1RELATIONSHIP BETWEEN REGIONAL STRESS FIELD VARIATION AND EARTHQUAKE ACTIVITIES FROM GPS DATAZhang Yongzhi, Cui Duxin, Wang Qi, Zhu Guizhi449-4562CHARACTERISTICS OF THE SEISMIC SOURCE STRESS FIELD IN THE INTERSECTION REGION OF XIANSHUIHE, LONGMENSHAN AND AN′NINGHE FAULTSLong Sisheng, Zhao Zhu457-4643MONITORING THE HORIZONTAL MOVEMENT ALONG THE SHANXI FAULT ZONE BY GPS MEASUREMENTYang Guohua, Zhao Chengkun, Han Yueping, Wang Xiuwen, Guo Yuehong465-4714PRESENT-DAY TECTONIC MOVEMENT IN THE NOR-THEASTERN MARGIN OF THE QINGHAI-XIZANG (TIBETAN) PLATEAU AS REVEALED BY EARTHQUAKE ACTIVITYXu Zhonghuai, Wang Suyun, Gao Ajia472-4815DYNAMIC FEATURES OF THE TIANSHAN OROGEN DEDUCED FROM SATELLITIC GRAVITY DATALou Hai, Wang Chunyong, Wang Fei482-4906THEORETICAL ANALYSIS OF THE SPATIO-TEMPORAL EVOLUTION OF THE BULK-STRAIN FIELD BASED ON A RHEOLOGIC INCLUSION MODELSong Zhiping, Yin Xiangchu, Mei Shirong491-5007VARIATION OF SHEAR-WAVE SPLITTING IN EARTHQUAKE CLUSTERS WITH VERY SIMILAR WAVEFORMSWang Peide, K. Klinge, F. Kruger, T.Plenefisch501-5088FAR-FIELD ANALYSIS OF EFFECTS OF UNILATERAL RUPTURING FAULT ON THE SPACE CORRELA-TION OF STRONG GROUND MOTIONJin Xing, Chen Chao, Zhang Mingyu509-5169SEGMENTATIONS OF ACTIVE NORMAL DIP-SLIP FAULTS AROUND ORDOS BLOCK ACCORDING TO THEIR SURFACE RUPTURES IN HISTORICAL STRONG EARTHQUAKESJiang Wali, Xiao Zhenmin, Xie Xinsheng517-52610EARTHQUAKE RECURRENCE OF THE WHOLE ACTIVE FAULT ZONE AND ITS RELATION TO THOSE ON INDIVIDUAL FAULT-SEGMENTSYi Guixi, Wen Xueze527-53711STATISTICAL SIMULATION ANALYSIS OF THE CORRELA-TION BETWEEN THE ANNUAL ESTIMATED KEY REGIONS WITH A CERTAIN SEISMIC RISK AND THE EARTHQUAKES IN CHINAZheng Zhaobi, Li Gangfeng, Wang Xuequan, Liu Jie, Qian Jiadong538-54612STUDY ON AUTOMATIC RECOGNITION OF THE FIRST MOTION IN A SEISMIC EVENTXie Yongjie547-55213AN INTERFACIAL MECHANICAL MODEL FOR THE ANALYSIS OF EARTHQUAKEShen Xinpu, Zenon Mroz553-558 