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On the Characteristics of Geomagnetic Storms Observed During the Past 415 Years

Published online by Cambridge University Press:  27 November 2018

V. G. Haritha ,
P. E. Eapen ,
G. Gopkumar  and
T. E. Girish
V. G. Haritha
Affiliation:
Department of Physics, University College, Trivandrum 695034, India email: vgharithamanoj@gmail.com, kggopkumar@yahoo.com, tegirish5@yahoo.co.in
P. E. Eapen
Affiliation:
Department of Physics, S.G. College, Kottarakkara, Kerala, India email: peeapen@yahoo.co.in
G. Gopkumar
Affiliation:
Department of Physics, University College, Trivandrum 695034, India email: vgharithamanoj@gmail.com, kggopkumar@yahoo.com, tegirish5@yahoo.co.in
T. E. Girish
Affiliation:
Department of Physics, University College, Trivandrum 695034, India email: vgharithamanoj@gmail.com, kggopkumar@yahoo.com, tegirish5@yahoo.co.in
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Abstract

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In this paper we will present our investigations on the characteristics of geomagnetic storms deduced from direct and proxy observations for the years 1601–2016 AD. We show that we could infer epoch of reversal of solar polar magnetic fields from geomagnetic data. Such an inference is done back to the 18th century using geomagnetic and Aurora observations. We could also infer secular changes in the intensity of geomagnetic storms for the past 415 years.

Keywords

Geomagnetic stormspolar magnetic reversalAurora
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. 153 - 154
Copyright
Copyright © International Astronomical Union 2018 

References

Angot, A. 1897, The Aurora Borealis, D. Appeleton Co, New YorkGoogle Scholar
Gopkumar, G. & Girish, T. E. 2010, arXiv:1011.4639 [phy-gen.phy]Google Scholar
Vazquez, M., Vaquero, J. M., Gallego, M. C., Cartes, T. R., & Palle, P. L., 2016, Sol. Phys., 291, 616–642Google Scholar