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All Journal Indonesian Physical Review Bima Abdi: Jurnal Pengabdian Masyarakat
Kelibulin, Josephus Ronny
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Education Languange, Linguistic, Communication & Media Physics Other

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NUMERICAL SIMULATION OF Mw 8.3 SOUTH BURU FAULT TSUNAMIS WITH 3D SLIP EVOLUTION IN AMBON Kelibulin, Josephus Ronny; Latumeten, Grimaldy Rooy; Elake, Alexander Yosep; Lebang, Annamaintin Kobong
Indonesian Physical Review Vol. 8 No. 3 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i3.541

Abstract

This study investigates the tsunami hazard potential induced by the activity of the South Buru Thrust Fault on the coastal areas of Ambon City through two-dimensional (2D) numerical modelling using the COMCOT v1.7 software, while incorporating three-dimensional (3D) slip evolution from the fault scenario. The earthquake scenario was set at Mw 8.3 based on fault length, width, and slip potential estimates, representing an extreme seismic event in the region. By integrating 3D slip evolution into the 2D tsunami model, the approach accounts for spatial variations in vertical displacement along the fault plane, directly influencing tsunami generation and propagation. The simulation results show significant spatial variations in tsunami run-up heights and inundation zones, with maximum run-up recorded at Kapahaha (13.08 m, arrival time ~832 s) and Slamet Riyadi Port (12.02 m, arrival time ~786 s). In comparison, minimum values occurred in Ambon's northern and northeastern parts (<1 m). The affected area and inundation distance from the shoreline also vary, e.g., Kapahaha (12,813 m², 159 m) and Slamet Riyadi Port (414,158 m², 1,213 m). Areas experiencing the highest tsunami inundation are Latuhalat (>5 m), followed by Galala–Wayame–Laha (3–5 m) and Paso–Rumah Tiga–Hative Kecil (2–4 m). The distribution of tsunami waves is influenced by coastal morphology, wave direction, and the presence of bays and capes, which can either amplify or block waves. Further analysis highlights the effects of seafloor topography, coastal morphology, and wave propagation pathways on run-up heights and arrival times. These findings underscore the importance of considering multi-segment rupture models, 3D deformation, and coastal morphology in tsunami hazard assessments and contribute to more realistic, source-specific mitigation strategies in tectonically complex regions such as Ambon.
Efektivitas Sosialisasi Mitigasi Bencana Gempa Bumi dan Tsunami di Wilayah Pesisir Latuhalat Kota Ambon Kelibulin, Josephus Ronny; Nanlohy, Pieldrie; Lebang, Annamaintin Kobong; Manuhutu, Ledy; Latumeten, Grimaldy Rooy
Bima Abdi: Jurnal Pengabdian Masyarakat Vol. 5 No. 3 (2025): Bima Abdi: Jurnal Pengabdian Masyarakat
Publisher : Yayasan Pendidikan Bima Berilmu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53299/bajpm.v5i3.2404

Abstract

Kegiatan pengabdian masyarakat ini bertujuan meningkatkan pengetahuan dan kesiapsiagaan warga pesisir Negeri Latuhalat, Kota Ambon, terhadap potensi gempa bumi dan tsunami. Metode pelaksanaan mencakup sosialisasi edukatif berbasis visual menggunakan video simulasi 3D, brosur, spanduk lokal, serta pre-test dan post-test. Masyarakat diperkenalkan pada potensi tsunami lokal akibat aktivitas sesar bawah laut, serta pentingnya evakuasi cepat melalui jalur aman yang telah dipetakan. Hasil evaluasi menunjukkan peningkatan pemahaman signifikan dari skor rata-rata 40,8% (pre-test) menjadi 86,1% (post-test), mencakup aspek pengetahuan dan sikap (K), rencana tanggap darurat (EP), peringatan dini (WS), dan mobilisasi sumber daya (RMC). Media edukatif yang dikembangkan terbukti efektif memperkuat pesan mitigasi dan menjangkau lebih banyak warga. Partisipasi aktif masyarakat menunjukkan antusiasme tinggi terhadap edukasi kebencanaan. Luaran kegiatan meliputi video edukatif, brosur, banner, peta rendaman tsunami hasil pemodelan numerik, serta peta evakuasi lokal yang dapat digunakan dalam program kesiapsiagaan lanjutan dan pelatihan kebencanaan di sekolah maupun masyarakat umum.
Co-Authors Elake, Alexander Yosep Latumeten, Grimaldy Rooy Lebang, Annamaintin Kobong Manuhutu, Ledy Pieldrie Nanlohy