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Temporal features of different lightning events revealed from wavelet transform
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
ept of Mathematics, Statistics and Physics, Federal University of the Valleys of Jequitinhonha e Mucuri Diamantina, Brasilien.
2011 (English)In: Journal of Atmospheric and Solar-Terrestrial Physics, ISSN 1364-6826, E-ISSN 1879-1824, Vol. 73, no 4, p. 507-515Article in journal (Refereed) Published
Abstract [en]

Various lightning events are analysed using wavelet transform. The events include PB pulses, stepped leaders, first return strokes, subsequent strokes associated with negative ground flashes, positive return strokes and narrow bipolar pulses. Time domain electric fields were recorded from tropical and temperate thunderstorms. PB pulses pertinent to the tropical thunderstorms are found to radiate in the average frequency range 51-739 kHz. Leaders are found to radiate in the frequency range 87-720 kHz. The energy radiated by the negative return strokes is predominant in the range 2.8-40 kHz. The energy radiated by the first subsequent strokes predominantly lies in the frequency range 4.5-55 kHz. Positive return strokes are found to radiate predominantly in the frequency range 5.5-81 kHz. Narrow bipolar pulses are found to predominantly radiate in the frequency range 58-714 kHz.

Place, publisher, year, edition, pages
2011. Vol. 73, no 4, p. 507-515
Keywords [en]
Lightning, Electromagnetic fields, Wavelet transform, Frequency spectrum
National Category
Physical Sciences Engineering and Technology
Research subject
Engineering Science with specialization in Science of Electricity
Identifiers
URN: urn:nbn:se:uu:diva-149710DOI: 10.1016/j.jastp.2010.11.009ISI: 000287909600012OAI: oai:DiVA.org:uu-149710DiVA, id: diva2:405446
Available from: 2011-03-22 Created: 2011-03-22 Last updated: 2017-12-11Bibliographically approved

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Cooray, Vernon

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