Solar cycle dependence of the seasonal variation of auroral hemispheric power

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/...

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Veröffentlicht in:Chinese science bulletin 2013-02, Vol.58 (4-5), p.525-530
Hauptverfasser: Zheng, Ling, Fu, SuiYan, Zong, QuiGang, Parks, George, Wang, Chi, Chen, Xi
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container_end_page 530
container_issue 4-5
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container_title Chinese science bulletin
container_volume 58
creator Zheng, Ling
Fu, SuiYan
Zong, QuiGang
Parks, George
Wang, Chi
Chen, Xi
description 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 ~0 to 6. The statistic results can be partly understood in the framework of the ionospheric conduc- tivity feedback model. The similarity and differences between our results and previous results are discussed in the paper.
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subjects Asymmetry
Chemistry/Food Science
correlation
Earth Sciences
Engineering
Hemispheres
Humanities and Social Sciences
Life Sciences
multidisciplinary
Physics
Science
Science (multidisciplinary)
seasonal variation
Seasonal variations
Similarity
Solar cycles
Solar power generation
Statistics
summer
Winter
不对称性
功率比
半球
太阳活动周期
季节变化
极光
模型框架
耦合作用
title Solar cycle dependence of the seasonal variation of auroral hemispheric power
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