赤道异常的经度效应

比较赤道异常北峰北坡上磁纬靠近但经度不同台站的f₀F₂月中值的差别,比较中国东部电离层垂测站链与日本垂测站链的f₀F₂月中值的差别,可以研究东亚地区赤道异常随经度的变化.结果表明,冬季,赤道异常北峰在日本扇区的强度大于中国东部地区;反之,夏季赤道异常北峰在中国东部地区的强度大于日本扇区,并且两个扇区北峰结束的纬度冬天低于夏天.

LONGITUDINAL VARIATION OF THE EQUATORIAL ANOMALY

The comparison of the monthly median value of the f0F2 for two stations with similar geomagnetic latitude but different longitude has been made. The differences of the monthly median value of- the f0F2 in the ionosphere observation chains in the east of China and in Japan have been found. All of these can be used to investigate the longitudinal variation of the equatorial anomaly in East Asia. The results are these: In winter, the equatorial anomaly in east of China sector is weaker than that in Japan sector; but in summer, the equatorial anomaly in east of China sector is stronger than that in Japan sector; The end latitude of the northern crest for two sectors in summer are larger than that in winter.