@InProceedings{KavutarapuFaTuTaBaRe:2018:FoEfSi,
author = "Kavutarapu, Venkatesh and Fagundes, Paulo Roberto and Tulasiram,
S. and Tardelli, Alexandre and Batista, Inez Staciarini and
Reinisch, Bodo",
affiliation = "{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and
{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and {Indian
Institute of Geomagnetism} and {Universidade do Vale do
Para{\'{\i}}ba (UNIVAP)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {University of Massachusetts Lowell}",
title = "Fountain effect signatures on the f3-layer characteristics from
the equator to the eia crests during the geomagnetic storm of 17
march 2015",
year = "2018",
organization = "Cospar Scientific Assembly, 42.",
abstract = "The existence of an additional stratification of the equatorial
ionospheric F region, the F3-layer, has been known since the1940s,
and it has been explored in detailed for more than a decade.
Adding to the large quiet time variability in the F region
ionosphere, ionosondes have observed F3-layers during the
occurrence of geomagnetic storm induced prompt penetration
electric fields (PPEF). The St. Patricks Day geomagnetic storm on
17 March 2015 is the strongest storm in the 24th solar cycle with
the minimum Dst of -223 nT. During the main phase of this storm,
two strong prompt penetration electric field phases took place:
the first with the southward turning of IMF Bz around 1200 UT, and
the second with the onset of a sub storm around 1725 UT leading to
strong equatorial zonal electric field enhancements in the
Brazilian sector, which was on the day side hemisphere. The
F3-layer was observed over a large latitudinal extent of 45
degrees during the two strong PPEF phases that occurred in the
main phase of the storm. The F3 is seen from the equator up to the
equatorial ionization anomaly (EIA) crests in the northern and
southern hemispheres along the Brazilian longitudes. Distinct
latitudinal and hemispheric differences are noted in the
occurrence characteristics of the F3- layer during both PPEF
phases. The influence of the storm-induced super fountain effect
on the evolution of the F3-layer over the equatorial and low
latitudes is discussed.",
conference-location = "Pasadena, California",
conference-year = "14-22 July",
language = "en",
urlaccessdate = "29 mar. 2024"
}