【摘要】 利用COSMIC掩星观测得到的电离层电子密度,研究了2006年11月15日日本千岛Ms8.0地震和2007年2月25日青海海西Ms5.3地震临震前震区上空附近电子密度的异常变化,通过与K指数(磁暴)对比分析,发现其异常变化与外层空间的干扰无关。研究结果证实,GPS无线电掩星技术可以监测到临震前震中区上空附近的电子密度的异常变化,而异常变化极有可能是由地震引起的。更多还原

【Abstract】 The anomalous changes of the ionospheric electronic density in the space over the regions of Kuril Islands earthquake on Nov. 15,2006 and Haixi(China) earthquake on Feb. 25,2007 had been observed by use of the GPS radio occultation for COSMIC satellite before those events and those anomalies were proved through refering to the indices K from Wuhan geomagnetic station as it was not related to the influences from actions in outer space.Therefore,it can be concluded that the GPS radio occultation technique can be used for monitoring the anomalous change of ionospheric electromic density in the space over the region where an earthquake may occur imminently because these anomalies are probably caused by the generation of earthquakes.更多还原