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| Titel |
Some unusual discrete VLF emissions observed at a low-latitude ground station at Agra |
| VerfasserIn |
B. Singh |
| 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 ; 15, no. 8 ; Nr. 15, no. 8, S.1005-1008 |
| Datensatznummer |
250012908
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| Publikation (Nr.) |
 copernicus.org/angeo-15-1005-1997.pdf |
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| Zusammenfassung |
| A detailed analysis of the VLF emissions data
obtained during occasional whistler campaigns at the low-latitude ground station
Agra (geomagnetic latitude 17°1' N, L = 1.15) has yielded some unusual
discrete VLF emissions of the rising type. These include (1) emissions occurring
at time intervals increasing in ge ommetrical progression, (2) emissions
occuring simulta neously in different frequency ranges and (3) emissions
observed during daytime. In the present study, the observed characteristics of
these emissions are described and interpreted. It is shown that the increasing
time delay between different components of the emissions match closely with the
propagation time delays between different hops of a whistler of dispersion 19 s1/2,
the unusual occurrence of the emissions in two different frequency ranges
approximately at the same time may possibly be linked with their generation at
two different locations, and the occurrence of emissions during daytime may be
due to propagation under the influence of equatorial anomaly. |
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