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Titel |
The persistence of equatorial spread F – an analysis on seasonal, solar activity and geomagnetic activity aspects |
VerfasserIn |
V. Sreeja, C. V. Devasia, Sudha Ravindran, R. Sridharan |
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. 2 ; Nr. 27, no. 2 (2009-02-02), S.503-510 |
Datensatznummer |
250016390
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Publikation (Nr.) |
copernicus.org/angeo-27-503-2009.pdf |
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Zusammenfassung |
The persistence (duration) of Equatorial Spread F (ESF), which has
significant impact on communication systems, is addressed. Its behavior
during different seasons and geomagnetic activity levels under the solar
maximum (2001) and minimum (2006) conditions, is reported using the data
from the magnetic equatorial location of Trivandrum (8.5° N; 77° E;
dip 0.5° N) in India. The study reveals that the persistence of the
irregularities can be estimated to a reasonable extent by knowing the post
sunset F region vertical drift velocity (Vz) and the magnetic activity
index Kp. Any sort of advance information on the possible persistence
of the ionospheric irregularities responsible for ESF is important for
understanding the scintillation morphology, and the results which form the
first step in this direction are presented and discussed. |
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