@InProceedings{FigueiredoTaWrOtShSi:2018:DiKiNi,
author = "Figueiredo, Cosme Alexandre Oliveira Barros and Takahashi, Carlos
and Wrasse, Cristiano Max and Otsuka, Yuichi and Shikawa, Kazuo
and Silva, Diego Barros",
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 = "Different kind of nighttime traveling ionospheric disturbances
observed by airglow images over southsoutheast of brazi",
year = "2018",
organization = "Cospar Scientific Assembly, 42.",
abstract = "Different type of MSTIDs has been observed at Cachoeira Paulista
(22.4°S; 45.0°W), Brazil, from June 2013 to December 2015 using
airglow OI 630.0 nm images. During the period, 58 MSTIDs were
identified and classified as: MSTIDs dark band (around 10 events),
and periodic MSTIDs (48 events). Dark band MSTIDs present phase
velocity between 50 and 200 m/s and propagation direction to
northwestward. On the other hand, periodic MSTIDs have a
horizontal wavelength of 80 to 160 km, a period ranging between 5
and 45 minutes, the phase velocity of 50 to 200 m/s, and
propagation directions are mainly north-northeastward. The waves
parameters indicate that the periodic MSTIDs have different
characteristics compared to the dark band MSTIDs, suggesting that
the periodic MSTIDs are not generated through the well-known
Perkins instability. In addition to it, the present study
indicates that the spectral characteristics found in Brazil are
different from other regions such as Japan and Indonesia.
Therefore, we intend to investigate the generation mechanisms of
the periodic MSTIDs. Furthermore, the anisotropy observed in the
periodic MSTID propagation direction can be explained by the wind
filtering mechanism.",
conference-location = "Pasadena, California",
conference-year = "14-22 July",
language = "en",
urlaccessdate = "19 abr. 2024"
}