Solar cycle dependence of the seasonal variation of auroral hemispheric power

被引：0

作者：

ZHENG Ling ^{[1
]}

FU SuiYan ^{[1
]}

ZONG QuiGang ^{[1
]}

PARKS George ^{[2
]}

WANG Chi ^{[3
]}

CHEN Xi ^{[1
]}

机构：

[1] School of Earth and Space Sciences, Peking University

[2] Space Sciences Laboratory, UC Berkeley

[3] State Key Laboratory of Space Weather, Chinese Academy of Sciences

来源：

Science Bulletin | 2013年 / Z1期

关键词：

auroral power; hemispheric asymmetry; coupling function; solar cycle; precipitation;

D O I：

暂无

中图分类号：

P353 [外层空间日地关系物理];

学科分类号：

070802 ;

摘要：

Although much has been done on the hemispheric asymmetry （or seasonal variations） of auroral hemispheric power （HP）, the dependence of HP hemispheric asymmetry on solar cycle has not yet been studied. We have analyzed data during 1979-2010 and investigated the dependence of HP hemispheric asymmetry/seasonal variation for the whole solar cycle. Here we show that （1） the hemispheric asymmetry of HP is positively correlated to the value of solar F10.7 with some time delay; （2） it is closely related to the coupling function between the solar wind and magnetosphere; and （3） the winter hemisphere receives more auroral power than the summer hemisphere for Kp;to 6. The statistic results can be partly understood in the framework of the ionospheric conductivity feedback model. The similarity and differences between our results and previous results are discussed in the paper.

引用

页码：525 / 530

页数：6

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