【摘要】 对调制比预报地震方法进行了改进 ,并使用改进的地震调制比rm1 0 对华北地区进行空间扫描。结果表明中强地震前 1年左右的中短期阶段 ,未来震中周围的rm1 0 中期异常区出现明显的收缩或消失 ,一些震例在临震前数月还再次出现rm1 0 异常区。本方法具有较好的中短期预报效果。文中还就rm1 0 进行中短期预报的有关问题进行了讨论更多还原

【Abstract】 The earthquake prediction method using seismic modulating ratio is improved and space scan in north China is made by use of improved seismic modulating ration r m10 .The results show that the medium-term anomaly area of r m10 around future epicenter obviously reduced or disappeared in the medium short-term about one year before moderate-strong earthquake;the anomalous areas of r m10 appeared again several months before some earthquakes.Some problems about medium-short term earthquake prediction using r m10 are also discussed in the paper.更多还原