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| Titel |
Counter electrojet features in the Brazilian sector: simultaneous observation by radar, digital sounder and magnetometers |
| VerfasserIn |
C. M. Denardini, M. A. Abdu, H. C. Aveiro, L. C. A. Resende, P. D. S. C. Almeida, Ê. P. A. Olívio, J. H. A. Sobral, C. M. Wrasse |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 27, no. 4 ; Nr. 27, no. 4 (2009-04-03), S.1593-1603 |
| Datensatznummer |
250016483
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| Publikation (Nr.) |
 copernicus.org/angeo-27-1593-2009.pdf |
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| Zusammenfassung |
| In the present work we show new results regarding equatorial counter
electrojet (CEJ) events in the Brazilian sector, based on the RESCO radar,
two set of fluxgate magnetometer systems and a digital sounder. RESCO radar
is a 50 MHz backscatter coherent radar installed in 1998 at São
Luís (SLZ, 2.33° S, 44.60° W), an equatorial site. The Digital
sounder routinely monitors the electron density profile at the radar site.
The magnetometer systems are fluxgate-type installed at SLZ and Eusébio
(EUS, 03.89° S, 38.44° W). From the difference between the
horizontal component of magnetic field at SLZ station and the same component
at EUS (EEJ ground strength) several cases of westward morning electrojet
and its normal inversion to the eastward equatorial electrojet (EEJ) have
been observed. Also, the EEJ ground strength has shown some cases of CEJ
events, which been detected with the RESCO radar too. Detection of these
events were investigated with respect to their time and height of
occurrence, correlation with sporadic E (Es) layers at the same time, and
their spectral characteristics as well as the radar echo power intensity. |
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