【摘要】 本文根据山东地区及其海域历史和现代的地震资料,对本区地震活动进行了分析。结果表明:(1)本区M_s≥5.0级地震具有成带分布的特征;(2)1300年以来,地震活动分两大期活动,1300—1687年为第一活动期,1688年—现在为第二活动期。通过对两个活动期的分析,每个活动期内的相对平静阶段和活跃阶段是显著的。且具有每活动期先发生中强地震(6.0—6.9),后发生强震(M≥7.0)的特点。最后,分析了本区大震的填空性和重复性。更多还原

【Abstract】 Based on the historical and present seismic data in Shandong and its sea area, an analysis has been made on the earthquake activity in. the region. The results indicate that. (1) Ms≥5.0 events are featuring a belt distribution in the region; ( 2 ) Since 1300 earthquakes are active in two major periods, with 1300-1687 as the first period and 1688 up to now as the second. Through an analysis of the two periods, relatively quiescent and active stages can be seen very obviously in each period, and the scismicity is also characterized as moderate events (M=6.0-6.9) first and strong events (M = 7.0) second in each period.Finally, the filled-gap and recurrence characteristies of large events in the region have been analysed.更多还原