摘要
本文应用多重分形理论研究了1989年大同6.1级地震前山西地震带(简称山西带,下同)小震活动时间分布结构的变化特征,发现震前各D_q值均有降维异常出现,且D_(+q)(q>0,下同)的异常尤为突出,取不同层次的地震样本进行计算其异常形态基本一致,表明震前小震活动时间分布从无序向有序转变所显示的内在结构异常变化是真实可靠的,这对我们今后地震分析预报的研究或许是有所裨益的.
In this paper, the variational characteristics of the time distribution structure of small earthquakes activity in Shanxi seismic zone before the Datong M6. 1 earthquake in 1989 have been studied by muiti-ply fractal theory, It is found that each Dq value showed dimmension - decrease anomaly before the earthquake, and the anomaly of D+q (q>o) was particularly outstanding. Different earthquake samples are calculated, their anomalous states are basically consistent, which indieates that the inherent structure anomalous variation of time distribution of small earthquakes activity before earthquake is true and reliable. It might be of benifit to our future seismic analysis and prediction studies.
出处
《华北地震科学》
北大核心
1996年第2期42-46,共5页
North China Earthquake Sciences
关键词
山西
多重破裂
统计分析
地震带
Shanxi
seismic activity
multiply fracture
statistical analysis.
