2013年5月强太阳耀斑期间横县电离层特征的分析

Ionosphere characteristics during the strong solar flares of Heng County in May 2013

通过对2013年5月4次强太阳耀斑爆发期间横县电离层测高仪的电离图和SAO数据进行分析,结果表明:(1)在5月13-15日4次X级的强耀斑过程中,其中有3次电离图上出现了0.5-2小时的描迹线消失过程。(2)每一次描迹消失的起始时间与太阳耀斑爆发的起始时间存在一定的滞后关系,一般在太阳耀斑爆发5-20分钟之后,电离图描迹线才会开始消失,而当耀斑事件停止时,描迹线恢复也会相应的滞后。(3)横县上空的电离层在当地时间上午时段的吸收现象较晚间时段的明显。

Based on the analysis of ionization figure graphics of ionosphere altimeter and SAO data during the strong solar flare bursting period on May 4 2013 in Hengxian,it is concluded that：（1） there are 3ionization figures appearing 0.5-2 hours of tracing line disappearing process during 4 strong flare processes of X level from the May 13 to 15;（2） there are certain hysteresis between each start time of tracing disappearing and the start time of solar flare bursting,ionization figure tracing line generally begin to disappear after 5 ~20 minutes of solar flare bursting,and when a flare events stops,tracing line recovery will also correspondingly lag;（3） ionospheric absorption phenomenon above Hengxian is more obvious in day than that in the evening.