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Titel |
Relationships between pre-sunset electrojet strength, pre-reversal enhancement and equatorial spread-F onset |
VerfasserIn |
J. Uemoto, T. Maruyama, S. Saito, M. Ishii, R. Yoshimura |
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 ; 28, no. 2 ; Nr. 28, no. 2 (2010-02-08), S.449-454 |
Datensatznummer |
250016776
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Publikation (Nr.) |
copernicus.org/angeo-28-449-2010.pdf |
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Zusammenfassung |
The virtual height of the bottom side F-region (h'F) and
equatorial spread-F (ESF) onsets at Chumphon (10.7° N,
99.4° E; 3.3° N magnetic latitude) were compared
with the behaviour of equatorial electrojet (EEJ) ground strength at
Phuket (8.1° N, 98.3° E; 0.1° N magnetic
latitude) during the period from November 2007 to October 2008.
Increase in the F-layer height and ESF onsets during the evening
hours were well connected with the EEJ ground strength before
sunset, namely, both the height increase and ESF onsets were
suppressed when the integrated EEJ ground strength for the period
from 1 to 2 h prior to sunset was negative. The finding suggests
observationally that the pre-sunset E-region dynamo current and/or
electric field are related to the F-region dynamics and ESF onsets
around sunset. |
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