NurulQomariyah (2011) Analisis Zona Potensi Panasbumi di Daerah Bittuang, Kabupaten Tana Toraja, Sulawesi Selatan Berdasarkan Anomali Magnetik-Pseudogravitasi. Sarjana thesis, Universitas Brawijaya.
Abstract
Penyelidikan anomali medan magnetik di daerah Bittuang, Kabupaten Tana Toraja, Sulawesi Selatan telah dilakukan selama 49 hari pada luas area (15x15) km2. Tujuan dari penelitian ialah untuk mengetahui penyebaran anomali magnetik residual, pemetaan daerah prospek panas bumi, dan identifikasi struktur geologi bawah permukaan. Data medan magnetik total diukur menggunakan peralatan Proton Precession Magnetometer (PPM). Pengolahan data dimulai dengan melakukan koreksi IGRF (International Geomagnetics Reference Field) dan koreksi variasi harian untuk mendapatkan anomali medan magnetik total di topografi. Anomali medan magnetik total di topografi direduksi ke bidang datar pada ketinggian 1400 meter di atas permukaan laut, kemudian dilakukan pemisahan anomali regional dan anomali lokal dengan melakukan kontinuasi ke atas. Anomali medan magnetik selanjutnya ditranformasi ke pseudogravitasi dan gradient horizontal untuk mengetahui daerah anomali dan diinterpretasi. Hasil interpretasi kualitatif menunjukkan bahwa variasi nilai medan residual dibagi menjadi anomali magnetik negatif dan positif. Daerah potensial panas bumi diinterpretasikan terdapat di daerah anomali magnet rendah atau negatif yang membentang dari arah barat laut ke tenggara dan selatan. Interpretasi kuantitatif Pada anomali residual dihasilkan struktur geologi bawah permukaan daerah penelitian berdasarkan nilai suseptibilitas.
English Abstract
The magnetic field anomaly study has been carried out in Bittuang area, Tana Toraja, South Sulawesi for 49 days with (15x15)km2 in wide. This study is conducted to understand the spread of magnetic field anomaly and the geothermal zone also under subsurface geology structure. The total magnetic field data was measured using Proton Precession Magnetometer (PPM). In this research, data processing is started with IGRF (International Geomagnetics Reference Field) correction and followed by diurnal variation correction to get the total magnetic field anomaly on topography. The total magnetic field anomaly on topography was reduced to a horizontal plane at elevation 1400 m above sea level, then separated into the regional and local anomaly by performing the upward continuation. Afterwards, Magnetic field anomaly was transformed to pseudogravitation and horizontal gradient to understand and interprete the area of anomaly. The result of qualitative interpretation show that the value of residual field variation was divide into negative magnetic anomaly and positive magnetic anomaly. Geotherm potential area was interpreted in low magnetic anomaly area or negative which is outstretched from the northwest to southeast and south area. Based on the rock susceptibility value, the quantitative interpretation obtained the subsurface geology structure.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2011/55/051100555 |
| Subjects: | 500 Natural sciences and mathematics > 530 Physics |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Fisika |
| Depositing User: | Unnamed user with email repository.ub@ub.ac.id |
| Date Deposited: | 23 Feb 2011 09:29 |
| Last Modified: | 22 Oct 2021 09:15 |
| URI: | http://repository.ub.ac.id/id/eprint/152883 |
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