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近期人们认识到,电离层对地震影响非常敏感,探测与地震有关的电离层扰动看来对地震短临预测是非常有前途的。我们提出可利用甚低频/低频(3～30kHz/30～300kHz)无线电探测进行地震—电离层扰动的探测。1995年神户地震明显发现电离层扰动现象之后,开始了利用低电离层甚低频/低频传播信号进行地震短临预测的简短历史。在说明先前的甚低频/低频结果之后,我们给出了最新的甚低频/低频发现:一个是电离层扰动与地震在统计上相关,第二个是2004年12月苏门答腊地震的实例研究,说明了这次地震电离层扰动的空间尺度和动力学原理。
Recently, it has been recognized that the ionosphere is very sensitive to the impact of the earthquake. It is very promising to detect the earthquake-related ionospheric disturbances for short-term earthquake prediction. We propose the detection of seismic-ionospheric disturbances using very low frequency / low frequency (3 ~ 30kHz / 30 ~ 300kHz) radio detection. Shortly after the 1995 discovery of the ionospheric disturbance in the Kobe earthquake, a brief history of short-term and short-term earthquakes prediction using low-frequency / low-frequency propagating signals from low ionosphere began. After describing the previous very low frequency / low frequency results, we present the latest very low frequency / low frequency findings: one is that ionospheric disturbances are statistically related to earthquakes and the second is the case study of the Sumatra earthquake in December 2004, indicating The spatial scale and dynamics of the ionospheric disturbance in this earthquake.