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All Journal Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources)
Wiratama, Rana
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Agriculture, Biological Sciences & Forestry Chemistry Earth & Planetary Sciences Education Energy Physics

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Analisis Stabilitas Lereng Menggunakan Metode RMR dan SMR di Daerah Malanu, Distrik Sorong Utara, Kota Sorong, Provinsi Papua Barat Daya Mayzarah, Erikha Maurizka; Padendenan, Hardus; Wiratama, Rana; Tandirerung, Restu
Jurnal Geologi dan Sumberdaya Mineral Vol. 26 No. 1 (2025): JURNAL GEOLOGI DAN SUMBERDAYA MINERAL
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v26i1.805

Abstract

Kondisi lereng pada kawasan tambang batuan di Daerah Malanu, Distrik Sorong Utara, Kota Sorong sangat menarik, karena terdapat rekahan-rekahan yang kemungkinan menyebabkan lereng berada dalam kondisi tidak stabil dan berpotensi menimbulkan bencana. Tujuan dari penelitian ini adalah untuk menganalisis kualitas massa batuan, tingkat kestabilan lereng, dan upaya perkuatan lereng, sehingga dapat memberikan informasi kepada instansi terkait dan masyarakat mengenai kondisi lereng tersebut. Metode yang digunakan adalah scanline sampling, analisis RMR, analisis SMR, dan analisis kinematik. Dari hasil analisis, didapatkan bahwa lereng 1 memiliki nilai RMR 65 (baik), tipe runtuhan guling, dan nilai SMR 65 (stabil), lereng 2 memiliki nilai RMR 67 (baik), tipe runtuhan baji, dan nilai SMR 59,5 (stabil sebagian), lereng 3 memiliki nilai RMR 63 (baik), tipe runtuhan bidang, dan nilai SMR 57 (stabil sebagian), lereng 4 memiliki nilai RMR 63 (baik), tipe runtuhan bidang, dan nilai SMR 13 (sangat tidak stabil), serta lereng 5 memiliki nilai RMR 60 (sedang), tipe runtuhan guling, dan nilai SMR 60 (stabil). Rekomendasi perkuatan yang disarankan oleh Romana (1985) adalah perkuatan (IIb) untuk lereng 1, perkuatan (IIIa) untuk lereng 1,2, dan 5, serta perkuatan (Va) untuk lereng 4. Kata kunci: Massa Batuan, Kestabilan lereng, Scanline, RMR, SMR  
Analisis Tingkat Kerawana Banjir Daerah Distrik Masni Kabupaten Manokwari Provinsi Papua Barat Mayzarah, Erikha Maurizka; Rumayomi, Shopia Widya Selly; Wiratama, Rana
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1105

Abstract

This study aims to analyze flood susceptibility in Masni District, Manokwari Regency, West Papua Province, using a geospatial approach based on Geographic Information Systems (GIS). The study area is characterized by complex geological and geomorphological conditions and has experienced significant flood events, notably in 2020 and 2024, which affected thousands of residents and infrastructure. The research employed overlay and scoring methods by integrating six main parameters: lithology, rainfall, slope, elevation, land use, and distance from rivers. Each parameter was assigned a weight and score according to its relative influence on flood occurrence. The data utilized in this study were derived from secondary sources, including DEMNAS, RBI maps, CHIRPS rainfall data, land use imagery, and field observations. The analysis results indicate that areas composed of alluvial deposits, gentle slopes, high rainfall intensity, low elevation, residential land cover, and proximity to rivers exhibit high flood susceptibility. The resulting flood susceptibility map classifies the study area into several zones: very high, high, moderate, and low susceptibility. This research is expected to serve as a reference for spatial planning and flood disaster mitigation strategies, as well as to provide valuable information for local communities and regional authorities.
Co-Authors Erikha Maurizka Mayzarah Padendenan, Hardus Rumayomi, Shopia Widya Selly Tandirerung, Restu