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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my-utm-ep.790902018-09-27T06:07:32Z Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height 2018-01 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 http://eprints.utm.my/id/eprint/79090/ http://eprints.utm.my/id/eprint/79090/1/YugeswariThuraisamyMFKE2018.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:109585 masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering |
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Universiti Teknologi Malaysia |
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UTM Institutional Repository |
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English |
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TK Electrical engineering Electronics Nuclear engineering |
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TK Electrical engineering Electronics Nuclear engineering Thuraisamy, Yugeswari Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height |
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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 |
qualification_level |
Master's degree |
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 |
granting_institution |
Universiti Teknologi Malaysia, Faculty of Electrical Engineering |
granting_department |
Faculty of Electrical Engineering |
publishDate |
2018 |
url |
http://eprints.utm.my/id/eprint/79090/1/YugeswariThuraisamyMFKE2018.pdf |
_version_ |
1747818144341164032 |