南极中山站电离图所显示的高纬现象

THE HIGH LATITUDE PHENOMENA SHOWN BY IONOGRAM OBSERVED AT ZHONGSHAN STATION IN ANTARCTICA

在南极中山站使用ＴＤ－４Ａ测高仪，从１９９０年３月至今已取得了１０万余帧的电离图记录。由于中山站处在极尖区附近这样一个特殊位置，所以这些电离图能显示出大多数高纬现象，诸如极光卵现象、ＦＬＩＺ（Ｆ层不均匀区）现象、倾斜Ｅｓ和空白现象、Ｆ区磁纬中午现象、Ｅ和Ｄ区的粒子沉降效应，以及粒子Ｅ层（夜间Ｅ层）现象等。本文对这些现象进行了描述和初步分析。

The ionograns observed at Antarctic Zhongshan Station in the polar cusp region have shown that there are a number of high latitude phenomena.This paper presents these phenomena.They are auroral oval phenomena,FLIZ phenomena,slant Es phenomena and lacuna,F region magnetic noon phenomena,and particle precipitation effects in the E region.