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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Equatorial E Region Electric Fields and Sporadic E Layer Responses to the Recovery Phase of the November 2004 Geomagnetic Storm

Texto completo
Autor(es):
Moro, J. [1, 2] ; Resende, L. C. A. [3] ; Denardini, C. M. [3] ; Xu, J. [1] ; Batista, I. S. [3] ; Andrioli, V. F. [3, 1] ; Carrasco, A. J. [4] ; Batista, P. P. [3] ; Schuch, N. J. [2]
Número total de Autores: 9
Afiliação do(s) autor(es):
[1] Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing - Peoples R China
[2] CRS COCRE INPE, Southern Reg Space Res Ctr, Santa Maria, RS - Brazil
[3] INPE, Natl Inst Space Res, Sao Jose Dos Campos - Brazil
[4] Los Andes Univ, Phys Dept, Merida - Venezuela
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS; v. 122, n. 12, p. 12517-12533, DEC 2017.
Citações Web of Science: 1
Resumo

Equatorial E region electric fields (EEFs) inferred from coherent radar data, sporadic- E (Es) layers observed from a digital ionosonde data, and modeling results are used to study the responses of the equatorial E region over Sao Luis (SLZ, 2.3 degrees S, 44.2 degrees W, similar to-7 degrees dip angle), Brazil, during the super storm of November 2004. The EEF is presented in terms of the zonal (E-y) and vertical (E-z) components in order to analyze the corresponding characteristics of different types of Es seen in ionograms and simulated with the E region ionospheric model. We bring out the variabilities of E-y and E-z components with storm time changes in the equatorial E region. In addition, some aspects of the electric fields and E-s behavior in three cases of weak, very weak, and strong Type II occurrences during the recovery phase of the geomagnetic storm are discussed. The connection between the enhanced occurrence and suppressions of the Type II irregularities and the q-type E-s (Es-q) controlled by electric fields, with the development or disruption of the blanketing sporadic E (Es-b) layers produced by wind shear mechanism, is also presented. The mutual presence of Esq along with the Esb occurrences is a clear indicator of the secular drift of the magnetic equator and hence that of the equatorial electrojet (EEJ) over SLZ. The results show evidence about the EEJ and E-s layer electrodynamics and coupling during geomagnetic disturbance time electric fields. (AU)

Processo FAPESP: 12/08445-9 - Estudo da variabilidade dia-a-dia da mesosfera, termosfera e ionosfera em baixas latitudes e região equatorial, durante o ciclo solar 24
Beneficiário:Paulo Roberto Fagundes
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 00/09510-1 - Pesquisas da alta atmosfera em baixas latitudes sobre o Brasil
Beneficiário:Barclay Robert Clemesha
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 14/11198-9 - Análise do Efeito de Campos Elétricos Perturbados nas Camadas Es em Regiões Equatoriais e de Baixas Latitudes
Beneficiário:Láysa Cristina Araújo Resende Chagas
Linha de fomento: Bolsas no Brasil - Pós-Doutorado