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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Long-lasting stagnant equatorial plasma bubble event and the related scintillation over the Brazilian region

Full text
Author(s):
Sousasantos, J. [1] ; Abdu, M. A. [1, 2] ; Moraes, A. O. [3] ; Vani, B. C. [4] ; Silva, R. P. [2] ; Sobral, J. H. A. [2]
Total Authors: 6
Affiliation:
[1] Inst Tecnol Aeronaut ITA, Sao Jose Dos Campos, SP - Brazil
[2] Inst Nacl Pesquisas Espaciais INPE, Sao Jose Dos Campos, SP - Brazil
[3] Inst Aeronaut & Espaco IAE, Sao Jose Dos Campos, SP - Brazil
[4] Inst Fed Educ Ciencia & Tecnol Sao Paulo IFSP PEP, Sao Paulo, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Advances in Space Research; v. 68, n. 11, p. 4678-4690, DEC 1 2021.
Web of Science Citations: 0
Abstract

Diverse studies about equatorial plasma bubble structures and their relation with ionospheric scintillation have been performed in the last decades. Among many findings, the investigations usually reported dominant plasma bubble eastward velocity with a magnitude of few tens of m/s and larger amplitude scintillation for transionospheric signals aligned with these depleted structures. However, an uncommon long-lasting event with negligible average zonal drift prevailing for hundreds of minutes was registered over the Brazilian region, allowing a case study of the scintillation pattern under this particular condition. Data from ionosondes, all-sky imager (6300 angstrom filter), geostationary satellites and Global Navigation Satellite System were used here, covering the eastern portion of the Brazilian ionosphere. The results show that the scintillation was less intense than in other nights around the event, suggesting that larger plasma density gradients and sequential bubble structures seem to cause more severe scintillation scenario than the alignment condition alone, even though the last also contributes to worsen the scintillation effects. Regarding the stagnant bubble pattern, the results suggest prevailing E region Hall conductivity and equatorward wind as potential agents. (C) 2021 COSPAR. Published by Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 17/50115-0 - GNSS technology for supporting air navigation
Grantee:Joao Francisco Galera Monico
Support Opportunities: Research Grants - Research in Public Policies
FAPESP's process: 16/24970-7 - The Scintillation Prediction Observation Research Task (SPORT)
Grantee:Mangalathayil Ali Abdu
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 18/06158-9 - Statistical Studies of the Variation of Ionospheric Parameters and Their Relationship with Space Weather Events
Grantee:Jonas de Sousa dos Santos
Support Opportunities: Scholarships in Brazil - Post-Doctoral