@InProceedings{FagundesBaKaFePiDeMu:2017:PaSt,
author = "Fagundes, Paulo Roberto and Barbosa, Fl{\'a}vio Roony Evangelista
and Kavutarapu, Venkatesh and Fejer, Bela G. and Pillat, Valdir
Gil and Denardin, Clezio Marcos and Muella, M{\'a}rcio",
affiliation = "{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and {Instituto
Federal de Tocantins (IFTO)} and {Universidade do Vale do
Para{\'{\i}}ba (UNIVAP)} and {Utah State University} and
{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidade do Vale
do Para{\'{\i}}ba (UNIVAP)}",
title = "How and in which way space weather changed the ionospheric
irregularities occurrence during the St. Patrick´s storm",
booktitle = "Proceedings...",
year = "2017",
organization = "AGU Fall Meeting",
abstract = "During the solar cycle 24 there was a very intense geomagnetic
storm, called St. Patrick´s Day storm and the effects of this
storm on ionosphere has become a topic of extensive space weather
investigation. The Dst during this storm reached -223 nT on March
17, 2015 at 23:00 UT. Special efforts have been devoted so far to
investigate many aspects of the St. Patrick´s Day ionospheric
storm such as the prompt penetration electric fields (PPEFs),
GPS-TEC changes, electron density disturbances, plasma drift, O+
concentration modification, hemispherical asymmetry developments,
equatorial ionization anomaly (EIA) modification, and ionospheric
irregularities. Besides all these important studies, there are
some essential aspects, which have not been addressed yet, related
to the occurrence of ionospheric irregularities with different
scale sizes. In this paper, we present and discuss the generation
and suppression of ionospheric irregularities during March 2015,
using the observations conducted in the Latin American Sector from
4 ionosondes (ESF) and 20 GPS-TEC stations (ROT phase
fluctuation), which includes the St. Patrick´s Day geomagnetic
storm period. Suppression of large-small scales ionospheric
irregularities has occurred during the main and second night of
the recovery phases. However, during the first night of recovery
phase there was post-midnight ionospheric irregularities.",
conference-location = "New Orleans",
conference-year = "11-15 Dec.",
language = "en",
targetfile = "fagundes_how.pdf",
urlaccessdate = "24 abr. 2024"
}