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Optimalisasi Pemutakhiran Data Sarana dan Prasarana Dinas Pemadam Kebakaran dan Penyelamatan Kota Samarinda Berbasis Sistem Informasi Geografis sebagai Upaya Pengurangan Risiko Bencana Muhammad Rizqy Septyandy; Muhammad Amin Syam; Sartika Sartika; Mika Debora Br Barus
Jurnal Surya Masyarakat Vol 6, No 1 (2023): November 2023
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/jsm.6.1.2023.126-134

Samarinda is the capital city of East Kalimantan. As the capital city on the second largest island in Indonesia, Samarinda is home to 834,824 residents. A problem that often arises in densely populated cities is fire. In Samarinda, from 2015 to 2022, there have been at least 2,349 fire incidents with a burned area of 8,090,755 m2 so this city has become one of the cities that most often experience fires on Kalimantan. Several supporting facilities and infrastructure owned by the Samarinda Fire and Rescue Agency, such as hydrants and fire posts have been expanded in number. However, most of these supporting facilities have not been integrated with a good coordinate system. So, when a fire occurs, it takes time to identify the location of these vital facilities. As an effort to solve this problem, the Geological Engineering Study Program, Faculty of Engineering, Mulawarman University and Samarinda State Polytechnic of Agriculture held community engagement activities in the form of geographic information system (GIS)-based application training for Samarinda Fire and Rescue Agency officers. This program aims to provide additional competencies needed by field officers in integrating data on facilities and infrastructure such as hydrants and fire posts into the Samarinda geoportal system. Based on the results of this activity, Samarinda Fire and Rescue Agency officers are skilled in operating applications that can integrate coordinate-based facilities and infrastructure data into a geoportal system, including measuring the burned areas accurately and precisely so that fire incidents in Samarinda can be minimized.

Determination of Liquefaction Hazard in Samarinda Using Fuzzy-GIS Method Rachmadi, Ari; Septyandy, Muhammad Rizqy; Syam, Muhammad Amin
EL-JUGHRAFIYAH Vol 4, No 2 (2024): El-Jughrafiyah : August, 2024
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/jej.v4i2.33050

The phenomenon of liquefaction is the transformation of coarse-grained soil from a solid to a liquid state, resulting in a reduction in the bearing capacity of the soil due to an increase in hydrostatic pressure due to a sudden high cyclic load. Liquefaction usually occurs during an earthquake, where earthquake-triggering factors, ground acceleration, water table depth, overburden pressure, soil density, and soil type are used as input data. A fuzzy-GIS approach is used to combine these factors to map liquefaction potential. This method produced a preliminary map of liquefaction potential in Samarinda City. Validation of the Fuzzy-GIS model used field test data to assess liquefaction potential. The technique used in determining the liquefaction hazard zone in Samarinda is fuzzy-GIS processing with the results of field data calculations in CPT tests. The research results are accurate maps of the liquefaction hazard zone of the Samarinda region based on field data validation and Fuzzy-GIS analysis results. Based on the results of this research, the Samarinda area is divided into four zones of liquefaction hazard, ranging from very low to very low and medium to high. This research results in a map of potential liquefaction risk with more than 90% accuracy for prevention and mitigation in Samarinda City.

Interpretasi Struktur Geologi Berdasarkan Fault Fracture Density (FFD) dan Implikasinya Terhadap Potensi Likuifaksi di Daerah Lempake, Kecamatan Sungai Pinang, Kota Samarinda Provinsi Kalimantan Timur Syam, Muhammad Amin; Pareken, Resky Nopal; Pratama, Micko Dyan; Ayuningtyas, Pridawanti
JURNAL TEKNIK GEOLOGI : Jurnal Ilmu Pengetahuan dan Teknologi Vol 7, No 2 (2024): Jurnal Teknik Geologi : Ilmu Pengetahuan dan Teknologi
Publisher : Teknik Geologi Fakultas Teknik Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jtgeo.v7i2.18084

Pemahaman terhadap struktur geologi suatu daerah sangat penting dalam konteks mitigasi bencana alam, terutama untuk menilai potensi terjadinya likuefaksi. Salah satu metode yang dapat digunakan untuk memahami struktur geologi adalah analisis Fault Fracture Density (FFD), yang mengukur dan memetakan kepadatan rekahan dan sesar di wilayah tertentu. Penelitian ini diterapkan di daerah Lempake, Kecamatan Sungai Pinang, Kota Samarinda, untuk mengidentifikasi potensi likuefaksi yang dapat dipicu oleh aktivitas seismik. FFD digunakan untuk menginterpretasi struktur geologi dan menilai risiko likuefaksi, dengan fokus pada zona-zona yang memiliki kepadatan rekahan tinggi, yang berpotensi meningkatkan permeabilitas tanah dan memungkinkan akumulasi air. Penelitian ini menggabungkan pendekatan mixed-method, mengintegrasikan analisis kuantitatif dan kualitatif melalui data Digital Elevation Model (DEMNAS), pemetaan FFD, pengukuran anomali gaya berat, dan analisis Normalized Difference Water Index (NDWI). Hasil analisis menunjukkan bahwa daerah dengan kepadatan kelurusan tinggi berpotensi mengalami likuefaksi dan kelongsoran, terutama di wilayah dengan kemiringan lereng yang lebih curam dan struktur geologi yang terdeformasi. Temuan ini memberikan wawasan penting bagi pengelolaan risiko bencana geologis di daerah Lempake, dengan rekomendasi praktis untuk perencanaan mitigasi bencana. Kata Kunci: Fault Fracture Density (FFD), likuefaksi, struktur geologi, mitigasi bencana, pemetaan, Digital Elevation Model (DEMNAS), Normalized Difference Water Index (NDWI), anomali gaya berat, kepadatan rekahan, kelongsoran, resiko geoteknik.

Analisis Kestabilan Lereng Dengan Metode Slope Mass Rating (SMR) pada Jalan Alternatif Tenggarong, Kelurahan Lok Bahu, Kecamatan Sungai Kunjang, Kota Samarinda, Provinsi Kalimantan Timur Muhammad Arif Faturrahman; Muhammad Amin Syam; Puspa Indah Rindawati
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 2 (2026): May
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i2.1748

This study aims to analyze rock slope stability based on the Slope Mass Rating (SMR) value at the research area located on the Tenggarong Alternative Road, Lok Bahu Village, Sungai Kunjang District, Samarinda City, East Kalimantan Province. The SMR method is a development of the Rock Mass Rating (RMR) rock mass classification system combined with correction factors related to the orientation of discontinuity planes relative to the slope direction. The parameters used in this study include rock compressive strength obtained from the Point Load Index (PLI) test, Rock Quality Designation (RQD) values calculated using the scanline method, joint spacing, joint condition, and groundwater condition. The analysis results indicate that the slope-forming lithology is dominated by sandstone with an RMR value of 63, which falls into class II (good). Kinematic analysis using stereonet shows the potential for wedge failure caused by the intersection of two discontinuity planes with a probability of occurrence of 15.97%. Based on the correction of discontinuity orientation relative to the slope, the SMR value obtained is 54, which is classified as class III (normal). This indicates that the slope condition is generally fairly stable but still has the potential for failure, particularly wedge failure; therefore, periodic monitoring and slope management are required to minimize the risk of landslides in the study area.

Assessment of Liquefaction Hazard Potential Using Decision Tree, Random Forest and Support Vector Machine: A Case Study of Samarinda, Indonesia Muhammad Rizqy Septyandy; Divo Dwi Bramantyo; Muhammad Amin Syam
MALCOM: Indonesian Journal of Machine Learning and Computer Science Vol. 6 No. 3 (2026): MALCOM July 2026
Publisher : Institut Riset dan Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57152/malcom.v6i3.2541

Earthquake-induced soil liquefaction is a major hazard for urban areas in Indonesia built on recent alluvial deposits. This study evaluates three supervised machine learning algorithms Decision Tree (DT), Random Forest (RF), and Support Vector Machine (SVM) liquefaction hazard mapping in Samarinda, East Kalimantan. Four predictor variables were used: shear wave velocity (Vs30), peak ground acceleration (PGA), groundwater level (GWL), and slope. Because only four Cone Penetration Test (CPT) locations were available, the dataset was expanded to 532 labeled samples through stratified spatial sampling of a previously published CPT-based fuzzy GIS liquefaction map. An 80:20 train-test split was used, and SMOTE was applied only to the training data to address class imbalance. Model performance was evaluated using accuracy, precision, recall, F1-score, and confusion matrices. DT achieved the best performance with an accuracy and weighted F1-score of 0.87, followed by SVM (0.80) and RF (0.78). The resulting hazard map classified Samarinda into Very Low (68%), Low (6%), High (7%), and Very High (19%) hazard zones. High-risk areas were concentrated in the eastern part of the city, where shallow groundwater, Sulfaquent soils, and recent alluvial deposits are present.

Optimalisasi Pemutakhiran Data Sarana dan Prasarana Dinas Pemadam Kebakaran dan Penyelamatan Kota Samarinda Berbasis Sistem Informasi Geografis sebagai Upaya Pengurangan Risiko Bencana Muhammad Rizqy Septyandy; Muhammad Amin Syam; Sartika Sartika; Mika Debora Br Barus
Jurnal Surya Masyarakat Vol 6, No 1 (2023): November 2023
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/jsm.6.1.2023.126-134

Samarinda is the capital city of East Kalimantan. As the capital city on the second largest island in Indonesia, Samarinda is home to 834,824 residents. A problem that often arises in densely populated cities is fire. In Samarinda, from 2015 to 2022, there have been at least 2,349 fire incidents with a burned area of 8,090,755 m2 so this city has become one of the cities that most often experience fires on Kalimantan. Several supporting facilities and infrastructure owned by the Samarinda Fire and Rescue Agency, such as hydrants and fire posts have been expanded in number. However, most of these supporting facilities have not been integrated with a good coordinate system. So, when a fire occurs, it takes time to identify the location of these vital facilities. As an effort to solve this problem, the Geological Engineering Study Program, Faculty of Engineering, Mulawarman University and Samarinda State Polytechnic of Agriculture held community engagement activities in the form of geographic information system (GIS)-based application training for Samarinda Fire and Rescue Agency officers. This program aims to provide additional competencies needed by field officers in integrating data on facilities and infrastructure such as hydrants and fire posts into the Samarinda geoportal system. Based on the results of this activity, Samarinda Fire and Rescue Agency officers are skilled in operating applications that can integrate coordinate-based facilities and infrastructure data into a geoportal system, including measuring the burned areas accurately and precisely so that fire incidents in Samarinda can be minimized.

English: 199 - 224 Diftania Avanda Ayu Shinta; Muhammad Rizqy Septyandy; Muhammad Amin Syam; Aji Muhammad Rifqi Abdillah; Pridawanti Ayuningtyas; Panggea Ghiyats Sabrian
SPECTA Journal of Technology Vol. 10 No. 2 (2026): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v10i2.8481915

The Sambutan District in Samarinda, East Kalimantan, has a hilly terrain with varying slopes and mainly consists of soft sedimentary materials, making it prone to landslides. Without prompt management, these landslides could cause significant damage. This study aims to identify high-risk landslide areas in Sambutan District to guide authorities in implementing mitigation measures and minimizing potential losses. The research combined field surveys and laboratory tests, including Cone Penetration Tests (CPT) at key points to evaluate soil stratigraphy and strength through cone resistance. These findings were correlated with physical soil analyses, which measured water content, specific gravity, bulk density, and Atterberg limits (liquid, plastic, and shrinkage limits). A direct shear test was also conducted to determine soil shear strength parameters, cohesion (c) and internal friction angle (φ), to assess slope stability using the safety factor (FK). Based on these tests, landslide risk was categorized into low, medium, and high, considering factors like slope angle, height, direction, rainfall, soil type, proximity to rivers and roads, as well as NDVI, NDBI, land cover, and slope curvature. These factors were analyzed with the Weight of Evidence (WoE) method. Results indicate that slope, soil type, and elevation are the most influential parameters for landslides. High-risk areas extend northward, then south, with additional zones in the northwest, southwest, and a small eastern section. Laboratory results show that soft soils, such as clay with moderate to high plasticity, are common in landslide-prone zones. The greater the soil plasticity, the higher the landslide risk. These findings provide a scientific basis for government policies and spatial planning aimed at targeted mitigation efforts to prevent further damage losses.

Analisis Stabilitas Lereng Menggunakan Metode Bishop Simplified di Kecamatan Samarinda Utara, Kota Samarinda, Provinsi Kalimantan Timur Rachel Maria Tinambunan; Koeshadi Sasmito; Muhammad Amin Syam; Heriyanto; Puspa Indah Rindawati
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 4 (2026): November (In Press)
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i4.3151

Settlement development on hilly morphology in North Samarinda District has encouraged slope utilization through cut and fill activities, and a landslide on 12 May 2025 in Lempake Sub-District underscored the necessity of slope stability studies in the area. This study analyzes the stability of two simple sandstone slopes, Slope A and Slope B, in the Bumi Alam Indah Housing Complex, using the Bishop Simplified method. Data were obtained through lithological description, slope geometry measurement, rock physical properties testing, and Schmidt Hammer testing, processed using the Hoek-Brown to Mohr-Coulomb failure criterion to determine the shear strength parameters, cohesion and friction angle. Analysis was conducted under dry and saturated conditions and evaluated against the applicable minimum factor of safety (FoS). Result show that Slope A obtained an FoS of 1.528 (dry) and 1.294 (saturated), while Slope B obtained and FoS of 2.957 (dry) and 2.513 (saturated). Slope A failed meet the minimum safety treshold under saturated conditions due to a higher degree of weathering, whereas Slope B remained stable under both conditions. Modifying the slope angle of Slope A from 70° to 55° increased the FoS to 1.882 (dry) and 1.611 (saturated). Both slopes are interpreted to have the potential for rotational failure.

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