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All Journal Jurnal Teknologi Rekayasa Mesin Jurnal Teknik Sipil Jurnal Fisika FLUX FROPIL (Forum Profesional Teknik Sipil) TERRA : Journal of Land Restoration Jurnal Aplikasi Teknik Sipil Jurnal Pensil : Pendidikan Teknik Sipil PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Teori dan Aplikasi Fisika Inersia : Jurnal Teknik Sipil Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Engineering, Mathematics and Computer Science Journal (EMACS) Matriks Teknik Sipil Jurnal Geosaintek
Khairul Amri
Civil Engineering, University Of Bengkulu
Agriculture, Biological Sciences & Forestry Humanities Astronomy Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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3D Geospatial Analysis of Soil Unit Weight Using the Radial Basis Function (RBF) and Ordinary Kriging (OK) Methods in Ketahun Sub-district, North Bengkulu Nafisa Auliya; Lindung Zalbuin Mase; Khairul Amri; Rahmat Fahrizal; Rena Misliniyati; Hardiansyah -
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 23, No 2 (2026): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v23i2.25927

Abstract

Ketahun is one of the areas in North Bengkulu Regency, Bengkulu Province, which is affected by seismic activity, with geological conditions dominated by sedimentary from Bintunan Formation, which influence soil characteristics for geotechnical planning. Previous research on three-dimensional (3D) geospatial modeling in Bengkulu region was generally limited to soil technical parameters, while  soil unit weight parameters were rarely used. This study aims to make 3D modeling of subsurface structure and soil unit weight distribution (γsat, γb, and γd) in Ketahun using geospatial approach. The research utilize data from field investigations at 15 Cone Penetration Test (CPT) points, which were then empirically correlated determine soil unit weight values. The 3D modeling was built using Leapfrog Geo application, through the Implicit Geological Modeling approach based on Radial Basis Function (RBF), while the distribution of bulk density parameters was estimated using Ordinary Kriging (OK). The validation results showed an R2 (0,95 - 0,96), RMSE (0,48 – 0,55), and MAE (0,34 – 0,46) proving that this 3D model is able to represent the spatial distribution of soil parameters measurably, with consistence parameter relationships, where γsat > γb > γd. The average values obtained for untuk  γsat is 19,77 kN/m3, γb is 19,67 kN/m3, and γd is 15,82 kN/m3. The results of this study are expected to provide insight into the subsurface and distribution of bulk density to further geotechnical analysis for support the planning of earthquake-resistant building structures.
Co-Authors Aditya Afrizal Agus Nuramal agustin, elfi agustin Ahadi Somad Syahlan Ahmad Syukron Arif Ismul Hadi Besperi Besperi, Besperi Besperi Darmawan Ikhlas Fadli Dedi Setiawan Diefi Deayuzeta Dody Ariawan Faisal Hadi Fepy Supriani Fepy Supriani Gunawan, Gusta Gunawan Gusta Gunawan Hanan Shalsabillah Hardiansyah - Hardiansyah Hardiansyah Hendri Hestiawan Hendy Apriyanza Indri Novtrisa IRNANDA PRIYADI Lindung Zalbuin Mase Lindung Zalbuin Mase M. Faiz Barchia M. Hafidz Ramadhan Misliniyati, Rena Misliniyati Muhammad Faiz Barchia, Muhammad Faiz Muhammad Farid Muhammad Fauzi Muharram Nur Fikri Nafisa Auliya Rahmat Fahrizal Raihanah Naura Jinan Refrizon Refrizon Rena Misliniyati Rena Misliniyati Renra Apriantoni Rezky Haredho Akbar Roky Suprandani Satria Dimas Syaiful Sudibyo Sudibyo Sulastri Febiana Tri Bintang Pratitis Wawan Kurniawan Yanolanda Suzantry Handayani Yuzuar Afrizal