台风期间电离层TEC的扰动响应分析

摘要

针对台风期间的电离层的扰动,利用1996-2004年在福建登陆的台风事件,选择电离层电子总含量(TEC)为对象进行研究,再选择参考点为同纬度不同经度地区的TEC为对照,分析两地TEC差值情况,以及台风期间两者的扰动响应.结果表明:在台风风速达到极值的时段内,部分区域内TEC会出现类似锯齿状的扰动,在之后一段时间内消亡；在风速逐渐趋于极值到极值消失的时段内,风速与TEC日平均值之间存在较强的负相关关系.%The typhoon events landed in Fujian province during 1996-2004 are investigated for ionospheric disturbance analysis.The ionospheric Total Electron Content(TEC) is chosen as evaluation index,and the reference region has same latitude but different longitude compared with research region.The TEC difference between research region and reference region is calculated,then the TEC disturbance response is analyzed hereby.The results show that in some regions the TEC is disturbed like being serrated when the typhoon speed reached maximum,and the disturbance disappears after a period of time.And negative correlation exists between the wind speed of typhoon and daily average TEC when the wind speed reaches maximum value.