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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 zonal electric fields inferred from a 3-D electrostatic potential model and ground-based magnetic field measurements

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Autor(es):
Shume, E. B. [1] ; de Paula, E. R. [1] ; Maus, S. [2] ; Hysell, D. L. [3] ; Rodrigues, F. S. [4] ; Bekele, A. [5]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] INPE DAE, Natl Inst Space Res, BR-12227010 Sao Paulo - Brazil
[2] NOAA, Natl Geophys Data Ctr, Boulder, CO 80305 - USA
[3] Cornell Univ, Dept Earth & Atmospher Sci, Ithaca, NY 14853 - USA
[4] Atmospher & Space Technol Res Associates, San Antonio, TX 78249 - USA
[5] Univ Addis Ababa, Dept Phys, Addis Ababa - Ethiopia
Número total de Afiliações: 5
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF GEOPHYSICAL RESEARCH; v. 114, JUN 6 2009.
Citações Web of Science: 4
Resumo

We present a new technique to infer quiet time zonal electric fields in the daytime equatorial ionosphere. The electric field inference technique utilizes a three-dimensional (3-D) electrostatic potential model of the low-latitude ionosphere constrained by ground-based magnetic field measurements. To test this technique, inferred zonal electric fields for the Peruvian sector in Jicamarca (11.95 degrees S, 283.13 degrees E, 0.6 degrees N dip latitude) were compared with zonal electric field (vertical drift) measurements made by the Jicamarca Incoherent Scatter Radar. The comparison shows a good agreement between the inferred and measured electric fields. An example of electric field estimation for Davao (7.4 degrees N, 125.4 degrees E, 0.58 degrees S dip latitude) in the Philippines sector is also presented in this report. Inferred electric fields for Davao are in good agreement with F region vertical plasma drifts measured by drift sensors onboard the AE-E and ROCSAT-1 satellites on that longitude sector. Our results suggest that realistic estimates of quiet time zonal electric fields for the equatorial ionosphere can be obtained from the 3-D potential model whenever observatory magnetic field measurements are available. (AU)

Processo FAPESP: 07/08185-9 - Investigação das irregularidades do plasma do eletrojato equatorial e do eco de 150 km no setor brasileiro utilizando multi-instrumentos e modelagem
Beneficiário:Esayas Belay Shume
Linha de fomento: Bolsas no Brasil - Pós-Doutorado