Energetic Dynamics of the Inner Magnetosphere in Contact with Fast Solar Wind Currents: Case of the Period 1964-2009
Energetic Dynamics of the Inner Magnetosphere in Contact with Fast Solar Wind Currents: Case of the Period 1964-2009作者机构：É cole Normale Supérieure Koudougou Burkina Faso Laboratoire de Recherche en Energétique et Météorologie de l’Espace (LAREME) Université Norbert ZONGO Koudougou Burkina Faso Laboratoire de Chimie @nalytique de Physique Spatiale et Energétique (LAC@PSE) Université Norbert ZONGO Kou-dougou Burkina Faso Université Norbert ZONGO Koudougou Burkina Faso Université Virtuelle du Burkina Faso Karpala Ouagadougou Burkina Faso
出 版 物：《International Journal of Geosciences》 (地球科学国际期刊（英文）)
年 卷 期：2022年第13卷第5期
页 面：329-348页
学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学]
主 题：Magnetosphere Magnetospheric Electric Field Magnetic Field Solar Wind Solar Cycles
摘 要：The Earth’s magnetosphere is a magnetic shield that protects Earth from high-energy particles and is subject to a series of internal processes caused by jets of the solar wind (SW) that destabilize it. These disturbances affect health as well as technology and become more extreme when SW is more accelerated. Thus, to better understand the impact of high-speed solar wind (HSSW) invasion on the dynamics of the magnetospheric system, a statistical study of HSSW populations was conducted for even (20 and 22) and odd (21 and 23) solar cycles. The regression analysis using the solar-derived fields from all solar cycles, indicates three states of the inner magnetosphere: 1) the 00:00UT-15:00UT period marked by a magnetic reconnection on the day side of the Earth closest to the Sun with the interplanetary magnetic field (IMF) facing South;2) the 15:00UT-21:00UT period where IMF changes from South to North and remains there until 21:00UT;and 3) the 21:00UT-24:00UT period where there is a reconnection on the night side with stretched field lines. Observations made at different phases of solar activity lead us to suggest that the magnetospheric electric field (EM) and the Bz component of IMF (IMF-Bz) are strongly correlated not only at a particular time scale, but at different time scales. We believe that the daily fluctuations of the electrical and magnetic effects of magnetospheric origin currents play a very important role in the dayside magnetic reconnection rate. Moreover, examination of the cycles with different parities shows important amplitudes of the solar causes for the even cycles compared to the odd solar cycles. Therefore, even solar cycles have a strong influence on our socio-economic system compared to odd cycles.
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