Variations of TEC, NmF2 and electron density during ionospheric storm on June 1, 2013
Abstract
The ionospheric storms are one of manifestations of space weather events. Each storm provides valuable information for the ionospheric study and modeling. Geomagnetic disturbance occurred on June 1, 2013 caused the appreciable ionosphere response. The main phase onset of the storm took place on June 1, 2013 after 02.00 UT, when the Dst index changed from 21 nT to negative values. The Dst index reached the minimum value of -119 nT on June 1 at 08.00 UT, after that the phase of recovery began. The main phase duration of geomagnetic disturbance was about 6 h, the recovery phase - about 36 h. For analysis of the global ionospheric response to this storm, there were processed observations derived from different ground-based and space-born facilities. Analysis of the global TEC maps (GIMs) reveals the strong positive effect in TEC at the day-side part of the Earth just after sudden storm commencement time. Then it was registered the development of negative ionospheric storm over the Northern Hemisphere. At the same time over the Southern Hemisphere the positive effects were prevailed. For detailed study of the main ionospheric parameters’ variation we select multisite set of ionosondes stations at different longitudinal sectors and co-located GPS receivers. We analyzed the diurnal variation of the ionospheric peak parameters and GPS TEC. For areas, that are not covered by ground-based measuring facilities, there were involved observations provided by JASON-1, JASON-2 and FORMOSAT-3/COSMIC LEO satellite missions.
- Publication:
-
40th COSPAR Scientific Assembly
- Pub Date:
- 2014
- Bibcode:
- 2014cosp...40E3755Z