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- Nanayakkara, Sankha, et al.
(author)
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K - change : Is it a static field of a chaotic pulse burst?
- 2014
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In: 2014 INTERNATIONAL CONFERENCE ON LIGHTNING PROTECTION (ICLP). - 9781479935444 ; , s. 634-642
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Conference paper (peer-reviewed)abstract
- 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.
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- Vayanganie, S. P. A., et al.
(author)
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Electric Field Change of M Component
- 2014
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In: 2014 INTERNATIONAL CONFERENCE ON LIGHTNING PROTECTION (ICLP). - : IEEE conference proceedings. - 9781479935444 ; , s. 1725-1728
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Conference paper (peer-reviewed)abstract
- Temporary increase of luminosity of lightning channel during the stage of long continuing current is known as the M components. In this study 17 M components of 14 lightning flashes recorded with 10 ns sampling resolution is analyzed. Results suggest that in all analyzed cases the electric field change of M components is embedded with chaotic pulses.
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