论文部分内容阅读
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。
Based on the historical and modern seismic data of Shandong Province and its sea area, this paper analyzes the seismic activity in this area. The results show that: (1) the M_s≥5.0 earthquakes in this area have the characteristics of zonal distribution; (2) since 1300, the seismic activity has two periods, the first period from 1300 to 1687, and the period from 1688 to now Second activity period. Through the analysis of the two active periods, the relative calm phase and active phase in each active phase are significant. It has the characteristics of strong earthquake (6.0-6.9) and strong earthquake (M≥7.0) after every active period. Finally, the spacefill and repeatability of large earthquakes in this area are analyzed.