Karakteristik Anomali Magnetik dari Metode Reduksi ke Kutub dan Reduksi ke Ekuator pada Struktur Sesar

Aulia Huda Pinandita; Wahyu Sutresno

doi:10.61132/globe.v2i3.515

Authors

Aulia Huda Pinandita Universitas Bhayangkara Jakarta Raya
Wahyu Sutresno Universitas Bhayangkara Jakarta Raya

DOI:

https://doi.org/10.61132/globe.v2i3.515

Keywords:

Magnetic, Reduction to poles, Reduction to equator, Lembang fault

Abstract

Magnetic interpretation has its own challenges due to the bipolar nature of the Earth's magnetic field. So it is necessary to apply the reduction to poles and reduction to equator methods to make structure’s identification easier. In this research, magnetic data collection has been carried out in Lembang, West Java with the aim of validating the synthetic model anomaly results with field data to identify the position of the Lembang fault structure. By applying the pole reduction and equator reduction methods to magnetic anomaly field data, the structure of the Lembang Fault can be identified well and the anomaly character obtained from each method.

References

Adiltha, F., Muhardi, M., & Perdhana, R. (2024). Identifikasi struktur patahan di Kabupaten Pangandaran dan sekitarnya berdasarkan data anomali magnetik. Journal Online of Physics, 9(3), 8-17. https://doi.org/10.22437/jop.v9i3.34121

Arlin, M., Jahidin, & Ngkoimani, L. O. (2023). Identifikasi keterdapatan endapan emas menggunakan metode magnetik di daerah Wumbubangka Kecamatan Rarowatu Utara Kabupaten Bombana. Einstein’s: Research Journal of Applied Physics, 1(1), 22-33.

Baranov, V. (1957). A new method for interpretation of aeromagnetic maps, pseudo-gravimetric anomalies. Geophysics, 22, 359-363. http://dx.doi.org/10.1190/1.1438369

Bhattacharyya, B. K. (1965). Two-dimensional harmonic analysis as a tool for magnetic interpretation. Geophysics, 30(5), 829-857. https://doi.org/10.1190/1.1439658

Blakely, R. J. (1995). Potential theory in gravity and magnetic applications. Cambridge: Cambridge University Press.

Gerovska, D., Aráuzo-Bravo, M. J., & Stavrev, P. (2009). Estimating the magnetization direction of sources from southeast Bulgaria through correlation between reduced-to-the-pole and total magnitude anomalies. Geophysical Prospecting, 57(4), 491–505. https://doi.org/10.1111/j.1365-2478.2008.00761.x

Guo, L., Shi, L., & Meng, X. (2013). The antisymmetric factor method for magnetic reduction to the pole at low latitudes. Journal of Applied Geophysics, 92, 103-109. https://doi.org/10.1016/j.jappgeo.2013.02.018

Hao, M., Zhang, F., Tai, Z., Du, W., Ren, L., & Li, Y. (2018). Reduction to the pole at low latitudes by using the Taylor series iterative method. Journal of Applied Geophysics, 159, 127-134. https://doi.org/10.1016/j.jappgeo.2018.08.004

Junursyah, G. M. L., Rokhis, T. A., Praromadani, Z. S., & Sugiarto, B. (2023). Interpretation of lineament and shallow structure in Gunung Batu–Lembang area based on 2D resistivity method. Jurnal Lingkungan dan Bencana Geologi, 14(1), 33-47.

Refiani, S. A., Pohan, A. F., & Putra, A. (2023). Interpretasi sebaran anomali magnetik di daerah prospek panas bumi Sumani, Sumatera Barat. Jurnal Fisika Unand, 12(3), 388-394.

Rusman, M. N., Alawiyah, S., & Gunawan, I. (2023). Study on the significance of reduction to the equator (RTE), reduction to the pole (RTP), and pseudogravity in magnetic data interpretation. Jurnal Penelitian Pendidikan IPA, 9(8), 6197–6205. https://doi.org/10.29303/jppipa.v9i8.4705

Shi, L., Guo, L. H., Meng, X. H., & Wang, Y. F. (2012). The modified pseudo inclination method for magnetic reduction to the pole at low latitudes. Chinese Journal of Geophysics, 55(5), 1775-1783. https://doi.org/10.6038/j.issn.0001-5733.2012.05.035

Silitonga, P. H. (1973). Geologic map of the Bandung quadrangle, Jawa (scale 1:100,000). Geological Research and Development Centre, Bandung.

Silva, J. B. (1986). Reduction to the pole as an inverse problem and its application to low-latitude anomalies. Geophysics, 51(2), 369-382.

Zuo, B., Hu, X., Leão-Santos, M., Cai, Y., Kass, M. A., Wang, L., & Liu, S. (2021). Low-latitude reduction-to-the-pole and upward continuation between arbitrary surfaces based on the partial differential equation framework. Geophysical Journal International, 226(2), 968-983. https://doi.org/10.1093/gji/ggab067