@Article{TakahashiWFBPEAOS:2020:EqPlBu,
author = "Takahashi, Hisao and Wrasse, Cristiano Max and Figueiredo, Cosme
Alexandre Oliveira Barros and Barros, D. and Paulino, Igo and
Essien, Patrick and Abdu, Mangalathayil Ali and Otsuka, Yuichi and
Shiokawa, Kazuo",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Universidade Federal de Campina Grande
(UFCG)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Nagoya
University} and {Nagoya University}",
title = "Equatorial plasma bubble occurrence under propagation of MSTID and
MLT gravity waves",
journal = "Journal of Geophysical Research: Space Physics",
year = "2020",
volume = "125",
number = "9",
pages = "e2019JA027566",
month = "Sept.",
abstract = "We observed a signature of equatorial plasma bubbles (EPBs)
followed by a medium\‐scale traveling ionospheric
disturbance (MSTID) crossing the solar terminator over the
geomagnetic equator during the period of post\‐sunset rise
(PSSR) of the F layer. Simultaneous observations of the EPBs and
the MSTIDs by ground\‐based Global Navigation Satellite
System receivers and OI 630\‐nm imagers, ionospheric
parameters by ionosondes, and mesospherelower thermosphere (MLT)
gravity waves (MLT\‐GWs) by OH airglow imagers have been
carried out in the equatorial and low\‐latitude region of
Brazil. On 1617 September 2015, MSTIDs with very fast horizontal
phase speeds, propagating toward northeast (NE), were observed
over the latitude region of 030°S in the afternoon to evening time
zone. It was geomagnetically quiet time (Kp: 23). An EPB
development was observed after one of the MSTIDs crossed the solar
terminator at 22:00 UT. Large\‐scale MLT\‐GWs with
slower phase speeds were also observed both at S{\~a}o Jo{\~a}o
do Cariri (7.5°S, 35.0°W) propagating from southwest (SW) to NE
and Cachoeira Paulista (22.7°S, 45.0°W) propagating northward.
This is to report on what we consider as a signature of direct
seeding of EPBs by an MSTID that was likely induced by a secondary
GW from tropospheric deep cloud convections to the south. This
study highlights a possible dynamical process from the troposphere
to ionosphere via this vertical coupling process over the 2,500 km
of horizontal distance.",
doi = "10.1029/2019JA027566",
url = "http://dx.doi.org/10.1029/2019JA027566",
issn = "2169-9402",
language = "en",
targetfile = "takahashi_equatorial.pdf",
urlaccessdate = "02 maio 2024"
}