【摘要】 以辽宁省及其邻近地区的地震记录为例，在考虑台站空间分形的基础上，通过震源深度校正，确认了震级－频度关系中小震端频度的“掉头”现象是由于台站监测能力不足所致，并对小震端出现的截止震级现象做出了解释。更多还原

【Abstract】 By means of spatial fractals of seismic stations and correction of focal depths with earthquakes occurred in and near Liaoning Province, the authors have proposed that ″fall″ phenomena at the range of small earthquakes in the magnitude frequency relation come from absence monitoring capability of the seismographs, and have explained ″cut off magnitude″ at the range of small earthquakes.更多还原