Climatology and modeling of ionospheric scintillations and irregularity zonal drifts at the equatorial anomaly crest region

MTAH Muella, MH Duarte-Silva… - Annales …, 2017 - angeo.copernicus.org
In this study the climatology of ionospheric scintillations and the zonal drift velocities of
scintillation-producing irregularities are depicted for a station located under the southern …

First report of an eclipse from Chilean ionosonde observations: Comparison with total electron content estimations and the modeled maximum electron concentration …

M Bravo, M Martínez‐Ledesma… - Journal of …, 2020 - Wiley Online Library
The ionospheric responses to the total solar eclipse on 2 July 2019 over low latitudes in
southern South America are presented. Ionosonde observations were used within the totality …

Different Sporadic‐E (Es) Layer Types Development During the August 2018 Geomagnetic Storm: Evidence of Auroral Type (Esa) Over the SAMA Region

J Moro, J Xu, CM Denardini… - Journal of …, 2022 - Wiley Online Library
Sporadic‐E (Es) layers are investigated over five Digisonde stations located inside (Santa
Maria and Cachoeira Paulista), boundary (São Luís), and outside (Millstone Hill and Port …

Prediction of the ionospheric response to the 14 December 2020 total solar eclipse using SUPIM‐INPE

M Martínez‐Ledesma, M Bravo, B Urra… - Journal of …, 2020 - Wiley Online Library
We present the first prediction of the ionospheric response to the 14 December 2020 solar
eclipse using the SUPIM‐INPE model. Simulations are made for all known ionosonde …

Understanding inter-hemispheric traveling ionospheric disturbances and their mechanisms

OF Jonah, S Zhang, AJ Coster, LP Goncharenko… - Remote Sensing, 2020 - mdpi.com
Traveling ionospheric disturbances (TIDs) are wave-like disturbances in ionospheric plasma
density. They are often observed during both quiet (medium-scale TID) and geomagnetically …

Climatology of intermediate descending layers (or 150 km echoes) over the equatorial and low-latitude regions of Brazil during the deep solar minimum of 2009

ÂM dos Santos, IS Batista, MA Abdu… - Annales …, 2019 - angeo.copernicus.org
In this work, we have performed a study for the first time on the climatology of the
intermediate descending layers (ILs) over Brazilian equatorial and low-latitude regions …

Ionospheric response modeling under eclipse conditions: Evaluation of 14 December 2020, total solar eclipse prediction over the South American sector

MA Bravo, MG Molina, M Martínez-Ledesma… - Frontiers in Astronomy …, 2022 - frontiersin.org
In this work, we evaluate the SUPIM-INPE model prediction of the 14 December 2020, total
solar eclipse over the South American continent. We compare the predictions with data from …

Storm time equatorial plasma bubble zonal drift reversal due to disturbance Hall electric field over the Brazilian region

AM Santos, MA Abdu, JR Souza… - Journal of …, 2016 - Wiley Online Library
The dynamics of equatorial ionospheric plasma bubbles over Brazilian sector during two
magnetic storm events are investigated in this work. The observations were made at varying …

Nocturnal Sporadic Cusp‐Type Layer (Esc) Resulting From Anomalous Excess Ionization Over the SAMA Region During the Extreme Magnetic Storm on 11 May …

LCA Resende, Y Zhu, AM Santos… - Journal of …, 2024 - Wiley Online Library
Digisonde data showed a peculiar behavior in the nighttime lower ionosphere over
Cachoeira Paulista (CXP, 22.7° S, 45° W, dip∼ 35°), a low‐latitude station located inside …

Seasonal evolution of the ionospheric summer evening and Weddell Sea Anomalies: Antarctic Peninsula area

MA Bravo, CU Villalobos, CC Rivera… - Advances in Space …, 2024 - Elsevier
Diurnal and seasonal variations of the maximum electron concentration of the ionosphere
(NmF2) depart from the expected variations in some geographical regions. These anomalies …