Pemodelan Inversi Metode Gravitasi Menggunakan Simulated Annealing

Authors

  • Yusuf Umar Al Hakim Universitas Tanjungpura
  • Yudha Arman Universitas Tanjungpura
  • Zulfian Zulfian Universitas Tanjungpura

DOI:

https://doi.org/10.25077/jfu.12.2.261-267.2023

Keywords:

Metode Gravitasi, Metode Inversi, Simulated Annealing

Abstract

Metode gravitasi telah terbukti mampu menunjukkan jenis batuan dan mineral di bawah permukaan bumi dengan mengetahui perbedaan nilai densitasnya. Penentuan nilai densitas material ini perlu melibatkan proses inversi untuk mempersingkat waktu perhitungan. Metode inversi simulated annealing diterapkan pada data anomali gravitasi untuk menentukan jenis batuan, komponen posisi, dan struktur geologi bawah permukaan. Pada penelitian ini dibuat sebuah model sintetik berupa empat bola homogen. Ruang model berukuran 1000×1000 m dengan interval 200 m dan jumlah data 36. Parameter model yang digunakan yaitu posisi koordinat (x, y, z), jari-jari (r), dan densitas (Ï). Model sintetik yang digunakan ditambahkan noise sebesar 10% dengan sebaran seragam agar dapat dianggap sebagai data observasi. Hasil dari inversi ini diperoleh bahwa model inversi mendekati model sintetik yang diplot ke dalam peta kontur anomali gravitasi dan pencocokan kurva antara kurva anomali gravitasi observasi dan kurva anomali gravitasi inversi, serta dibuktikan juga dengan RMSE sebesar 0,0664.

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Published

2023-04-01

How to Cite

Hakim, Y. U. A., Arman, Y., & Zulfian, Z. (2023). Pemodelan Inversi Metode Gravitasi Menggunakan Simulated Annealing. Jurnal Fisika Unand, 12(2), 262–268. https://doi.org/10.25077/jfu.12.2.261-267.2023

Issue

Vol. 12 No. 2 (2023)

Section

Articles

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