Identifikasi Zona Persebaran Nikel Laterit Blok “X” Menggunakan Metode Ground Penetrating Radar (GPR)

Putra, Savio Anugrah (2025) Identifikasi Zona Persebaran Nikel Laterit Blok “X” Menggunakan Metode Ground Penetrating Radar (GPR). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Indonesia merupakan salah satu negara dengan cadangan nikel laterit terbesar di dunia. Seiring meningkatnya permintaan global terhadap nikel, terutama dalam industri kendaraan listrik, kegiatan eksplorasi nikel menjadi semakin penting. Salah satu metode geofisika yang digunakan dalam tahap eksplorasi awal adalah Ground Penetrating Radar (GPR), yang memiliki keunggulan dalam resolusi tinggi untuk kedalaman dangkal. Penelitian ini menggunakan data GPR sebanyak 13 lintasan dengan panjang masing-masing ±2 km serta 37 data bor sebagai acuan validasi. Interpretasi radargram dilakukan untuk mengidentifikasi batas bawah lapisan limonite dan saprolite, yang kemudian divalidasi menggunakan metode Mean Absolute Percentage Error (MAPE). Hasil validasi menunjukkan nilai MAPE sebesar 17% untuk lapisan limonite dan 27% untuk lapisan saprolite, yang masing-masing tergolong dalam kategori good forecasting dan reasonable forecasting. Data interpretasi kemudian dipetakan untuk memperoleh peta persebaran ketebalan. Rata-rata ketebalan lapisan limonite dan saprolite masing-masing sebesar 10,7 meter dan 14,9 meter di sepanjang lokasi penelitian. ====================================================================================================================================
Indonesia is one of the countries with the largest lateritic nickel reserves in the world. With the increasing global demand for nickel, especially in the electric vehicle industry, lateritic nickel exploration has become increasingly important. One of the geophysical methods used in the early stages of exploration is Ground Penetrating Radar (GPR), which offers high-resolution imaging in shallow subsurface conditions. This study utilized GPR data from 13 survey lines, each approximately 2 km in length, and 37 borehole data points for validation purposes. Radargram interpretation was conducted to identify the bottom boundaries of the limonite and saprolite layers, which were then validated using the Mean Absolute Percentage Error (MAPE) method. The validation results showed MAPE values of 17% for the limonite bottom and 27% for the saprolite bottom, which are classified as good forecasting and reasonable forecasting, respectively. The interpreted data were further processed to generate thickness distribution maps. The average thicknesses of the limonite and saprolite layers were found to be 10.7 meters and 14.9 meters, respectively, across the study area.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	GPR, MAPE, Nikel Laterit,Limonit, Saprolit
Subjects:	Q Science > QC Physics > QC100.5 Measuring instruments (General) Q Science > QE Geology > QE33.2.R33 Ground penetrating radar Q Science > QE Geology > QE571 Sedimentation and deposition. Sediment transport. Erosion. Q Science > QE Geology > QE601 Geology, Structural T Technology > T Technology (General) > T57.5 Data Processing
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geophysics Engineering > 33201-(S1) Undergraduate Thesis
Depositing User:	Savio Anugrah Putra
Date Deposited:	24 Jul 2025 07:29
Last Modified:	24 Jul 2025 07:29
URI:	http://repository.its.ac.id/id/eprint/120318

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