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近些年来利用卫星技术观测地震前的电磁扰动已得到地震学界的广泛关注,并被认为是研究地震电磁前兆的有效途径之一(Larkinaet al,1989;Parrot,1994;Serebryakovaet al,1992;Molchanovet al,1993;Nemecet al,2008).这些电磁扰动的频率范围从直流一直到高频均有覆盖,其电磁扰动出
In recent years, the use of satellite technology to observe electromagnetic disturbances before earthquakes has drawn the attention of seismologists and is considered as one of the effective ways to study the electromagnetic precursors of earthquakes (Larkina et al, 1989; Parrot, 1994; Serebryakova et al, 1992; Molchanovet al , 1993; Nemecet al, 2008). The frequency range of these electromagnetic disturbances is covered from DC to high frequencies, with electromagnetic disturbances