GROUND LEVEL ENHANCEMENTS IN RELATION WITH ENERGETIC SOLAR FEATURES AND DISTURBANCES IN SOLAR WIND PLASMA PARAMETERS | Zendy

Pyare lal Verma | Zendy

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GROUND LEVEL ENHANCEMENTS IN RELATION WITH ENERGETIC SOLAR FEATURES AND DISTURBANCES IN SOLAR WIND PLASMA PARAMETERS

Author(s) -

Pyare lal Verma

Publication year - 2015

Publication title -

publications of the korean astronomical society

Language(s) - English

Resource type - Journals

eISSN - 2287-6936

pISSN - 1225-1534

DOI - 10.5303/pkas.2015.30.2.047

Subject(s) - solar wind , physics , coronal mass ejection , intensity (physics) , solar maximum , atmospheric sciences , solar flare , correlation coefficient , ground level , plasma , solar irradiance , astrophysics , optics , nuclear physics , statistics , architectural engineering , ground floor , mathematics , engineering

Ground Level Enhancements (GLEs) in cosmic ray intensity observed during the period of 1997-2012 have been studied with energetic solar features and disturbances in solar wind plasma parameters and it is seen that all the GLEs have been found to be associated with coronal mass ejections, hard X-ray solar flares and solar radio bursts. All the GLEs have also been found to be associated with sudden jumps in solar proton ux of energy of ≥ 60 Mev. A positive correlation with correlation coecient of 0.48 has been found between the maximum percentage intensity (Imax%) of Ground Level Enhancements and the peak value of solar proton ux of energy (≥ 60Mev). All the Ground Level Enhancements have been found to be associated with jumps in solar wind plasma velocity (JSWV) events. A positive correlation with correlation coecient of 0.43 has been found between the maximum percentage intensity (Imax %) of Ground Level Enhancements and the peak value of solar wind plasma velocity of associated (JSWV) events. All the Ground Level Enhancements have been found to be associated with jumps in solar wind plasma pressure (JSWP) events. A positive correlation with correlation coecient of 0.67 has been found between the maximum percentage intensity (Imax %) of Ground Level Enhancements and the peak value of solar wind plasma pressure of associated (JSWP) events and of 0.68 between the maximum percentage intensity (Imax %) of Ground Level Enhancements and the magnitude of the jump in solar wind plasma pressure of associated (JSWP) events.

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