@Article{FigueiredoWrTaOtShBa:2017:LaTrIo,
author = "Figueiredo, Cosme Alexandre Oliveira Barros and Wrasse, Cristiano
Max and Takahashi, Hisao and Otsuka, Y. and Shiokawa, K. and
Barros, D.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Nagoya University} and {Nagoya
University} and {Instituto Nacional de Pesquisas Espaciais
(INPE)}",
title = "Large\‐scale traveling ionospheric disturbances observed by
GPS dTEC maps over North and South America on Saint Patrick’s Day
storm in 2015",
journal = "Journal of Geophysical Research: Space Physics",
year = "2017",
volume = "122",
number = "4",
pages = "4755--4763",
month = "Apr.",
keywords = "ionosphere, LSTID, magnetic storm, waves.",
abstract = "Large-scale traveling ionospheric disturbances (LSTIDs) were
detected in both Northern and Southern Hemispheres over American
sector during the geomagnetic storm on 1718 March 2015, also known
as the Saint Patrick's Day storm. Detrended total electronic
content (dTEC) maps were made using dense GNSS network receiver
data. The retrieved LSTIDs showed wavelengths of 1000 to 2000 km,
phase velocity of ~3001000 m/s, and period of ~3050 min. Among
them, three couples of LSTIDs were observed propagating from the
polar regions to low latitudes. Two wave events observed in
daytime showed the propagation direction of southwest in the
Northern Hemisphere and northeast in the Southern Hemisphere,
which means an asymmetric propagation against the geographic
equator. The other wave event observed during the evening hour
showed symmetric propagation direction, i.e., southwest in the
Northern Hemisphere and northwest in the Southern Hemisphere,
whereas their wavelength and phase velocity are significantly
different between NH and SH. These observations indicate that the
two groups of LSTID have different propagation conditions from
polar to low-latitude regions. The observed asymmetric/symmetric
propagation forms suggest asymmetric/symmetric auroral current
activity between the northern and southern polar regions.",
doi = "10.1002/2016JA023417",
url = "http://dx.doi.org/10.1002/2016JA023417",
issn = "2169-9402",
language = "en",
targetfile = "figueiredo_large.pdf",
urlaccessdate = "27 abr. 2024"
}