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.

• 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。