High speed optical observations of cloud flashes

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dc.contributor.author SPA Vayanganie
dc.contributor.author Mahendra Fernando
dc.contributor.author Sonnadara, D.U.J.
dc.contributor.author DC Perera
dc.contributor.author Vernon Cooray
dc.date.accessioned 2020-10-27T17:24:33Z
dc.date.available 2020-10-27T17:24:33Z
dc.date.issued 2014
dc.identifier.citation International Conference on Lightning Protection (ICLP), 752-755 en_US
dc.identifier.uri http://archive.cmb.ac.lk:8080/xmlui/handle/70130/4880
dc.description.abstract Abstract—Luminosity variations of natural cloud lightning channels were studied using high speed video recordings in Sri Lanka in the tropic. Five cloud flashes were selected for the study, which were recorded with 5000 fps with 512X512 pixel resolution. Luminosity variation along channels and along selected channel segment, duration of cloud activities was studied. It was found that the average duration of selected flashes is 266.44 ms. No particular pattern was observed for the luminosity variation along channel segments. However the luminosity variation across the channel followed a Gaussian distribution pattern. Pattern of the luminosity variation along channels were compared with existing models to understand the development process of cloud flashes. Results show that it is hard to collaborate the observation to a single process for cloud discharges.
dc.language.iso en en_US
dc.publisher IEEE en_US
dc.subject cloud flashes en_US
dc.subject luminosity variation en_US
dc.subject channel duration en_US
dc.subject lightning en_US
dc.title High speed optical observations of cloud flashes en_US
dc.type Article en_US


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