Browsing by Author "Gaol, Yosua Hotmaruli Lumban"

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  • Comparison of 3-D Raytracing and Finite Frequency Tomography 

    Suhardja, Sandy K.; Gaol, Yosua Hotmaruli Lumban; Abdullah, Agus; Nugraha, Andri Dian; Zulfakriza, Z. (Jurnal Geofisika, Himpunan Ahli Geofisika Indonesia, 2019-09-03)
    We performed 3-D seismic tomography using teleseismic arrival time at Southwest Mexico. The Mexican subduction zone results from successive fragmentation events that affected the ancient Farallon plate as various segments ...

  • OTOMATISASI PEMILIHAN WAKTU TIBA GELOMBANG-P GEMPA MENGGUNAKAN MACHINE LEARNING 

    Gaol, Yosua Hotmaruli Lumban (Yosua Hotmaruli Lumban Gaol, 2020-07-14)
    Akurasi pemilihan waktu tiba gelombang (first break picking) pada gempa sangat penting dalam proses pengolahan data seismik. Pada umumnya pemilihan waktu tiba gelombang dilakukan secara manual atau menggunakan algoritma ...

  • OTOMATISASI PEMILIHAN WAKTU TIBA GELOMBANG-P GEMPA MENGGUNAKAN MACHINE LEARNING 

    Gaol, Yosua Hotmaruli Lumban (Yosua Hotmaruli Lumban Gaol, 2020-07-14)
    The accuracy of earthquake wave first-break picking is important in seismic data processing. The first-break process is usually picked manually by visual inspection with or without STA/LTA algorithm. The principle of STA/LTA ...

  • PENGOLAHAN DATA SURVEI GAYABERAT AREA SANGATTA, KALIMANTAN TIMUR 

    Gaol, Yosua Hotmaruli Lumban (2019-08-16)
    Gayaberat merupakan salah satu metode geofisika yang didasarkan pada pengukuran variasi medan gravitasi bumi. Peta Anomali Bouger Lengkap daerah survei merupakan peta distribusi anomaly gayaberat daerah Sangatta, Kalimantan ...