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Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height

Positive cloud to ground (CG) flashes lowers positive charges from cloud to ground. Positive CG grasps more attention since they are highly allied with severe thunderstorms. Positive CG is known to account only approximately 10% out of all CG flashes. The positive CG can be compared with negative CG...

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Main Author: Thuraisamy, Yugeswari
Format: Thesis
Language:English
Published: 2018
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.utm.my/id/eprint/79090/1/YugeswariThuraisamyMFKE2018.pdf
http://eprints.utm.my/id/eprint/79090/
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spelling my.utm.790902018-09-27T06:07:32Z http://eprints.utm.my/id/eprint/79090/ Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height Thuraisamy, Yugeswari TK Electrical engineering. Electronics Nuclear engineering Positive cloud to ground (CG) flashes lowers positive charges from cloud to ground. Positive CG grasps more attention since they are highly allied with severe thunderstorms. Positive CG is known to account only approximately 10% out of all CG flashes. The positive CG can be compared with negative CG, IC (intra cloud) and NBE (narrow bipolar event) flashes. The experimental setup to capture the electric field produced by the lightning flashes has taken place at UTeM Melaka. The measurement setup consists of 2 parallel plates, buffer circuit, antenna, high speed camera, GPS, Picoscope digitizer, and computer. The NBE, preliminary breakdown pulses, and first return stroke are included in this process. From the recorded data, very few positive CG have been captured. This is because the occurrence of positive CG is very less in low latitude countries due to the absence or very less anvil shape of the clouds. It is found that the occurrence of positive CG is very less about which is approximately 1.275% by average in two days and the cloud top height is about 13km to 14 km during the occurrence of positive CG. 2018-01 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/79090/1/YugeswariThuraisamyMFKE2018.pdf Thuraisamy, Yugeswari (2018) Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height. Masters thesis, Universiti Teknologi Malaysia, Faculty of Electrical Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:109585
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Thuraisamy, Yugeswari
Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height
description Positive cloud to ground (CG) flashes lowers positive charges from cloud to ground. Positive CG grasps more attention since they are highly allied with severe thunderstorms. Positive CG is known to account only approximately 10% out of all CG flashes. The positive CG can be compared with negative CG, IC (intra cloud) and NBE (narrow bipolar event) flashes. The experimental setup to capture the electric field produced by the lightning flashes has taken place at UTeM Melaka. The measurement setup consists of 2 parallel plates, buffer circuit, antenna, high speed camera, GPS, Picoscope digitizer, and computer. The NBE, preliminary breakdown pulses, and first return stroke are included in this process. From the recorded data, very few positive CG have been captured. This is because the occurrence of positive CG is very less in low latitude countries due to the absence or very less anvil shape of the clouds. It is found that the occurrence of positive CG is very less about which is approximately 1.275% by average in two days and the cloud top height is about 13km to 14 km during the occurrence of positive CG.
format Thesis
author Thuraisamy, Yugeswari
author_facet Thuraisamy, Yugeswari
author_sort Thuraisamy, Yugeswari
title Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height
title_short Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height
title_full Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height
title_fullStr Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height
title_full_unstemmed Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height
title_sort characteristics of positive cloud to ground flashes in malaysia and correlation with cloud top height
publishDate 2018
url http://eprints.utm.my/id/eprint/79090/1/YugeswariThuraisamyMFKE2018.pdf
http://eprints.utm.my/id/eprint/79090/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:109585
_version_ 1643658095096758272
score 13.211869

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