Application of Magnetic Methods for Estimating Subsurface Rocks

Authors

  • Wenti Marlensi Maubana Universitas San Pedro

DOI:

https://doi.org/10.30736/seaj.v3i1.355

Keywords:

Magnetic anomaly, Proton precession magnetometer (PPM), north Pura, rock susceptibility.

Abstract

The magnetic method has been applied to the estimation of subsurface rocks in North Pura, Alor Nusa Tenggara Timur (NTT). The magnetic survey was performed using Proton Precession Magnetometer (PPM) type G-19T and measured on 54 magnetic stations. The magnetic data were processed by diurnal correction, IGRF correction, upward continuation, and 2D data modeling. The results showed that total magnetic intensity ranged from 50 nT to 770 nT. The regional anomaly contour map showed at the research area was dominated by the moderate anomaly. Estimation of subsurface profiles has been 2D forward modeling used regional anomaly of a contour map. The results showed that subsurface rocks in the research area. It's suspected was three types of rock in the research area as the volcanic sandstone, volcanic breccias, and basalt with a contrast susceptibility value of 0.0001 cgs unit, 0.0015 cgs unit, 0.0278 cgs unit, 0.0091 cgs unit, 0.0099 cgs unit, and 0.0134 cgs unit. The research study is expected to provide information for the local government especially in north Pura for in the existence of groundwater, depth and distribution of subsurface rocks.

Downloads

Download data is not yet available.

Author Biography

Wenti Marlensi Maubana, Universitas San Pedro

Universitas San Pedro

References

Anom Raharjo, S., & Wibowo, O. (2015). Pendugaan Model Sumber Anomali Magnetik Bawah Permukaan di Area Pertambangan Emas Rakyat Desa Paningkaban, Kecamatan Gumelar, Kabupaten Banyumas (Halaman 38 s.d. 42). Jurnal Fisika Indonesia, 18(53), 38–42. https://doi.org/10.22146/jfi.24386

Blakely, R. J. (1995). Potential Theory in Gravity and Magnetic Applications. In Program. https://doi.org/10.1017/CBO9780511549816

Broto, S. (2011). Aplikasi Metode Geomagnet Dalam Eksplorasi Panasbumi. Teknik, 32(1), 79–87. https://doi.org/10.14710/TEKNIK.V32I1.1687

Fanani, M. I. (2014). Interpretasi Struktur Bawah Permukaan Daerah Potensi Panas Bumi Berdasarkan Data Geomagnetik (Studi kasus di daerah sumber air panas Desa Lombang Kecamatan Batang-Batang Kabupaten Sumenep). Anomali magnet lokal, struktur Geologi, Air Panas.

Guo, T. R., Tong, L. T., & Huang, Y. T. (2018). Metamorphic geothermal reservoir characterisation—A case study in the Jinlun geothermal area, Taitung, Taiwan. Geothermics, 74(January), 35–44. https://doi.org/10.1016/j.geothermics.2018.02.002

Maryanto, S., Maubana, W. M., Nadhir, A., & Habsari, R. P. (2020). Geomagnetic and geochemical observations in Mt. Pandan volcano hosted geothermal area, East Java, Indonesia. AIP Conference Proceedings, 2228(April). https://doi.org/10.1063/5.0007281

Maubana, W. M., Maryanto, S., Utami, I. W., & Nadir, A. (2019). Reservoir magnetic anomaly at geothermal area of mount Pandan, East Java, Indonesia. International Journal of Renewable Energy Research, 9(2), 887–892.

Mawarni, L. W. (2018). Magnetic method used in geothermal reservoirs identification in Kasinan-Songgoriti, East Java, Indonesia. EESRJ, 87–93. https://doi.org/10.18280/eesrj.050402

NOAA. Magnetic Field Calculators. http://www.ngdc.noaa.gov/geomag-web/#grfwmm

Nurdin, N. H., Massinai, M. A., & Aswad, S. (2017). Identifikasi Pola Sebaran Intrusi Batuan Bawah Permukaan Menggunakan Metode Geomagnet Di Sungai Jenelata Kabupaten Gowa. Jurnal Geocelebes, 1(1), 17. https://doi.org/10.20956/geocelebes.v1i1.1776

Takaeb, Y., & Sutaji, H. I. (2018). Geomagnetik Pada Daerah Terakumulasinya Air Tanah Selatan. Jurnal Fisika Sains Dan Aplikasinya, 3(2), 2–7.

Tanesib, J. L., Tarigan, J., Sun, F., & Durto, F. K. A. (2017). Potensi Air Tanah di Pulau PURA , ALOR. 331–346.

PlumX Metrics

Published

2021-03-25

How to Cite

Maubana, W. M. (2021). Application of Magnetic Methods for Estimating Subsurface Rocks. Science Education and Application Journal, 3(1), 36–44. https://doi.org/10.30736/seaj.v3i1.355