THE HETEROGENEOUS CHARACTERISTICS OF CRUST MANTLE STRUCTURES AND THE SEISMIC ACTIVI TIES IN THE NORTHWEST BEIJING REGIONZhao Jinren, Zhang Xiankang, Zhang Chengke, Zhang Jianshi, Liu Baofeng, Ren Qingfang, Pan Suzhen, Hai Yan119-127
NUMERICAL ANALYSIS OF CONTEMPORARY HORIZONTAL TECTONIC DEFORMATION FIELDS IN CHINA FROM GPS DATAYang Shaomin, Wang Qi, You Xinzhao128-138
STUDY ON DISPLACEMENT FIELD GENERATED BY AFTERSHOCKS IN LANDERS SEISMIC FAULT PLANE AND ITS ADJACENT AREASWan Yongge, Shen Zhengkang, Lan Congxin139-146
A RAPID AND ACCURATE TWO-POINT RAY TRACING METHOD IN HORIZONTALLY LAYERED VELOCITY MODELTian Yue, Chen Xiaofei147-154
DISTRIBUTION OF Lg CODA Q VALUE IN XINJIANG AND ITS ADJACENT REGIONSXu Yan, Mao Yan, Hu Jiafu, Su Youjin, Cong Lianli155-162
NUMERICAL SIMULATION FOR 1975 HAICHENG AND 1999 XIUYAN EARTHQUAKE PROCESSES BY DDA+FEMZhang Ruiqing, Wei Fusheng, Qiao Chengbin, Lin Banghui163-170
CHARACTERISTICS OF FORESHOCK AND ITS IDENTIFICATIONWang Linying, Chen Peiyan, Wu Zhongliang, Bai Tongxia171-177
CONSISTENT CMT SOLUTIONS FROM HARVARD UNIVERSITY BEFORE THE GREAT EARTHQUAKES IN KURILE ISLANDS AND ITS SIGNIFICANCE FOR EARTHQUAKE PREDICTIONWang Junguo, Diao Guiling178-183
RESEARCH ON ANISOTROPIC PARAMETERS BY SYNTHETIC SEISMOGRAMFan Xiaoping, Li Qinghe, Yang Congjie184-193
NONLINEAR FREE THERMAL CONVECTION IN A SPHERICAL SHELL: A VARIABLE VISCOSITY MODELZhu Tao, Feng Rui194-204