【摘要】 通过分析陕西省丰富的地震活动资料,包括鲜明的地震活动与震害分布的地域性特点以及地震地质环境特点,将陕西省分为三个分区,来进行地震动衰减关系的研究。研究内容主要包括地震烈度衰减关系和基岩地震动衰减关系。选择美国西部作为参考区,三个分区分别作为研究区,采用可逆法进行映射转换计算,得到了三个分区的基岩地震动衰减关系,在转换过程中,还考虑了中国与美国面波震级标度的系统偏差,并对转换结果进行了适用性分析及相关问题的分析与讨论。更多还原

【Abstract】 The Shaanxi areas are divided into three regions according to tectonic backgrounds and seismic damage distribution features.All their magnitude parameters are checked.Based on the statistic relations between epicentral intensity and magnitude as well as relation between sensible radius and magnitude,the near and far field seismic intensity attenuation features are represented and controlled.And then the seismic intensity attenuation relations along major axis,minor axis and mean axis are established separately.The systematic deviations of surface wave magnitude between China seismograph network and U.S.seismograph network are considered in this paper.The results of the research could be used for seismic design decision analysis.更多还原