CG (Cloud-To-Ground) Lightning Strike Distribution Patterns In Bandar Lampung and South Lampung in 2022

Physics Education, Universitas Islam Negeri Raden Intan Lampung, Lampung, Indonesia

^* Corresponding author: wellyanggraini@radenintan.ac.id

Abstract

This study aims to identify patterns in the distribution of CG-type lightning strikes in the regions of Bandar Lampung and South Lampung during the year 2022. This study employs quantitative descriptive research methods. The data for this study was collected from the BMKG office of North Lampung Class III Geophysical Station, located in Lampung Province. The data includes latitude, longitude, and CG-type lightning data for 2022. The sensor was positioned at coordinates 4.83° S latitude and 104.87° E longitude, with an elevation of 60 meters. It utilized the Boltek Lightning Detection System for lightning detection. The analysis indicated that the patterns of CG-type lightning strikes in Lampung Province in 2022 varied every month. This variation can be attributed to the specific topographic conditions of different areas. The Bandar Lampung and South Lampung areas experienced a significant number of lightning strikes in the year 2022. In Bandar Lampung, there were 28,502 lightning strikes, including CG+ and CG- lightning. Meanwhile, the South Lampung area recorded more lightning strikes, totaling 191,353 occurrences. The high frequency of lightning strikes in the South Lampung region can be attributed to its topography, close to Panjang and Bakauheni Harbors. These areas have many coastal regions that contribute to cloud formation, thereby increasing the likelihood of lightning. Cumulonimbus clouds are formed through the evaporation of water from sources, such as the sea, lakes, or rivers, in line with the established theory of cloud formation. Additional research is required to analyze weather data about parameters that specifically impact the frequency of lightning strikes in different regions.