Possible ground level enhancements at the beginning of the maximum of Solar Cycle 24. (July 2015)

• Record Type: Journal Article
• Authors: Belov, A; Eroshenko, E; Kryakunova, O; Nikolayevskiy, N; Malimbayev, A; Tsepakina, I; Yanke, V
• Is Part Of: Journal of physics. Number 632(2015)
• Publication Date: 2015-07
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/632/1/012063
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Three solar energetic proton events in the beginning of 2012 (January and March) revealed significant increases of the integral proton fluxes with energies >100 MeV were analyzed by the data from subpolar neutron monitors (>500 MeV). As it was found the event on January 27, 2012 was followed by cosmic ray enhancement of about 2% at several subpolar and high latitude neutron monitors which coincided with the onset of the intensity increase in the GOES channels. This was also confirmed with the GOES/HEPAD data that allow us to consider the event on January 27, 2012 as a Ground Level Enhancement. The events in March 2012 (7.03 and 13.03) occurred under very complicated situation in the interplanetary space and a more detailed analysis is needed. Nevertheless, these events may contain some contribution of solar cosmic rays in the ground level observations.