【摘要】 在对东南沿海地震带空间分布的边界重新做界定的基础上,对该带二十世纪以来地震活跃幕的分段进行了探讨。主要使用了有序样品聚类分析中的离差平方和法、最优分割法,再结合地震学应变能释放水平进行划分。并以离差平方和法中的误差函数的参数变化为标准对划分的结果进行了判定及F值检验,认为该带划分成四个活跃幕较为合理。更多还原

【Abstract】 Based on defining the boundary of the southeast coastal seismic belt again in spatial distribution, this paper focused on discussing to divide the time section into seismic active episodes since the 20th century in the belt. We use mainly the squariance method among sequence samples cluster analysis and the method of optimum partition, and combine the standard of release level of seismology strain energy to divide it. Meanwhile, according to the changes of parameters of the error function in the squariance method, the dividing result is judged by F value. We think that the belt is divide into 4 active seismic episodes is more reasonable.更多还原