Identifikasi Lapisan Bawah Permukaan Sekitar Sumur Air Garam di Desa Manis Raya dengan Metode Geolistrik Resistivitas
DOI:
https://doi.org/10.26418/pf.v13i1.77608Keywords:
Geolistrik, resistivitas, air asin, akuifer, sumur garamAbstract
Penelitian terkait penerapan metode geolistrik resistivitas untuk mengidentifikasi lapisan bawah permukaan sekitar sumur air garam telah dilakukan di Desa Manis Raya Kecamatan Sepauk Kabupaten Sintang. Penelitian ini menggunakan metode geolistrik resistivitas konfigurasi wenner-schlumberger dengan 3 lintasan yang memiliki panjang masing-masing 195 m. Hasil penelitian menunjukkan bahwa, lapisan bawah permukaan daerah penelitian terdiri dari 3 lapisan hingga 39,4 m. Lapisan pertama diidentifikasi sebagai lapisan gambut dengan nilai resistivitas 0,134 sampai dengan 0,766 Ωm. Lapisan kedua berupa lapisan lempung yang berada di bawah tanah gambut dengan nilai resistivitas 0,863 Ωm sampai dengan 2,18 Ωm. Lapisan ketiga berupa pasir berada di bawah lapisan lempung dengan nilai resistivitas 4,57 Ωm sampai dengan 38,7 Ωm. Lapisan pasir ini diduga sebagai lapisan akuifer yang menjadi wadah terakumulasinya air garam di lokasi penelitian yang berasal dari connate water dengan ketebalan mencapai 35 m.
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Date: 24-05-2023
Prisma Fisika
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