【摘要】 b值是从实际地震资料中统计得到,是震级-频率关系式的比例系数。它和地震年平均发生率v是表征地震活动性的两个重要参数,也是地震危险性概率分析中不可缺少的计算参数。根据地震目录,利用统计的方法给出了南京地区的b值和地震的年平均发生率,并对各种不同的处理方法对b值造成的影响进行了研究。该结果对本地区开展地震安全性评价和地震预报具有重要的参考价值。更多还原

【Abstract】 The value of b from the actual seismic data,which is the ratio coefficient of magnitude-frequency relationship,and average annual rate are two main parameters that indicate seismicity of one zone,and they are the indispensable computational parameters in seismic risk analysis1.Based on current earthquake catalogue,b value and average annual incidence of earthquake in Nanjing seismic zone are obtained with use of mathemat-ical method,and the impact of a variety of different ways of handling on the b value is studied.The study re-sults have important reference value for carrying on seismic safety evaluation and earthquake predication.更多还原