 ,主要从事大地测量学、空间大地测量学及地形变与地震关系研究
  • 基金资助:
    国家重点基础研究发展规划项目 (G19984070)

Characteristics of horizontal movement in China's continent and geodynamic analysis

LI Yan-xing1, HUANG Cheng2, ZHU Wen-yao2, WANG Qi3, SUN Zhong-peng4   

  1. 1. First Crustal Deformation Monitoring Center, CSB, Tianjin 300180 China;
    2. Shanghai Astronomical Observatory, CAS, Shanghai 200030, China;
    3. Institute of Seismology, CSB, Wuhan 430071, China;
    4. Changchun Astronomical Observatory, CAS, Changchun 130117, China
  • Received:2000-05-08 Revised:2000-05-23 Online:2000-09-30 Published:2022-09-23

PDF (PC)

摘要： 提出了将不同 G PS网融合为一体的方法, 实现了中国大陆 4个高精度 GP S网的融合 ,并据此获得了中国大陆及周边地区水平运动的速度场 ,以及北向与东向分量场的等值线图。 在全球框架下, 中国大陆及周边地区存在明显的向东运动趋势; 中国大陆西部与东部 SN 向运动的方向相反; 西藏高原东部是中国大陆地壳运动最强烈的地区; 中国大陆水平运动方向为同出于一源的一束放射状弧线。 根据中国大陆地壳水平运动的特征 ,分析了中国大陆周围的动力学环境 ,并对各板、地块对中国大陆作用力的大小进行了概略估计。表明印度板块对中国大陆碰撞力最大 ,其次是菲律宾海板块对中国大陆的俯冲力。

关键词: G PS网融合, 中国大陆速度场, 动力学环境

Abstract: In this paper, amethod to synthesize different GPS networks has been proposed, and by usi ng this method, synthesis of 4 high-preci sion GPS networks in China's continent have been realized. The velocity fi eld of horizontal movement and the contour map of N and E-t rending component fields in China's continent and the surrounding areas have obtained. Under the global frame, China's continent and the surrounding areas have an obvious eastward mov ement. The directions of N S-trending movements are oppo site in the western and eastern part of China's continent. The eastern part of Xizang plateau is the area with the most intensive crustal movement in China's co ntinent. The direction of horizontal movement in China's continent likes a beam of radial arc lines with the same o rig in. Based on the characteristics of horizontal crustal movement in China's continent, the geodynamic environment around China's continent has been analyzed, and a rough estimation has been made for the magnitude of acting forces from each plate and block to China's co ntinent. According to the estimation, the impact force from India plate to China's continent is the maximum, and then is the underthrusting force from Philippi ne Sea plate to China's continent.

Key words: Synthesis of GPS networks, Velocity field of China's continent;, Geodynamic environment

中图分类号: