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The Relationship of Lightning Radio Pulse Amplitudes and Source Altitudes as Observed by LOFAR

Machado, J. G. O. ; Hare, B. M.; Scholten, O.; Buitink, S.; Corstanje, A.; Falcke, H.; Hörandel, J. R.; Huege, T. 1; Krampah, G. K.; Mitra, P.; Mulrey, K.; Nelles, A.; Pandya, H.; Rachen, J. P.; Thoudam, S.; Trinh, T. N. G.; Veen, S. ter; Winchen, T.
1 Institut für Astroteilchenphysik (IAP), Karlsruher Institut für Technologie (KIT)

Abstract:

When a lightning flash is propagating in the atmosphere it is known that especially the negative leaders emit a large number of very high frequency (VHF) radio pulses. It is thought that this is due to streamer activity at the tip of the growing negative leader. In this work, we have investigated the dependence of the strength of this VHF emission on the altitude of such emission for two lightning flashes as observed by the Low Frequency ARray (LOFAR) radio telescope. We find for these two flashes that the extracted amplitude distributions are consistent with a power-law, and that the amplitude of the radio emissions decreases very strongly with source altitude, by more than a factor of 2 from 1 km altitude up to 5 km altitude. In addition, we do not find any dependence on the extracted power-law with altitude, and that the extracted power-law slope has an average around 3, for both flashes.


Verlagsausgabe §
DOI: 10.5445/IR/1000146060
Veröffentlicht am 12.05.2022
Originalveröffentlichung
DOI: 10.1029/2021EA001958
Scopus
Zitationen: 2
Web of Science
Zitationen: 2
Dimensions
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 2333-5084
KITopen-ID: 1000146060
HGF-Programm 51.13.04 (POF IV, LK 01) Kosmische Strahlung Technologien
Erschienen in Earth and Space Science
Verlag American Geophysical Union (AGU)
Band 9
Heft 4
Seiten e2021EA001958
Nachgewiesen in Dimensions
Web of Science
Scopus
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