@Article{AmadiQiPaMcKhSaSá:2023:InWeEq,
author = "Amadi, Brians Chinonso and Qian, L. and Paula, Eurico Rodrigues de
and MclNerney, J. M. and Kherani, Esfhan Alam and Santos, Angela
Machado dos and S{\'a}nchez Juarez, Sa{\'u}l Alejandro",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {National
Center for Atmospheric Research (NCAR)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais
(INPE)}",
title = "Intensification and Weakening of Equatorial Plasma Bubble
Development Observed by GOLD During Different Phases of a
Geomagnetic Storm",
journal = "Journal of Geophysical Research: Space Physics",
year = "2023",
volume = "128",
number = "10",
pages = "e2022JA031262",
keywords = "equatorial plasma bubbles, GOLD, WACCM-X, pre-reversal
enhancement, prompt penetration electric field, disturbance dynamo
electric field.",
abstract = "Equatorial plasma bubble (EPB) development during different phases
of the geomagnetic storm of 3-4 November 2021 (SYMHmin = -118 nT)
was examined using observations and simulations. The initial phase
of the storm coincided with postsunset (about 30 min after sunset)
at Fortaleza (FZ) and Sao Luis (SL) with longitudes of \&
SIM;38.45 \& DEG;W and \& SIM;44 \& DEG;W respectively on
November 3 while the recovery phase of the storm started at 12:45
UT on November 4. GOLD shows the longest (shortest) extension of
EPBs on November 3 (4) compared to days before and after November
3 and 4, including quiet days. This indicates an intensification
(weakening) of EPBs on November 3 (4). From ionosondes at FZ and
SL, a strong (weak) range spread F (SSF (RSF)) was observed on
November 3 (4). The postsunset peak F layer height on November 3
reached 450 km and exceeded the preceding and succeeding days by
\& SIM;50-100 km at SL indicating the presence of a Prompt
Penetration Electric Field (PPEF) which enhanced EPB development
via the favorable postsunset vertical E x B and Rayleigh-Taylor
instability (RTI) mechanisms on November 3. The lower-than-quiet
time F layer height observed on November 4 during Pre-reversal
enhancement (PRE) indicates the presence of a westward-oriented
Disturbance Dynamo Electric Field (DDEF) that undermined RTI
growth and led to the weakening of EPB development. Simulation
results confirm that the storm-time electric fields modified the
evening-time ionosphere and influenced the magnitude of vertical E
x B drift required for the development of EPBs. Intensification
(weakening) of equatorial plasma bubble (EPB) is observed by GOLD
during the initial (recovery) phase of a stormStorm-origin
electric fields considerably altered the pre-reversal electric
field and influenced EPB developmentBoth observations and
simulations confirm that disturbance electric fields modified the
plasma distribution and instability growth rate.",
doi = "10.1029/2022JA031262",
url = "http://dx.doi.org/10.1029/2022JA031262",
issn = "2169-9402",
label = "self-archiving-INPE-MCTIC-GOV-BR",
language = "en",
targetfile = "JGR Space Physics - 2023 - Amadi - Intensification and Weakening
of Equatorial Plasma Bubble Development Observed by GOLD.pdf",
urlaccessdate = "29 jun. 2024"
}