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| Titel |
First simultaneous observations of optical lightning and terrestrial gamma flash from space |
| VerfasserIn |
Nikolai Østgaard, Thomas Gjesteland, Brant Carlson, Andrew Collier, Steve Cummer, Gaopeng Lu, Hugh Christian |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250073425
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| Zusammenfassung |
| We present the very first simultaneous detection of a terrestrial gamma-ray flash (TGF) and the optical signal from lightning. By fortuitous coincidence two independent satellites passed less than 300 km from the thunderstorm system that produced a TGF that lasted 70 μs. Together with two independent measurements of radio emissions we have an unprecedented coverage of the event. We find that the TGF was produced ´deep´ in the thundercloud at the initial stage of an intracloud (IC) lightning before the leader reached the cloud top and extended horizontally. A strong radio pulse was produced by the TGF itself. This is the first time the sequence of radio pulses, TGF and optical emissions has been identified. |
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