Identifikasi Struktur Tanah Bawah Permukaan dan Kedalaman Akuifer Daerah Tempat Pemrosesan Akhir (TPA) Manggar Menggunakan Metode Resistivitas Konfigurasi Schlumberger

Abstract

Water for daily is big problem for people living around of Manggar Final Processing Place (TPA) - Balikpapan. This study aims to identify the depth of aquifer and subsurface structures around the Manggar TPA area using the geo-electric resistivity method configuration schlum- berger. The data obtained in the acquisition process is used to calculate the apparent resistivity value at each measurement point and analyzed quantitatively and qualitatively. Then proceed with the inversion process using IP2 Win program so that obtained resistivity value and layer thickness at each point of measurement. The result of measurement showed that subsurface structures at each point of measurement have a similarity, at the top layer is a top soil layer with the impermeable layer. Next layer is a layer of clay layer that a permeable layer, the last is a sandstone layer that has a function as a layer of ground water aquifers. The depth of groundwater aquifers from the subsurface at each point of measurement varies with a shallow aquifer at the second measurement point 1,15 – 7,68 meter and the deepest aquifers at the third measurement point 41,2–61,7 meter. The range of aquifer resistivity values at each measurement point varies from 7,33 Ωm –27,4 Ωm. Abstrak