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Journal : Science and Technology Indonesia

Probabilistic Earthquake Hazard Assessment in Indonesia Using Poisson Model and Spatial Grid Analysis Hartati; Effendie, Adhitya Ronnie; Susyanto, Nanang; Suryanto, Wiwit
Science and Technology Indonesia Vol. 11 No. 1 (2026): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2026.11.1.207-216

Abstract

Indonesia, located at the convergence of three major tectonic plates in the Pacific Ring of Fire (ROF), is highly susceptible to earthquakes. This study analyzes earthquake hazard in Indonesia using a statistical approach based on the Poisson distribution combined with spatial mapping through a 0.5o x 0.5o grid. Earthquake  data from the USGS catalog (1925–2025), including time, location, depth, and magnitude, were analyzed. Annual earthquake frequencies were calculated for each grid cell with magnitude ≥ 5.0, and the probability of at least one event occurring within 10, 25, and 50 years was estimated using the Poisson probability function. Results were visualized as spatial probability risk maps for 10-, 25-, and 50-year horizons, enabling the identification of earthquake-prone areas and classification of risk levels. The findings reveal that subduction zones, particularly along the Sunda Arc, exhibit probabilities exceeding 90% for M≥ 5 events within the next 50 years, highlighting their significance for disaster preparedness. These results demonstrate that a Poisson-based statistical and spatial approach is effective for probabilistic earthquake hazard mapping and provides direct support for disaster risk reduction and spatial planning in Indonesia.
Co-Authors A. Faridah Arsal Abd, Hady J Abd.Muis Abror, Indal Achmad Hilal Adhitya Ronnie Effendie, Adhitya Ronnie Adithiya Diar Adnan Abadi, Adnan Ahmad Muhlis Nuryadi Akhyar Alan Ali, Rustan Alimuddin, Nur Alpha Ariani, Alpha Amelia Luthfi Kamil Amiruddin Andi Mu'nisa Andi Najemi Andi Syafriansyah Andriyani Liberty, Iche Ansorullah Antonius Remigius Abi Ardianto Arizky Ramadhan Arizyanto, Romi Aryati Atifah, Azzah Aulia, Eli Awan Nurtjahyo Azharman, Zefri Beny Saputra Christie Novri Yanti Dedi Setiawan Delvi Destriana Destriani Dewi Kusumawati, Dewi Dimas Subekti Dini Meidiyanti Putri dorisnita, dorisnita Duprah, Nur Awaliah Ekasari, Silvia Eko Kurniawan Elsa Raihana Ely Triasih Rahayu Emilius Surya Eri Stiyanto Erwin Erwinda Fadhillah Fadilah, Umi Nur Fadli Fadli Fahruddin Faisal Fajar Harianto Farkhatus Solikhah Fatmala Fatonah Fauzan Fadlullah Fauziah Nuraini Kurdi, Fauziah Nuraini Febrian Chandra Firmansyah Putra Fitratul Insaniah Rusli Fitri Agung Nanda Fitri Handayani Fitriani Frayesi Gita Ananda, Syarifah Yasmin Hafrida Halifah Pagarra Halifah Pagarra Halmawati, Mita Hambali Harmaini Hasanah, Luzi Anjani Hasani, Ruslan Hasanuddin Hasbillah, Ahmad Ubaydi Hayati Lubis, Prima Helmi Henny Henry Januar Henry Januar, Henry Herri Yusfi Hiola, Siti Fatmah Idah Hamidah Ihsan Hilmi Ilyas, Muh. Intan Dea Pangesti Irfanuddin Irma Rubianti Irmayanti Sudirman Ismail Ismail, Nur Rejeki Najibah Istni Mutiara Wardhani Ainur Rofiq Hidayat, Bunga Iyakrus Jasmadi Jaya, Ningsih Jeti, La Julisah Izar Kamullah, Kamullah Karyati, Faridah KHOIRUL ANAM Khusnul Fajriyah Khusnul Fajriyah Krisna, Ratih Kurniawati, Naili Muna La Jeti Laganda, Berliani Laubo, Naharia Liliwarti Londa, Ratu M, Muh. Ilham M, Yulianto M. Claudio Pratama, claudio_pratama_28 Mahdi Bahar Marah Sutan Rangkuti Mardi Hartono Marlita, Sri Marsella, Uli Martadiansyah, Abarham Marwah Maryani Maryani Mas’anah Maulida Hirdianti Bandi Megawati Naibaho Meilati Suryani Meirizal Usra Meirizal Usra, Meirizal Mikawati Mirna Muh. Nasir Muhamad Ali Misri Muhammad Basri Muhammad Junda Muhammad Yusuf Zulkifli Muhiddin Palennari Mulia Rahman, Mulia Rahman Mulyati Muqimatussunnah, Luthfia Muslem Muthalib, Abdul Aziz Mutiara, Friscila Nadila Tri Agustin Nahdah Naibaho,, Yanti Vidarosa Nanda, Fitri Agung Nani Kurnia Nehru Nelly Herlina Nikman Azmin Nikman Azmin Noor Fazariah Handayani Noor, Fachrurozi Noviades, Dhil's Nur Asiah Nur Kholis nur, Muhammad Nur Nurhayati Nurhayati B Nuriyansyah, Melia Nurlaila Abdullah Mashabi, Nurlaila Abdullah Nurul Fahida Nurwany, Raissa Nurwasila, Nurwasila Nurzaswasila Oktavianus Sarno Oslan Jumadi PATIYUS AGUSTIANSYAH, PATIYUS Penyami, Yuniske Pranoto S Prasetiyo, Muhammad Ath Thaariq Pratiwi, Rizky Putra, Dinda Syufradian Putri Putri Mirani Putri, Ayu Cantika Putu Sudira Qurochman, Taufik Rachman Saleh Rachmawaty Rachmawaty Rachmawaty, Rachmawaty Ragil Setiawan Rahmatia, Sitti Rakhmani Ramadhan, Arizky Ramadhan, Etta hamid Ramndana, Ramndana Reza Muttaqin Ridwan, Metta Rania Rina Pebriana Riska Sabriana Risman, Kadar Rizani Amran Rizany, Selly Rizkia Dwi Oktadini Rizkina, Amalia Rosmidah Rumiyani Safrida Safrina Arifiani Felayati Sahribulan Sahribulan, Sahribulan Samsiar Samsul Azhar Saparuddin Shinta Septiantina Sia'tang , Weni Silvi Aryanti SILVI ARYANTI, SILVI Silvianengsih Siswo Pranoto Siti Misra Susanti Sri Nuriana St. Nurbayan Stevanny, Bella Sukarni Sulfiani Sulhastiiawati, Anita Sunaidi, Yanti Supriyo SURYANI Suryaningsih, Sherly Suryanto, Wiwit Susyanto, Nanang Sutica, Osia Suwandi N syafrizal Syamsuramel Syarif, Kurnia Rahma Syarifah Aini Syauki, Aqilah Syahrina Tanzila Tatiah Taufiq, Nuramaniyah Thaslifa, Thaslifa Thaslifah Tiara Mahardika Traindini, Aditya Anya Usman Usman, Fatimah Vilya Biring Pongbala W. P. B. Putra Wahyu Indra Bayu Wahyu Khafidah WAHYUNI Waji , Resi Agestia Wangge, Angelina Woi Yahya Eko Nopiyanto Yamin, Kurnia Fadillah Yasser Abd Djawad Yulianto Yusfi, Herri Zamli Zarkasi