最近几年发现了新的地震前兆:临震之前在地震活动区的地表面记录到电磁辐射脉冲。众所周知,最初的岩石破坏伴随着地壳大范围内的强大脉冲电流。震前不久出现的大地高频电磁场异常,看来是由地震时激发的电场引起电离层次生辐射源所造成。理论也正在证明这一点。 In recent years, a new earthquake precursor was discovered: pulses of electromagnetic radiation were recorded on the surface of the seismic zone before the quake. It is well known that the initial rock failure was accompanied by a strong pulse current over a large area of ​​the earth’s crust. The anomaly of the earth’s high-frequency electromagnetic field, which appeared shortly before the earthquake, appears to be caused by ionospheric secondary radiation caused by the electric field induced by the earthquake. Theory is also proof of this.