【摘要】 利用位于赤道异常区的广州（23.17°N,113.34°E）和茂名（21.45°N,111.31°E）两台站2011年7月至2012年6月观测到的GPS电离层闪烁数据,分析比较了这两地电离层闪烁出现的逐月变化及地方时变化和空间分布特征.结果表明,中等强度闪烁（S₄>0.4）和强闪烁（S₄>0.6）的出现均呈现明显季节分布规律,两站的闪烁活动均表现出春秋强,冬夏弱的特点,在时间上主要发生在20:00 LT—24:00 LT;从空间分布来看,两站的闪烁活动在2011年秋季,闪烁出现的区域比较分散,而在2012年春季,主要在两站上空区域出现的闪烁最为频繁.更多还原

【Abstract】 Data recorded by GPS ionospheric scintillation monitors in Guangzhou（23.17°N,113.34°E） and Maoming（21.45°N,111.31°E） stations,which are situated near the northern crest of the equatorial ionosphere anormaly,has been used to study the day-to-day,month-to-month,local time and spatial variation characteristics of ionospheric amplitude scintillation during the period from July 2011 to June 2012.The results show that different intensity of amplitude scintillations has common temporal variation characteristics.The scintillation activities with S₄ > 0.4 and S₄ > 0.6mostly occur from 20:00LT to 24:00 LT in spring and autumn.Spatially,scintillations distribute throughout the large region with the latitude from 18° to 27° and the longitude from 109° to 118°for Guangzhou and the latitude from 17° to 26° and the longitude from 107° to 116° for Maoming in the fall of 2011.However,scintillations mainly appear in a small area overhead in the spring of2012 of both stations.更多还原