Interference of geomagnetic storms in ionospheric plasma bubbles over last solar minimum period
Universidade do Vale do Paraíba
Natural Sciences (Physics)
Studies presented on the relation Sun-Earth system are of great importance currently. Ionospheric irregularities in the F-region, caused by geomagnetic storms have meanings and adverse effects on the Earth. The recent advancement in technology techniques for monitoring space weather has allowed major contributions to this aspect. The main research of this study was to determine whether there was some geomagnetic storm that interfere with the generation, propagation and durability of plasma bubbles that occurred over a period of solar minimum in two cities in the Brazilian sector, São José dos Campos - SP (23.21°S, 45.86°W; dip latitude 17.6°S), designated SJC, low-latitude region and near to south crest ionospheric equatorial anomaly and Palmas - TO, called PAL (10.28°S, 48.33°W; dip latitude 6.7°S), near to the magnetic equator, located in the geographical South, tropical region and the hemisphere opposite to the magnetic equator. This study was conducted with data analysis of five years (2006-2010) of SJC and four years (2007-2010) of PAL, considering the 24th solar cycle, using all-sky imaging photometer operating with interference filters in OI 630.0 nm emission resulting from dissociative recombination process that occurs at an altitude of ~ 250-300 km (F-region).
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