在空间上，压磁、感磁等机制引起的震磁效应主要分布在震中附近的有限区域内，震级越大，展布范围也越大。
Spatially , seismomagnetic effect caused by piezomagnetism and induced magnetism. is mainly distributed in the limited areas near epicenters , the bigger of the magnitude , the wider of the range.
地震震级频度的古登堡·里克特关系式(简称g - R关系式)一直是许多地震学问题研究的重要前提之一，然而实际分布常常与这一关系式有一定的偏离。
The G-R relation between the earthquake magnitude and frequency has been an important premise in seismological study, but its actual distribution often deviates from its theoretic result.
用震级上限的单边正态分布模型代替固定的震级上限模型，分析了这种改进对地震危险性分析结果的影响及其工程意义。
We use unilateral normal distribution of upper magnitude limit instead of fixed one and analyze the results of seismic hazard analysis of this change and engineer meaning of it.
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