Showing papers by "Inez S. Batista published in 2005"
TL;DR: In this article, satellite observations of enhanced energetic particle fluxes in the South Atlantic Magnetic Anomaly (SAMA) region have been supported by ground-based observations of increased ionization induced by particle precipitation in the ionosphere over this region.
110 citations
TL;DR: In this article, the first time that the planetary scale waves in the MLT region and in the ionosphere are discussed by airglow and ionospheric observations, respectively.
Abstract: [1] Equatorial ionospheric sounding has been carried out at Sao Luis (2.6°S, 44.2°W). The upper mesosphere-lower thermosphere (MLT) airglow OI5577, O2b(0,1) and OH(6,2) emissions and OH rotational temperature have been observed at Cariri airglow observatory (7.4°S, 36.5°W) within a distance of approximately 1000 km to the east of Sao Luis. Both observation sites are located in the equatorial region of South America. Spectral analyses of the ionospheric F-layer bottom height (h′F) and airglow emission intensity reveal that there are quasi 2- and 4-day period oscillations in their temporal variations. This might indicate that planetary scale oscillations, Rossby-gravity waves (or inertial-gravity waves) and Ultra Fast Kelvin waves, are present in the ionosphere. This is the first time that the planetary scale waves in the MLT region and in the ionosphere are discussed by airglow and ionospheric observations, respectively.
41 citations
TL;DR: In this paper, the University of New Brunswick ionospheric modelling technique (UNB-IMT) has been used to describe the local time and geomagnetic latitude dependence of the TEC during the March 31, 2001 magnetic storm with an emphasis on the effects in the Southern Hemisphere.
23 citations
14 Sep 2005
2 citations
14 Sep 2005
1 citations