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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.)

E region electric fields at the dip equator and anomalous conductivity effects

Texto completo
Autor(es):
Denardini, C. M. [1] ; Aveiro, H. C. [2] ; Sobral, J. H. A. [1] ; Bageston, J. V. [1] ; Guizelli, L. M. [1, 3] ; Resende, L. C. A. [1] ; Moro, J. [1]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Natl Inst Space Res, Aeron Div, Sao Jose Dos Campos, SP - Brazil
[2] Cornell Univ, Ithaca, NY - USA
[3] Univ Taubate, Dept Elect Engn, Taubate, SP - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Advances in Space Research; v. 51, n. 10, p. 1857-1869, MAY 15 2013.
Citações Web of Science: 8
Resumo

Zonal and vertical electric fields were estimated at E region heights in the Brazilian sector. Zonal electric fields are obtained from the vertical electric fields based on their relation through the Hall-to-Pedersen ionospheric conductivities ratio. The technique for obtaining the vertical electric field is based on its proportionality to the Doppler velocities of type 2 irregularities as detected by coherent radars. The 50 MHz backscatter coherent (RESCO) radar was used to estimate the Doppler velocities of the type 2 irregularities embedded in the equatorial electrojet. A magnetic field-line integrated conductivity model was developed to provide the conductivities. It considers a multi-species ionosphere and a multi-species neutral atmosphere, and uses the IRI 2007, the MISTS 2000 and the IGRF 10 models as input parameters for ionosphere, neutral atmosphere and Earth's magnetic field, respectively. The ion-neutral collision frequencies of all the species are combined through the momentum transfer collision frequency equation, and different percentages of electron-neutral collisions were artificially included for studying the implication of such increase in the zonal electric field, which resulted ranging from 0.13 to 0.49 mV/m between the 8 and 18 h (LT), under quiet magnetic conditions. (C) 2012 COSPAR. Published by Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 10/06608-2 - Estudo da dinâmica da região da mesosfera e baixa termosfera (80 a 100 km de altitude) na Ilha Rei George, Antártica (62 graus S)
Beneficiário:José Valentin Bageston
Linha de fomento: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 11/00898-1 - 2011 International Union of Geodesy and Geophysics (IUGG) General Assembly
Beneficiário:Clezio Marcos de Nardin
Linha de fomento: Auxílio à Pesquisa - Reunião - Exterior