IDENTIFIKASI STRUKTUR BAWAH PERMUKAAN TANAH MENGGUNAKAN METODE GEOLISTRIK DAN CITRA SENTINEL-1 DI PANTAI SITIRIS-TIRIS KABUPATEN TAPANULI TENGAH

Barus, Junisa Perbina (2021) IDENTIFIKASI STRUKTUR BAWAH PERMUKAAN TANAH MENGGUNAKAN METODE GEOLISTRIK DAN CITRA SENTINEL-1 DI PANTAI SITIRIS-TIRIS KABUPATEN TAPANULI TENGAH. Undergraduate thesis, UNIMED.

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Abstract

Penelitian ini bertujuan untuk mengetahui perbedaan metode Geolistrik dengan citra sentinel-1 dalam mengidentifikasi struktur bawah permukaan tanah di daerah Pantai Sitiris-Tiris Kabupaten Tapanuli Tengah. Berdasarkan analisa nilai resistivitasnya penelitian ini menggunakan metode Geolistrik Konfigurasi Schlumberger dengan 16 elektroda berjumlah dua lintasan dengan panjang masing- masing lintasan 75 meter menggunakan alat Ares-G4 v 4.7 (Automatic Resistivity System). Data yang diperoleh menggunakan alat Geolistrik berupa nilai resistivitas semu, kemudian diubah menjadi nilai resistivitas, data yang diperoleh dibuat menjadi gambar model penampang dua dimensi dengan menggunkan software Res2Dinv untuk menampilkan penampang kontur nilai resistivitas perlapisan batuan. Hasil penelitian Geolistrik menunjukkan bahwa daerah pesisir pantai Sitiris-Tiris memiliki nilai resistivitas 2,00 Ωm – 2,14 Ωm pada lintasan pertama dan 1,69 Ωm – 2,77 Ωm pada lintasan kedua. Berdasarkan dari nilai resistivitas yang diperoleh daerah tersebut mengandung Alluvium Muda yang terdiri dari tanah lempung, lanau dan pasir pada kedalaman 1,25 – 9,26 meter. Interpretasi litologi berdasarkan citra Sentinel-1 didapatkan satu macam satuan litologi di daerah penelitian yaitu Alluvium Muda dan terdapat tuffa toba disekitarnya pada kedalaman 0-10 meter. Alluvium muda merupakan endapan permukaan muda yang terdiri atas lempung, lanau kerikil dan pasir.

Item Type: Thesis (Undergraduate)
Contributors:
ContributionNameNIDN/NIDK
Thesis advisorTampubolon, Togi196105011987031003
Call Number: SK-2021 FIS 124
Keywords: Geolistrik; Shlumberger; Citra sentinel-1; Litologi; Tanah; Batuan; Penginderaan jauh
Subjects: Q Science > QC Physics
Q Science > QC Physics > QC801 Geophysics. Cosmic physics
Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam > Fisika
Depositing User: Mrs Harly Christy Siagian
Date Deposited: 13 Dec 2021 07:02
URI: http://digilib.unimed.ac.id/id/eprint/44045

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