Analisa Data Medan Listrik dan Durasi Badai Petir Hingga Sambaran Petir Jenis Cloud to Ground Negative

Dian, Anggaryni (2017) Analisa Data Medan Listrik dan Durasi Badai Petir Hingga Sambaran Petir Jenis Cloud to Ground Negative. Diploma thesis, Universitas Andalas.

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Abstract

This research was done toward an electromagnetic wave in the atmosphere and duration of thunderstorm up to its first strike. This research was meant to understand the characteristic of electromagnetic wave changes in the atmosphere by examining the duration of the thunderstorm on the first lightning strike as well as the duration of lightning storm occurrence, and the average of electromagnetic. The electromagnetic data that was being used in this research was from Electric Field Mill recorded by Electric Fill Mill sensor from January to August 2016. In the same region, Cloud to Ground Negative Non Zero Croosing type of lightning was used in January to August 2016. The analysis of the first lightning strike of thunderstorm by examining on the polarity of electromagnetic wave and also resulting a thunderstorm to its first lightning strike. The longest duration of a lightning strike was occured on March, 4th 2016 with 258 minutes long and the shortest one was occured on April, 1st 2016 by 16 minutes long. The longest duration of thunderstorm was on April, 4th 2016 with 504 minutes long and the fastest one was on February, 29th 2016 with 120 minutes long. The average duration of thunderstorm up to its first lightning strike was in March 2016 in amount of 125,25 minutes, the fastest was in January 2016 in amount of 105,8 minutes. The longest duration lightning storm was occured in April 2016 and the most frequent lightning strike was happened in April 2016 as well. The needed time parameter from the early thunderstorm up until its first lightning strike is required to complete the data of electromagnetic wave in atmosphere as a reference for a lightning warning system.

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