四川芦山7.0级地震前后电离层TEC扰动分析

ANALYSIS OF IONOSPHERIC TEC DISTURBANCE BEFORE AND AFTER THE LUSHAN Ms7.0 EARTHQUAKE IN SICHUAN

针对2013-04-20四川芦山7.0级地震,利用CODE提供的全球IONEX TEC数据和IRI提供的TEC数据,在排除太阳活动和地磁干扰的情况下,采用四分位法,对IONEX TEC数据和IONEX TEC与IRI TEC的差值数据进行处理,发现地震前后电离层TEC均出现异常扰动现象。全球电离层TEC扰动存在自西向东移动的趋势,同时也发现了扰动存在赤道对称的现象。

The interferences of solar activity and geomagnetic during the period of Lushan Ms7.0 Earthquake were analyzed with IONEX TEC data and the difference between IONEX TEC and IRI TEC. The result shows that the disturbance of ionosphere TEC apperered in the epicenter before and after the Earthquake. The disturbance of global ionosphere TEC trended to move from the west to the east, symmetrical in the equatorial.