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All Journal Teknosains: Media Informasi Sains dan Teknologi Jurnal Fisika Unand PROtek : Jurnal Ilmiah Teknik Elektro JPSE (Journal of Physical Science and Engineering) Jurnal Geocelebes Jurnal Penelitian Pendidikan IPA (JPPIPA) Neutrino Jambura Geoscience Review Jambura Physics Journal Jurnal Fisika : Fisika Sains dan Aplikasinya Indonesian Physical Review Jurnal Fisika dan Terapannya Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Ilmiah Wahana Pendidikan Journal Of Khairun Community Services Newton-Maxwell Journal of Physics Eastasouth Journal of Effective Community Services Jurnal Geosains West Science Geosains Kutai Basin Jurnal Pengabdian Rekayasa Sistem West Science Nature and Technology Faraday: Journal of Fundamental Physics, Research, and Applied Science Jurnal Pengabdian Indonesia
Harsano Jayadi
Program Studi Teknik Geofisika, Universitas Tadulako, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Other

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Seismicity Analysis of Earthquake in Bengkulu Using Gutenberg-Richter and Omori laws Tobamba, Fiska; Meidji, Icha Untari; Jayadi, Harsano
Faraday: Journal of Fundamental Physics, Research, and Applied Science Vol. 2 No. 1 (2026): Faraday: Journal of Fundamental Physics, Research, and Applied Science
Publisher : Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

Bengkulu Province is one of the regions in Indonesia with high seismic aktivity because it lies within the Sumatra tectonic plate zone and is crossed by the Sumatra Fault system. This tectonic setting makes Bengkulu highly vulnerable to Earthquake. This study analyzes the seismic characteristics of Bengkulu Using the Gutenberg-Richter law and examines the aftershock pattern following the major earthquake of june 4, 2000, based on the Omori-Utsu law. The data were obtained from the USGS earthquake catalog, consisting of earthquake records from 2015-2025 and afthershock data for 30 days after the mainshock. The Gutenberg-Richter Analysis evaluates the relationship between log10N and moment magnitude (Mw) to determine the a and b values. Meanwhile, Omori-Utsu Analysis examines the relationship between log10 n(t) and log10 (t+c) to obtain the parameters p and k. The result show that Bengkulu's seismicity is dominated by small to moderate earthquakes with relatively low b-values, indicating high tectonic stress conditions. The aftershock Analysis produced a p-value of 1.4822 with an R² value of 0.7767, showing rapid aftershock decay consistent with the Omori-Utsu law. These findings confirm Bengkulu has a high seismic Hazard level, emphasizing the need for continuous mitigation and preparedness efforts.
Co-Authors Abdul Mukaddas Abdul Mukaddas Abdullah Ahmadi, Haerul Akuba, Kisman R Al Imran, Hamzah Andi Indra Wulan Sari Ramadani Andi Rusdin Andi Rusdin Anita Lestari Asdani Soehaimi, Asdani Ayu Sari Wahyuni Ayusari Wahyuni Ayusari Wahyuni Basyri Yadi Tang Bergita Gela M Saka Botjing, Muslimin U Dewa Gede Eka Setiawan Dwa Desa Warnana Dzakiya, Nurul Efendi, Hasan Arif Hamzah Al Imran Hidayat, Irna I Made Hermanto Imran, Syahdan Ali Irianto Uno Irsan Irsan Rahman Jatnika, Jajat Judijanto, Loso Jumiyatun, Jumiyatun Kartika Kurniawati, Lucky Anggi Loso Judijanto Lucky Anggi Kurniawati Meidji, Icha Untari Meilan Demulawa Moh Dahlan Th Musa Moh Idham Sesenggi Mohamad, Wahyu Mu’zizat Muh. Abduh Muh. Ihsan Said Ahmad Muhammad Agsti Buana Aditya Muhammad Fawzy Ismullah Massinai Muhammad Yunus Ni Luh Sri Suryaningsih Ni Luh Sri Suryaningsih, Ni Luh Sri Ninasafitri, Ninasafitri Paputungan, Devi Triana Rachman, Gazali Rahmaniah Rahmaniah Ramdhan, Mohamad Reskywijaya Reskywijaya Samatowa, Lukman Sesenggi, Moh Idham Sismanto Sismanto Sufrina Keumala Ayu Syamsu Rijal Tang, Basyri Yadi Tobamba, Fiska Widi Atmoko Widi Atmoko Widi Atmoko Windi Lestari Yusniati H. Muh. Yusuf Yutdam Mudin