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利用2002年2月至2007年12月海南地区DPS-4测高仪观测数据,用统计分析方法研究了磁暴对电离层扩展F的影响.结果认为磁暴从整体上抑制了扩展F现象的发生.但若把扩展F分为不同类型,则结果却有所不同.对于频率型(FSF),在2002年和2003年磁暴对其有促发作用,在2004—2007年有抑制作用;对于区域型(RSF),在2002 2005年磁暴对其有抑制作用,在2006年和2007年,对其有弱促发作用;对于混合型(MSF),在2002年磁暴对其有抑制作用,在2003年和2004年有促发作用,从2005年开始,磁暴对其有抑制作用;对于强区域型(SSF),在2002—2004年磁暴对其有抑制作用,在2005年和2006年有促发作用,2007年有弱抑制作用.
Based on the observed data of DPS-4 altimeter in Hainan from February 2002 to December 2007, the effect of magnetic storms on ionospheric extension F was studied by statistical analysis. The results show that magnetic storms suppress the occurrence of extended F phenomena as a whole. However, the results are different if we divide the extension F into different types, and for the FSF, the magnetic storm played a role in promoting it in 2002 and 2003, and it was inhibited in 2004-2007. For the regional type (RSF). In 2002, it was restrained by magnetic storms. In 2006 and 2007, it was weakly excreted. For the mixed-type (MSF), it was inhibited by the storms in 2002 And 2004 have promulgated effect, from 2005 onwards, the magnetic storm has its inhibitory effect; for strong region type (SSF), in 2002-2004 magnetic storm had its inhibition, in 2005 and 2006 have a role in promoting In 2007 there is a weak inhibitory effect.