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Energetics of Magnetosphere-Ionosphere system during Main Phase of Intense Geomagnetic Storms over three Solar Cycles

Published online by Cambridge University Press:  27 November 2018

K. J. Suji  and
P. R. Prince
K. J. Suji
Affiliation:
Department of Physics, University College, Thiruvananthapuram 695034, Kerala, India email: kjsuji85@gmail.com, princerprasad@gmail.com
P. R. Prince
Affiliation:
Department of Physics, University College, Thiruvananthapuram 695034, Kerala, India email: kjsuji85@gmail.com, princerprasad@gmail.com
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Abstract

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Solar wind kinetic energy gets transferred into the Earth’s magnetosphere as a result of dynamo action between magnetosphere and solar wind. Energy is then dissipated among various dissipation channels in the MI system. In the present study, energetics of 59 intense geomagnetic storms are analyzed for the period between 1986 and 2015, which covers the three consecutive solar cycles SC 22, 23 and 24. The average solar wind energy impinging the MI system is estimated using Epsilon parameter, the coupling function. Moreover, the relative importance of different energy sinks in the MI system are quantified and is found that more than 60% of solar wind energy is dissipated in the form of ionospheric Joule heating.

Keywords

ring currrent injectionionospheric Joule heatingauroral particle precipitation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S340: Long-term Datasets for the Understanding of Solar and Stellar Magnetic Cycles , February 2018 , pp. 69 - 70
Copyright
Copyright © International Astronomical Union 2018 

References

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