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K - change: Is it a static field of a chaotic pulse burst?
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2014 (English)In: 2014 INTERNATIONAL CONFERENCE ON LIGHTNING PROTECTION (ICLP), 2014, 634-642 p.Conference paper, Published paper (Refereed)
Abstract [en]

Electric field changes associated with K - changes have been studied since 1956. In this study, the electric field variations of K changes observed in the tropics, in Sri Lanka, was analyzed to study the inter K change duration, K change duration, and possible contribution from other activities on K changes. Selected 144 k-changes of 64 lightning flashes, measured with 6.4 ns sampling rate were used for the analysis. The inter K change time interval was found to vary from 0.62 ms to 75.92 ms with an average of 16.92 ms. The duration of K-changes were found to vary from 0.44 ms to 1.65 ms with an average value of 0.48 ms. In this study, it was observed that all K - changes were combined with chaotic pulse trains (CPT). This suggests that the K - changes may be a result of slow electric field changes associated with chaotic pulse activities.

Place, publisher, year, edition, pages
2014. 634-642 p.
Keyword [en]
lightning, K-changes, chaotic pulse burst, static field
National Category
Meteorology and Atmospheric Sciences Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-261727ISI: 000358572100120ISBN: 978-1-4799-3544-4 (print)OAI: oai:DiVA.org:uu-261727DiVA: diva2:851168
Conference
International Conference on Lightning Protection (ICLP), OCT 11-18, 2014, Shanghai, PEOPLES R CHINA
Available from: 2015-09-03 Created: 2015-09-03 Last updated: 2015-09-03Bibliographically approved

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