Dataset Information

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

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.

SUBMITTER: Machado JGO

PROVIDER: S-EPMC9286657 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature

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Publications

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

Machado J G O JGO Hare B M BM Scholten O O Buitink S S Corstanje A A Falcke H H Hörandel J R JR Huege T T Krampah G K GK Mitra P P Mulrey K K Nelles A A Pandya H H Rachen J P JP Thoudam S S Trinh T N G TNG Ter Veen S S Winchen T T

Earth and space science (Hoboken, N.J.) 20220421 4

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 flash ...[more]

PMID: 35865721

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Dataset Information

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

Publications

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

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