反向赤道电集流与极盖驱动势

北京大学学报（自然科学版）

反向赤道电集流与极盖驱动势

沈长寿¹, 资民筠²

¹北京大学地球物理系, 北京，100871；²中国艺术研究院，北京，100009

收稿日期:1995-06-20 出版日期:1995-09-20 发布日期:1995-09-20

The Equatorial Counter Electrojet and the Electrostatic Potential Across the Polar Cap

SHEN Changshou¹, ZI Minyun²

¹Department of Geophysics, Peking University, Beijing, 100871; ²The Academy of Arts of China, Beijing, 100009

Received:1995-06-20 Online:1995-09-20 Published:1995-09-20

摘要/Abstract

摘要： 一般认为反向赤道电集流（CEJ）是一种“非”常态现象，其起因可能是潮汐风波模的特殊组合，或赤道上空局地垂直风切或重力波的作用结果。本文表明，在中性大气和水平风经验模式给出的磁静日中低纬平均条件下，CEJ应“正常”地出现。磁层－电离层耦合产生的极盖区边界驱动势（或对流电场）则是CEJ消失的可能机制。

关键词: 赤道电集流, 磁层－电离层耦合, 极盖驱动势

Abstract: Up to now, the equatorial counter electrojet (CEJ) is considered as an unusual phenomenon, which is caused by a special combina-tion of tidal modes, or by a local vertical wind shear or a gravity-wave at ionospheric height above the equator. This paper shows, however, under an average state given by the empirical models of IRI-90, MSIS-90 and HWM-90 for middle-and low-latitude ionospheres on geomagneticallyquiet days, the CEJ occurs frequently. On the other hand, the CEJ disappears under the effect of the electrostatic potentialacross the polar cap (the dawn-dusk electic field) driven by the magnetosphere-ionos-phere coupling.

Key words: equatorial electrojet, magnetosphere-ionosphere coupling, electrostatic potential across the polar cap

中图分类号:

P352

沈长寿, 资民筠. 反向赤道电集流与极盖驱动势[J]. 北京大学学报（自然科学版）.

SHEN Changshou,ZI Minyun. The Equatorial Counter Electrojet and the Electrostatic Potential Across the Polar Cap[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://xbna.pku.edu.cn/CN/

https://xbna.pku.edu.cn/CN/Y1995/V31/I5/609

[1]	张天华,肖佐. Spread-F的经度效应[J]. 北京大学学报（自然科学版）, 2001, 37(3): 348-352.
[2]	谢红,刘滨莎,萧佐 . 中性风在中低纬Spread-F中的作用[J]. 北京大学学报（自然科学版）, 1996, 32(1): 78-88.