鲁东—黄海活动地块背景地震活动及未来强震危险性

发布时间：2018-01-24 08:08

本文关键词： 鲁东—黄海活动地块地震复发行为 b值地震危险性　出处：《地震工程学报》2016年S1期 　论文类型：期刊论文

【摘要】：利用历史中强地震和近40年的区域台网地震资料,采用地震复发间隔变异系数和活动性参数b值空间扫描方法,对鲁东—黄海活动地块的背景地震活动进行研究。结果表明:研究区域内中强地震活动的主体区域是南黄海南部坳陷区和陆地苏南隆起区,目前都处于中强地震活动平静期;b值空间分布显示,苏南隆起区南边缘最低,南黄海南部坳陷区次之。结合区域地质构造背景和活动性参数图像,研究区域内现今地震活动主要受NW向、NNE向和近EW向活动断裂控制,中强地震沿该方向断裂分布或丛集在它们与NE向断裂交汇处。
[Abstract]:The use of strong earthquake history and nearly 40 years of regional seismic network, the parameters of the coefficient of variation and earthquake recurrence interval b value spatial scan method, conducts the research to the east of Shandong the Yellow Sea block background seismicity. The results showed that the main area of moderate earthquake activity in the study area is the area of land and South of Jiangsu uplift in the Southern Yellow Hainan depression, are currently in a moderate earthquake quiet period; b value spatial distribution showed that South of Jiangsu uplift of the southern edge of the lowest, the South Yellow Hainan depression area of geological background and activities. Combined with the regional image parameters in the study area, the seismicity is mainly affected by NW, NNE and close to EW active fault control, strong earthquakes along the direction of fault distribution or cluster and NE faults in their intersection.

【作者单位】：江苏省地震局;
【基金】：江苏省地震局青年科学基金项目(201002) 震情跟踪专项工作任务(2014020115)
【分类号】：P315.2
【正文快照】： are now in a relatively quiet period.In this respect,the parameters of a-value,b-value,and a/bwere calculated,and the spatial distribution of these parameters was determined.The parameterswere obtained from the spatial distribution of minimum complete ma

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