断层形变的应变强度比动态图像与震例综合研究

摘要

探索由跨断层水准和基线资料提取应变强度比(趋势因子SRT及压性因子SRC)，并借助最小二乘配置获得其时空域连续变化的动态图像的方法。利用中国西部甘宁青及川滇地区80年代后期至2000年7月的最新跨断层形变资料，运用该方法获得了研究区的应变强度比动态演化特征, 结合姚安（Ms6.5）、景泰(Ms5.9)等震例进行综合研究，给出了中短期强震危险区动态图像预报的判定依据。%A new method for extracting strain strength ratio(trend factor SRT and compression factor SRC)from leveling and base line data across fault and obtaining dynamic patterns which change continuously in time-space domain with the aid of the least square collocation is studied.With this method,the dynamic evolution characteristics of strain strength ratio are obtained using the recent deformation data across the faults in the areas of Gansu-Ningxia-Qinghai, Sichuan and Yunnan in the West of China from the late eighties to July of 2000.In combination with some seismic examples such as Yao'an earthquare(Ms6.5) and Jingtai earthquake(Ms5.9),the criterion of prediction with the dynamic patterns in middle and short term strong earthquake danger area is given.