摘要
分析了几个区域的地震间隙图像特征及其与地震大形势的关系.本世纪60年代前全球经历了大震活跃期,地震间隙基本保持平稳均匀分布,之后活动减弱、转平静,间隙高值的出现、显著的增大趋势和图像分散、分段成组性突出为相应的主要特点,全球及大区地震间隙高值有近20 a 的间隔优势.各种级别的地震活动都可作为高一级地震活动的震情"窗口".最后简要分析了今后几年的地震趋势.
Analysed the features of earthquake interval pattern in some regions and their relation to seis- mic trends.Before the 1960s,the whole world had gone through a seismicity period,the earth- quake intervals kept stable and uniform distribution basically,then,weakened and changed to qui- ety.The chief characteristics are higher values,increased situation remarkably,scattered pattern and existence in groups outstandingly.The higher values of intervals for global and larger regions have inermission vantage of near 20 years.A seismicity may be taken as a‘window’of seismic sit- uation of higher grade seismieity.Finally,the seismic trends in the future years are discussed.
出处
《西北地震学报》
CSCD
1998年第4期57-62,共6页
Northwestern Seismological Journal
