【摘要】 根据最近38年的区域台网资料,利用空间扫描法对粤闽交界及近海地区进行b值填图,并利用多地震活动性参数值(b、a/b、姨E和n)组合分析方法,讨论了区内滨海断裂带各段落的现今活动特征。研究结果表明:(1)粤闽交界及海域地区b值分布存在明显的空间差异,整个研究区域的平均b值为0.98。(2)滨海断裂带的东山-漳浦段是断裂带上的高应力积累区,为未来最可能发生强震的段落,漳浦-厦门段也具备发生强震的背景;(3)榕江-韩江断裂系在潮州至汕头段出现低b值,分析认为其地震活动水平为6级。更多还原

【Abstract】 Based on seismic data of the regional seismic network for recent 38 years,the paper mapped the b-value in the border and offshore areas of Guangdong and Fujian by the means of spatial scanning,and discussed current activity characteristics for various segments of the Binhai fault zone and Rongjiang-Hanjiang fault system with the method of calculating and analyzing of multiple-seismicity-parameter-value combinations(i.e b,■,n and a / b).The results show that:(1)The spatial distribution of b-value displaces significant spatial heterogeneity in the studied areas,the average b-value is 0.98;(2)The Dongshan-Zhangpu segment of the south Binhai fault zone is in the relatively high stress area,and it may be the potential seismic sources for large earthquakes in the near future;(3)The stress accumulating segment was not arouse in Rongjiang-Hangjiang fault system.更多还原