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Sumatera bagian utara mempunyai daerah potensi rawan petir karena daerah ini mempunyai topografi yang memungkinkan tumbuhnya awan-awan konvektif di sekitar lereng pegunungan arah timur seperti kota Medan. Bencana petir dapat berupa serangan petir yang mengganggu transmisi listrik tegangan tinggi, dan dapat merenggut nyawa bagi yang terkena serangan langsung. Begitu besar bahaya yang ditimbulkan akibat adanya sambaran petir ini, sehingga masyarakat perlu waspada dan hati-hati pada saat terjadi hujan disertai petir, apalagi bagi masyarakat yang tinggal berada di bawah atau di sekitar menara BTS (base tranceiver station). Hal ini dikarenakan secara umum petir akan dominan menyambar bagian-bagian di permukaan bumi yang memiliki struktur tinggi (gedung-gedung tinggi, tower BTS, menara transmisi tegangan tinggi) dan dominan memilih struktur yang terbuat dari material konduktif seperti metal. Adanya analisis pemetaan sambaran petir akibat bangunan BTS terhadap lingkungan dan sekitarnya di kota Medan dapat membantu semua pihak dalam meminimalisir resiko bencana yang diakibatkan oleh sambaran petir. Berdasarkan hasil overlay peta klasifikasi intensitas sambaran petir menunjukkan intensitas petir tinggi terdapat pada kecamatan yang banyak terdapat bangunan BTS. Northern Sumatra has a lightning-prone areas because it has topography that allows the growth of convective clouds around the mountain slopes direct to the east, such as Medan. Lightning disasters can manifest as lightning attack which with interfere the high voltage electricity transmission, and can be fatal whoever who comes into direct contact with it. The danger caused by a lightning strike is so great, so that the community has to be extra needs to be vigilant and cautious at the time of rain accompanied by lightning, especially for those living under or around the base tranceiver station (BTS). This is because lightning generally prefer to strike parts of the earth that has high structures, such as tall buildings, tower base stations, high voltage transmission towers and are more attracted to structures that made of conductive material like  metal. With the existence of the mapping analysis of lightning strike because of BTS Building towards the environment and its surrounding in Medan can help all parties in minimalize the risk of disaster caused by lightning strikes. Based on the intensity classification map overlay, it is shown that the intensity of a lightning attack high in the area that has many BTS buildings.

ANALISIS PEMETAAN SAMBARAN PETIR AKIBAT BANGUNAN BTS TERHADAP LINGKUNGAN DAN SEKITARNYA DI KOTA MEDAN