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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.)

OI 630.0 nm all-sky image observations of medium-scale traveling ionospheric disturbances at geomagnetic conjugate points

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Author(s):
Stefanello, M. B. [1, 2, 3] ; Muella, M. T. A. H. [4] ; Amorim, D. C. M. [5] ; Machado, C. S. [1, 2] ; Bageston, J. V. [5] ; Pimenta, A. A. [5] ; Martinis, C. [6] ; Sullivan, C. [6] ; Bittencourt, J. A. [5] ; Schuch, N. J. [1, 2]
Total Authors: 10
Affiliation:
[1] Univ Fed Santa Maria, South Reg Ctr Space Res, LACESM CT, Natl Inst Space Res CRS INPE, BR-97119900 Santa Maria, RS - Brazil
[2] Univ Fed Santa Maria, Space Sci Lab, LACESM CT, BR-97119900 Santa Maria, RS - Brazil
[3] Univ Fed Santa Maria, BR-97119900 Santa Maria, RS - Brazil
[4] Univ Vale Paraiba UNIVAP, IP&D, Sao Jose Dos Campos - Brazil
[5] Natl Inst Space Res DAE INPE, Aeron Div, Sao Jose Dos Campos - Brazil
[6] Boston Univ, Ctr Space Phys, Boston, MA 02215 - USA
Total Affiliations: 6
Document type: Journal article
Source: JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS; v. 128, p. 58-69, JUN 2015.
Web of Science Citations: 5
Abstract

This paper presents a medium-scale traveling ionospheric disturbance (MSTID) occurrence detected through the CH 630.0 nm emission all-sky images, obtained by ground-based imaging systems installed at close geomagnetic conjugate locations: one at the Southern Space Observatory-SSO/CRS/INPE-MCTI, (29.4 degrees S, 53.8 degrees W), in Sao Martinho da Serra, RS, Brazil, and another at the Arecibo Observatory (18.3 N, 66.7 degrees W), in Puerto Rico. The images obtained show the optical signature of MSTIDs (low intensity regions of 630.0 nm airglow emission), propagating simultaneously in both hemispheres, during geomagnetically quiet conditions (Kp < 3). Observations using digital ionosonde installed at Falkland Islands (51.4 degrees S, 57.5 degrees W) and Ramey, Puerto Rico (18.5 degrees N, 67.1 degrees W) show an abrupt upward motion of the ionospheric F region plasma and the occurrence of frequency-type spread-F that could be related to the MSTIDs observed optically. Using Global Positioning System (GPS) receiver data, we also obtained the rate of the Total Electronic Content (TEC) change (ROT) for two geomagnetically conjugated sites-Santa Maria (29.7 degrees S, 53.7 degrees W) and Virgin Islands (17.7 degrees N, 64.7 degrees W). The analysis of TEC allows us to identify an irregular ionization in the F layer associated with the passage of an MSTID. The possible effects of the South America Magnetic Anomaly (SAMA) on the electrodynamic processes that control the inter-hemispheric coupling that give origin to the conjugate MSTIDs are highlighted and discussed. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 11/51661-1 - Neutral wind and temperature measurements in the upper atmosphere and ionosphere in the Brazilian Amazon region
Grantee:Alexandre Alvares Pimenta
Support Opportunities: Regular Research Grants