Identifikasi Struktur Bawah Permukaan Menggunakan Data Anomali Magnetik Lembar Kupang

Authors

  • Yusta Tea As Putri Universitas Tanjungpura
  • Yudha Arman Universitas Tanjungpura
  • Zulfian Zulfian Universitas Tanjungpura

DOI:

https://doi.org/10.26418/pf.v10i2.55571

Abstract

Telah dilakukan identifikasi struktur bawah permukaan menggunakan data anomali magnetik pada daerah Kupang, Nusa Tenggara Timur dengan koordinat 10 °7"™6,3" -   10 °23"™9,2" LS dan 123 °30"™0,8" "“ 123 °48"™2,9" BT. Data yang digunakan dalam penelitian merupakan data sekunder yang diperoleh dari Pusat Survei Geologi (PSG) Bandung. Data magnetik diolah menggunakan transformasi reduksi ke kutub, transformasi kontinuasi ke atas kemudian dilakukan pemodelan 3D yang bertujuan untuk mengetahui struktur bawah permukaan. Model 3D suseptibilitas daerah penelitian memiliki nilai suseptibilitas antara -0,0051 hingga 0,0068 SI. Berdasarkan hasil penampang 2D dari model 3D pada tiga sayatan disusun oleh batu gamping, batu lempung, dan batu pasir, batu serpih. Pada setiap penampang diduga terdapat mineral yang bersifat non-magnetik yaitu mineral kuarsa dan mineral kalsit.

Kata Kunci : Metode magnetik, reduksi ke kutub, kontinuasi ke atas, Pemodelan 3D, Kupang

Author Biographies

Yusta Tea As Putri, Universitas Tanjungpura

Program Studi Geofisika

Yudha Arman, Universitas Tanjungpura

Program Studi Geofisika

Zulfian Zulfian, Universitas Tanjungpura

Program Studi Geofisika

References

Telford, W.N.; Geldart, L.P. dan Sheriff, R.E., 1990, Aplied Geophysics, Second Edition. Cambridge University Press, Cambridge, London, New York, Melboure

Santosa, B. J., Mashuri, Sutrisno, W. T., Wafi, A., Salim, R. dan Armi, R., 2012, Interpretasi Metode Magnetik Untuk Penentuan Struktur Bawah Permukaan Di Sekitar Gunung Kelud Kabupaten Kediri, Jurnal Penelitian Fisika dan Aplikasinya (JPFA), 2(1):7-14.

Perdana, A.W., 2011, Metode Controlled Source Audio Frequency Magnetotelluric (CSMAT) Untuk Ekplorasi Mineral Emas Daerah “A†dengan Data Pendukung Metode Magnatik dan Geolistrik, Universitas Indonesia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Depok (Skripsi).

Marzuki dan Hayat, D.Z., 1990, Peta Anomali Magnet Pendahuluan Lembar Kupang, Timor, Skala 1:250.000, Pusat Penelitian dan Pengembangan Geologi, Bandung.

Blakely, R.J., 1996, Potential Theory in Gravity and Magnetic Applications. Cambridge Univ Press, New York

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Published

2022-08-31

Issue

Vol. 10 No. 2 (2022)

Section

Articles

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Date: 24-05-2023

Prisma Fisika
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