1986年2月4日和6日太阳耀斑事件的电离层效应

Effects of Solar Flare Event on Ionosphere on February 4th and 6th,1986

1986年2月太阳上发生了两次大耀斑事件,其规模之大在太阳活动低年确实罕见。这些事件引起了许多地球物理效应。根据我国电离层站垂直探测仪的观测,电离层效应是非常明显的,起测频率(f_(min))增高,甚至探测仪整个频段的回波被吸收掉,地磁暴期间的夜里出现 E 层现象,F_2层发生了大的电离层骚扰,而且导致短波无线电波通信遭受破坏。

In february 1986 two large explosions-flares occured on the Surface of theSun.Such large explosions are really very rare during the year of low Solar activity.many geop- hysical effects occured following these events.Accordingto the ionosound observations in China the ionospheric effects of the flares were very apparent,the lowest frequency (fmin)was increasing.sometimes the blackout phenomenon occured on the ionogram. During magnetic Storm the E layer occured at night,the large ionospheric disturbance occured in the F_2 layer.These Seriously affected the HF communications.