首页|期刊导航|中国地震研究（英文版）|Basic Characteristics of Active Structures in Western Sichuan and Its Vicinity and Strong Earthquake Recurrence Model
中国地震研究（英文版）2006，Vol.20Issue(1)：75-89,15.
Basic Characteristics of Active Structures in Western Sichuan and Its Vicinity and Strong Earthquake Recurrence Model
Basic Characteristics of Active Structures in Western Sichuan and Its Vicinity and Strong Earthquake Recurrence Model
摘要
Abstract
Western Sichuan and its vicinity are located in the juncture of three big active blocks, namely,the Chuandian (Sichuan and Yunnan), the Bayan Har and the South China blocks, on the eastern margin of the Qinghai-Xizang(Tibet) Plateau. Many groups of active faults that are capable of generating earthquakes are developed there. Because there exist lateral secondary active faults, the Chuandian block can be further divided into the central Yunnan and northwestern Sichuan sub-blocks; while the Longmenshan sub-block can be divided on the east end of the Bayan Har block. Joint exploration of deep crustal structure shows that there exist low-velocity and high-conductivity layers in the crust of the Chuandian and Bayan Har blocks,which are one of the important factors that make the upper crust prone to earthquake. The results of geological study and modern GPS observation show that blocks of different orders all have SE- or SSE-trending sliding, clockwise rotation and upwelling movement; but there are some differences in amplitude. This paper has also given the geological or GPS slip rates of main active fault zones and discussed the main scientific problems still existing now.关键词
Western Sichuan/Active tectonics/Active block/Strong earthquake recurrence modelKey words
Western Sichuan/Active tectonics/Active block/Strong earthquake recurrence model分类
天文与地球科学引用本文复制引用
Xu Xiwei,Zhang Peizhen,Wen Xueze,Qin Zunli,Chen Guihua,Zhu Ailan..Basic Characteristics of Active Structures in Western Sichuan and Its Vicinity and Strong Earthquake Recurrence Model[J].中国地震研究（英文版）,2006,20(1):75-89,15.基金项目
This project was sponsored by the National Key Basic Research Project(2004CB418401 ) and the State Science and Technological Key Basic Program (2003DIA6N005),China. （2004CB418401 ）
