This work presents a comparative analysis of the time changes in the secondary cosmic ray fluxes recorded by the detector modules of the L.N. Gumilyov ENU scientific complex during the period of powerful geomagnetic disturbances on 04.11.2021 and 13-14.03.2022. Noticeable changes in the geomagnetic indices, solar wind plasma velocity and the potential gradient of the surface electric field were observed. The results of the analysis are presented, the Forbush-decreasing effect is highlighted, and the characteristics and features are considered.
The time intervals in 2021 for which an increase in the particle flux relative to the background one was also observed and registered by the ENU detectors. They are in possible association to electrified clouds, lightning activity, thunderstorms, emission of natural radionuclides, variations of the surface electric field are discussed. The main features of each recorded event are considered. It’s shown that several increase events correlate with the dynamics of the surface electric field potential gradient.
This work supported by the Program-Targeted Funding Program of the Ministry of Education and Science of the Republic of Kazakhstan IRN BR10965191 "Integrated Research in Nuclear and Radiation Physics, High Energy Physics and Cosmology for the Development of Competitive Technologies".