中国低纬(海南)电离层漂移特性

为了研究中国低纬地区的电离层动力学特征,对2002年3月～2004年3月期间海南地区的电离层等离子体漂移观测资料进行了分析研究.结果表明:磁宁静时海南地区的电离层漂移日间垂直方向变化较为规则,季节变化不大,漂移速度通常向上,大小为0～20m/s,随季节变化;晚间垂直方向漂移变化较为复杂,漂移速度以向下为主,随月份和季节变化较大;水平方向漂移速度通常在50～100m/s左右,在日出日落时可达150～200m/s,甚至高达300m/s,且在南北方向和东西方向的漂移速度表现不同.这些特征与经度相差几乎180°的赤道区Jicamarca台站观测到的漂移特征对比,显示了较大的区域差别.

Low latitude ionospheric plasma drift features in China

Ionospheric plasma drift data in Hainan during the period of from Mar 2002 to Mar 2004 are analyzed to investigate the low-latitude ionospheric electrodynamics. Results show that variation of daytime vertical drift is regular and independent on season, generally the vertical plasma drift is about 0~20m/s and dependent on season, nighttime vertical plasma drift is usually downward and its variation is very complicated, which varies with season; Horizontal plasma drift is about 50~100m/s and at sunset and sunrise increasing up to about 150~200m/s, even as high as 300m/s, and the meridian and zonal plasma drifts are different. Compared with plasma drift observation in Jicamarca ionospheric observatory, ionospheric drift in Hainan shows distinct territorial features.