IDENTIFIKASI STRUKTUR BAWAH PERMUKAAN SEKITAR DAERAH JEMBATAN KUNING DI DESA KOREK MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI WENNER-SCHLUMBERGER
DOI:
https://doi.org/10.26418/pf.v8i1.40213Abstract
Identifikasi struktur bawah permukaan sekitar daerah Jembatan Kuning di Desa Korek telah dilakukan menggunakan metode geolistrik konfigurasi Wenner-Schlumberger. Lintasan yang digunakan pada penelitian ini berjumlah 4 buah dengan panjang masing "“ masing sebesar 156 m. Lintasan 1 dan 2 berada di sebelah Barat Laut jembatan sedangkan lintasan 3 dan 4 terletak di sebelah Tenggara jembatan. Berdasarkan interpretasi, pada lintasan 1 dan 2 terdiri dari tanah keras, gambut, lempungan pasir dan pasir berair sedangkan pada lintasan 3 dan 4 terdiri dari aluvial, lempungan pasir, dan pasir berair. Tanah keras memiliki nilai resistivitas rentang 139,8 Ωm "“ 719,5 Ωm, gambut dan lempungan pasir memiliki nilai resistivitas yang sama yaitu rentang 55,1 Ωm "“ 99,6 Ωm, nilai resistivitas aluvial rentang 144 Ωm "“ 290 Ωm, dan pasir berair memiliki nilai resistivitas 5,57 Ωm "“ 42,8 Ωm. Berdasarkan sifat dan karakteristik batuan yang dapat dijadikan sebagai lapisan keras berada pada lapisan lempungan pasir dan pasir berair. Lapisan ini diperkirakan berada pada di kedalaman dari 10 m sampai 31,5 m.
Kata Kunci: struktur bawah permukaan, geolistrik, resistivitas, wenner"“schlumberger.
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Date: 24-05-2023
Prisma Fisika
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