An investigation on time dependency of K index-based geomagnetic storm conditions observed over different locations of North America
- 15 Downloads
Today, the scientists and researchers from almost every corner of the world are well aware of the adverse effects of geomagnetic storms on our highly expensive electrical and electromagnetic systems such as power grid transmission, satellite communication, RF communication systems, etc. The severe damaging effects of these storms on human health and on other inhabitants of the biosphere are also not unknown. A survey of literature on space science reveals that location or space dependency of these geomagnetic storms has already been established. Now the question may arise—Are geomagnetic storms time-dependent? To answer this question, a laborious exercise has been performed. K-index data obtained from the US Department of Commerce, NOAA, Space Weather Prediction Center, for the year, started from 1994 to 2014 (21 years) over three different locations namely Fredericksburg, College, and Estimated Planetary, are analyzed statistically for the eight different time periods namely 00:00–03:00, 03:00–06:00, 06:00–09:00, 09:00–12:00, 12:00–15:00, 15:00–18:00, 18:00–21:00, 21:00–24:00 hours respectively. Results thus obtained have concluded that apart from space or location dependency the geomagnetic storms are time-dependent also.
KeywordsGeomagnetic storm Inactive Very Quiet Quiet Unsettled Active Minor Storm Major Storm Severe Storm Very Severe Storm Percentage occurrence K-index
I acknowledge the US Department of Commerce, NOAA, Space Weather Prediction Centre for providing the data on their website. The purpose of this work is purely academic and without this data, it was not at all possible for me to represent this useful research work.
- Baker, D.N., et al.: Severe Space Weather Events-Understanding Societal and Economic Impacts. A Workshop Report—Extended Summary. The National Academy Press, Washington, DC (2009). 32 pp., http://www.nap.edu/catalog/12643
- Daglis, I.A.: Space storms and space weather hazards. In: Proceedings of the NATO Advanced Study Institute on Space Storm and Space Weather Hazards, Hersonissos, Crete, Greece. Springer, Berlin (2000), 482 pp. Google Scholar
- Goon, A.M., Gupta, M.K., Dasgupta, B.: Fundamentals of Statistics, vol. 1, 3rd edn. The World Press, Calcutta (1968), 497 pp. Google Scholar
- Iyemori, T., Takeda, M., Nose, M., Odagi, Y., Toh, H.: Mid-latitude Geomagnetic Indices “ASY” and” SYM” for 2009 (Provisional). Data Analysis Center for Geomagnetism and Space Magnetism, Graduate School of Science, Kyoto University, Japan (2010), 10 pp. Google Scholar
- Sugiura, M., Kamei, T.: Equatorial Dst Index 1957–86 (edited by Annick Bethelier and Michel Menvielle). ISGI Publication Office, 4 Avenue De Neptune, F-94100, Saint-Maur-Des-Fosses, France (1999) Google Scholar