%0 Journal Article
%4 sid.inpe.br/mtc-m21b/2017/04.19.15.59
%2 sid.inpe.br/mtc-m21b/2017/04.19.15.59.17
%@doi 10.1016/j.jastp.2017.02.009
%@issn 1364-6826
%T Ionospheric F-region observations over American sector during an intense space weather event using multi-instruments
%D 2017
%8 Apr.
%9 journal article
%A Abreu, A. J. de,
%A Martin, I. M.,
%A Fagundes, P. R.,
%A Venkatesh, K.,
%A Batista, Inez Staciarini,
%A Jesus, Rodolfo de,
%A Rockenback, Marlos,
%A Coster, A.,
%A Gende, M.,
%A Alves, M. A.,
%A M., Wild.,
%@affiliation Instituto Tecnológico de Aeronáutica (ITA)
%@affiliation Instituto Tecnológico de Aeronáutica (ITA)
%@affiliation Universidade do Vale do Paraíba (UNIVAP)
%@affiliation Universidade do Vale do Paraíba (UNIVAP)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Massachusetts Institute of Technology (MIT)
%@affiliation Universidad Nacional de La Plata (UNLP)
%@affiliation Instituto Tecnológico de Aeronáutica (ITA)
%@affiliation Rutherford Appleton Laboratory
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress inez.batista@inpe.br
%@electronicmailaddress rodolfo.jesus@inpe.br
%@electronicmailaddress marlosrs@gmail.com
%B Journal of Atmospheric and Solar-Terrestrial Physics
%V 156
%P 1-14
%K Geomagnetic storm, Ionosphere, Ionospheric irregularities, Space weather.
%X The critical interaction between the magnetosphere and ionosphere during intense geomagnetic storms continues to be important to space weather studies. In this investigation, we present and discuss the ionospheric F-region observations in the equatorial, low- and mid-latitude regions in both hemispheres over American sector during the intense geomagnetic storm on 0103 June 2013. The geomagnetic storm reached a minimum Dst of −119 nT at 0900 UT on 01 June. For this investigation, we present vertical total electron content (VTEC) and phase fluctuations (in TECU/min) from a chain of 10 GPS stations and the ionospheric parameters foF2 and h′F from a chain of 4 digital ionosonde stations, covering from equatorial to mid-latitudes regions over American sector during the entire storm-time period 31 May03 June 2013. In addition, the plasma density observed from DMSP satellites is presented. The results obtained show that during the sudden impulse/SSC and throughout the main phase of the storm, a large positive phase was observed in mid-latitudes of the northern hemisphere, which could be due to changes in the thermospheric wind circulation. On the other hand, in the mid-latitudes of the southern hemisphere, no deviations are observed in VTEC and foF2 when compared to the quiet period. During the long recovery phase of the storm on 0102 June, a north-south asymmetry is observed in the F-region. The study confirms the dominant role of the thermospheric winds on north-south asymmetry in the ionospheric F-region. The ionospheric irregularities are found to be confined in the equatorial region, of the bottomside spread-F type, before and during the geomagnetic storm. It shows that the geomagnetic storm did not affect the generation or suppression of ionospheric irregularities at the stations investigated.
%@language en
%3 abreu_ionospheric.pdf