High speed optical observations of cloud flashes

SPA Vayanganie; Mahendra Fernando; Sonnadara, D.U.J.; DC Perera; Vernon Cooray

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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