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| Titel |
Joint radio and optical observations of the most radio-powerful intracloud lightning discharges |
| VerfasserIn |
A. R. Jacobson, T. E. L. Light, T. Hamlin, R. Nemzek |
| 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 ; 31, no. 3 ; Nr. 31, no. 3 (2013-03-21), S.563-580 |
| Datensatznummer |
250019015
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| Publikation (Nr.) |
 copernicus.org/angeo-31-563-2013.pdf |
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| Zusammenfassung |
| The most radio-powerful intracloud lightning emissions are associated with a
phenomenon variously called "narrow bipolar events" or "compact
intracloud discharges". This article examines in detail the coincidence
and timing relationship between, on the one hand, the most radio-powerful
intracloud lightning events and, on the other hand, optical outputs (or lack
thereof) of the same discharge process. This is done, first, using
coordinated very high frequency (VHF) and optical observations from the FORTE satellite and,
second, using coordinated sferic and all-sky optical observations from the
Los Alamos Sferic Array. In both cases, it is found that the sought
coincidences are exceedingly rare. Moreover, in the handful of coincidences
between optical and intense radio emissions that have been identified, the radio
emissions differ from their usual behavior, by being accompanied by
approximately simultaneous "conventional" lightning radio emissions. It is
implied that the most radio-powerful intracloud emission process essentially
differs from ordinary incandescent lightning. |
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