Abstrak

Baca Juga : KAITAN JUMLAH SAMBARAN PETIR DAN CURAH HUJAN DI PROVINSI ACEH (ISMI KHAIRATIH, 2015) ,

Baca Juga : ¬IDENTIFIKASI POTENSI DAN PEMETAAN RESIKO SAMBARAN PETIR JENIS CLOUD TO GROUND DI WILAYAH ACEH PERIODE 2018-2019 (SITI NUR JANNAH, 2020) ,

ukul 4.00 pm-5.00 pm dengan jumlah sambaran cg yaitu sebanyak 543 kali sambaran, 398 kali sambaran cg- dan 145 kali sambaran cg+. sedangkan jumlah sambaran terendah tejadi pada pukul 12.00 pm-01.00 pm dengan sambaran cg yaitu 112 sambaran, sambaran cg- yaitu 81 sambaran dan sambaran cg+ yaitu 31 sambaran. hubungan aktifitas sambaran cg dan curah hujan terjadi peningkatan sambaran cg pada bulan april dengan sambaran cg sebanyak 1641 sambaran, namun curah hujan rendah pada bulan juli sebesar 57 mm. jumlah sambaran petir cg pada bulan januari dan mei mengalami peningkatan, sedangkan jumlah curah hujan masih di bawah sambaran petir cg. sedangkan pada bulan juni, agustus sampai desember terdapat jumlah curah hujan yang selaras dengan sambaran petir. hal ini menandakan bahwa sambaran petir tidak selalu berhubungan dengan curah hujan. tingkat ancaman sambaran petir di kecamatan dewantara termasuk potensi ancaman yang tinggi. hasil ini diperoleh dari peta kerapatan sambaran cg selama tahun 2017 dan peta radial di kecamatan dewantara. kemungkinan akan terjadi sambaran tinggi lagi karena wilayah ini terletak di pinggir laut. kata kunci : petir, curah hujan, boltek lightening system. abstract lightning is one of the electrical jump events that occur in the atmosphere due to the activity of cumulonimbus clouds (cb) of different charges. lightning is very dangerous and can cause damage. therefore, this study needs to be conducted to determine the relationship of rainfall to lightning cloud to ground (cg) in dewantara sub-district, north aceh district, aceh province. this study was conducted to identify the number of patterns and potential threats of lightning strikes that occurred on october 7, 2017. lightning data was obtained from ie geophysical station banda aceh and is a recapitulation of the number of lightning strikes for a year, the period january-december 2017. by using lightning detector instrument coupled with boltek lightening system, performed data processing to obtain the highest and lowest lightning strikes in a given month based on the time of the strike that occurred. based on the periodic system, the number of lightning strikes most occur at 4:00 pm-5.00 pm with the number of cg strokes that is as much as 543 times the strike, 398 times the cg-strike and 145 times cg + strike. while the lowest number of strikes occurred at 12.00 pm-01.00 pm with a cg strike of 112 strikes, cg strikes are 81 strikes and cg + stroke is 31 strikes. the relation of cg strike activity and rainfall increased cg strike in april with 1641 cg strikes, but low rainfall in july was 57 mm. the number of cg lightning bolts in january and may has increased, while the amount of rainfall is still under cg lightning strikes. while in june, august to december there is the amount of rain that is in harmony with lightning strikes. this indicates that lightning strikes are not always associated with rainfall. the level of threat of lightning strikes in dewantara sub-district is classified as a high potential threat. this result is obtained from the map of cg splice density during 2017 and the radial map in dewantara. it is likely that there will be a high strike because the region is located on the seafront. keywords: lightning, rainfall, boltek lightening

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