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All Journal Natural B JPSE (Journal of Physical Science and Engineering) Jurnal Penelitian Pendidikan IPA (JPPIPA) INDONESIAN JOURNAL OF APPLIED PHYSICS AMPLITUDO: Journal of Science & Technology Innovation
Adi Susilo
Brawijaya University
Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Energy Environmental Science Materials Science & Nanotechnology Physics

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A Hybrid Ensemble Framework for Probabilistic Earthquake Forecasting in Northern California in Support of SDG 11: Sustainable and Resilient Cities Madlazim Madlazim; Baba Musta; Aris Doyan; Adi Susilo; Khaista Rehman
AMPLITUDO : Journal of Science and Technology Innovation Vol. 5 No. 1 (2026): February
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/amplitudo.v5i1.496

Abstract

Forecasting earthquakes is still one of the most difficult problems in geophysics, mainly because seismic activity is irregular and often influenced by many factors that interact in complex ways. In this study, we develop a leakage-controlled hybrid ensemble model that combines CatBoost, LightGBM, XGBoost, and Gradient Boosting to predict five earthquake parameters: magnitude, depth, latitude, longitude, and a scaled inter-event interval in Northern California. These models were trained using USGS earthquake data ranging from 1900 to 2025 (M ≥ 4.0), with a process designed to prevent time leakage through strict time separation, a moving window feature, and prospective validation. Overall, the hybrid models produced consistently low MAE and RMSE values ​​and very high R² values ​​(above 0.99) for all target variables. While the estimates performed impressively, the results should be interpreted in a probabilistic context, with recognition of the inherent uncertainty of seismic processes. The framework proposed here provides a clear and replicable approach that can support the development of systems for more reliable short-term earthquake forecasting
Co-Authors Aris Doyan Armanto Arif Baba Musta Eko Andi Suryo Endah Juniarti Fajar Rakhmanto Hetty Triastuti Husni Cahyadi Kurniawan Ira Jam’iyatul Qalbiyah Kartika Andryana Khaista Rehman Madlazim Madlazim Rahim Achmad Rahmawati Rahmawati Sukir Sukir Sunaryo Sunaryo Syarifatul Ulfah Teguh Suroso Wasis Wasis Yuliana Iik Iswanti Chandra