Bibliography



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Found 3 entries in the Bibliography.


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2022

Ionospheric response to the 26 August 2018 geomagnetic storm along 280° E and 316° E in the South American sector

This paper studies the response of the ionospheric parameters critical frequency (foF2), their height (hmF2), and Total Electron Content (TEC) at mid, low, and near-equatorial latitudes of the South American sector during the intense geomagnetic storm of 26 August 2018. The ionospheric response at the beginning of the main phase was different depending on latitude (in general, there were decreases in foF2 at near-equatorial and low latitudes and small increases at mid-latitudes). During the recovery, positive storm effects in foF2 and TEC were observed almost all day on 26 August 2018 overall the stations along all the latitudes and also on 27 August. The initial effects were possibly caused by a weak prompt penetration electric field while the enhanced ratio of thermosphere neutral composition i.e. [O]/[N2] was considered as the main cause for the positive storm effects during the recovery phase.

Mansilla, Gustavo; Zossi, Marta;

Published by: Advances in Space Research      Published on: jan

YEAR: 2022     DOI: 10.1016/j.asr.2021.08.002

geomagnetic storm; Ionosphere; South America

2020

Longitudinal variation of the ionospheric response to the 26 August 2018 geomagnetic storm at equatorial/low latitudes

Mansilla, Gustavo; Zossi, Marta;

Published by: Pure and Applied Geophysics      Published on:

YEAR: 2020     DOI:

Effects on the equatorial and low latitude thermosphere and ionosphere during the 19--22 December 2015 geomagnetic storm period

In this paper, the critical frequency of F2 layer (foF2) and their peak height (hmF2) recorded at equatorial and low latitude stations of the South American sector were analyzed during the 19\textendash22 December 2015 geomagnetic storm period. We have observed initially decreases of foF2 at equatorial and low latitudes over the North crest of the equatorial ionization anomaly (EIA) and almost no effect over the South crest. These initial negative storm effects can be fully explained by the penetration of a westward electric field to low and equatorial latitudes. The positive storm effects that replaced the negative storm effects during the development of the main phase may have occurred possibly because of an intensification of the \textquotedblleftfountain effect\textquotedblright due to an increase of the upward vertical drift at equatorial latitudes. Changes in the O/N2 ratio (increases or decreases) may be the most probable cause for the positive and negative storm effects observed during the recovery.

Mansilla, G.A.; Zossi, M.M.;

Published by: Advances in Space Research      Published on:

YEAR: 2020     DOI: 10.1016/j.asr.2019.09.025



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