Geoeffectiveness of the ‘Battle of Grunwald day’ in 2012
- 1Siedlce University, Institute of Mathematics and Physics, Department of Physics, Siedlce, Poland (gila@uph.edu.pl)
- 2Space Research Centre of Polish Academy of Sciences, Warsaw, Poland (agil@cbk.waw.pl)
- 3AGH University of Science and Technology in Krakow, Department of Electrical and Power Engineering, Krakow, Poland
- 4Siedlce University, Faculty of Exact and Natural Sciences, Institute of Computer Science, Siedlce, Poland
During the solar activity cycle 24, which started at the end of 2008, Sun was behaving silently and there were not many spectacular geoeffective events. Here we analyze the geomagnetic storm which happened on July 15 of 2012 in the 602 anniversary of the famous Polish Battle of Grunwald. According to the NOAA scale, it was G3 geomagnetic storm with Bz heliospheric magnetic field component dropping up to -20 nT, Dst index below -130 nT, AE index greater than 1300 nT and ap index being above 130 nT. It was proceeded by the solar flare of X1.4 class on 12 of July. This geomagnetic storm was accompanied by the fast halo coronal mass ejection 16:48:05 on 12 of July-the first C2 appearance, with the apparent speed 885 km/s and space speed 1405 km/s. This geomagnetic storm was classified as the fourth of the strongest geomagnetic storms from SC 24. Around that time in Polish electric transmission lines infrastructure, there was observed a significant growth of the number of failures that might be of solar origin.
Acknowledgments: the Polish National Science Centre, grant number 2016/22/E/HS5/00406.
How to cite: Gil, A., Modzelewska, R., Moskwa, S., Siluszyk, A., Siluszyk, M., and Wawrzynczak, A.: Geoeffectiveness of the ‘Battle of Grunwald day’ in 2012, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-8326, https://doi.org/10.5194/egusphere-egu2020-8326, 2020
