Mapping lightning in the sky with a mini array

Autor: Zhongjian Liu, Kuang Koh, Michael J. Rycroft, Sven Erik Enno, Serge Soula, S. Pedeboy, Jacqueline Sugier, Andrew Mezentsev, Martin Füllekrug
Přispěvatelé: METEORAGE, Laboratoire d'aérologie (LAERO), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2016
Předmět:
010504 meteorology & atmospheric sciences
Wave propagation
media_common.quotation_subject
Earth and Planetary Sciences(all)
FOS: Physical sciences
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences
wave propagation
010502 geochemistry & geophysics
01 natural sciences
law.invention
Optics
Physics - Space Physics
law
electromagnetic noise and interference
Very low frequency
0105 earth and related environmental sciences
media_common
Wavefront
Physics
Lightning detection
array analysis
business.industry
atmospheric and space electricity
Lightning
Space Physics (physics.space-ph)
Physics - Atmospheric and Oceanic Physics
Wavelength
Geophysics
lightning discharges
13. Climate action
Sky
[SDU]Sciences of the Universe [physics]
Atmospheric and Oceanic Physics (physics.ao-ph)
Thunderstorm
General Earth and Planetary Sciences
business
Zdroj: Geophysical Research Letters
Geophysical Research Letters, 2016, 43, pp.10,448-10,454. ⟨10.1002/2016GL070737⟩
Füllekrug, M, Liu, Z, Koh, K, Mezentsev, A, Pedeboy, S, Soula, S, Enno, S E, Sugier, J & Rycroft, M J 2016, ' Mapping lightning in the sky with a mini array ', Geophysical Research Letters, vol. 43, no. 19, pp. 10,448-10,454 . https://doi.org/10.1002/2016GL070737
ISSN: 0094-8276
1944-8007
DOI: 10.1002/2016GL070737⟩
Popis: International audience; Mini arrays are commonly used for infrasonic and seismic studies. Here we report for the first time the detection and mapping of distant lightning discharges in the sky with a mini array. The array has a baseline to wavelength ratio ∼4.2·10-2 to record very low frequency electromagnetic waves from 2 to 18 kHz. It is found that the mini array detects ∼69 lightning pulses per second from cloud-to-ground and in-cloud discharges, even though the parent thunderstorms are ∼900-1100 km away and a rigorous selection criterion based on the quality of the wavefront across the array is used. In particular, lightning pulses that exhibit a clockwise phase progression are found at larger elevation angles in the sky as the result of a birefringent subionospheric wave propagation attributed to ordinary and extraordinary waves. These results imply that long range lightning detection networks might benefit from an exploration of the wave propagation conditions with mini arrays.
Databáze: OpenAIRE
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