Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal Jambura Geoscience Review Journal of Geosciences and Applied Geology
Nurohim, Dede
Unknown Affiliation
Earth & Planetary Sciences Engineering

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
GEOPLANOLOGY MODELING IN THE PLANNING AREA OF MAJALENGKA, WEST JAVA Nurohim, Dede; Princessca, Channia; Khoirullah, Nur; Sulaksana, Nana; Waliana, Teuku Yan
Journal of Geological Sciences and Applied Geology Vol 2, No 6 (2018): Journal of Geological Sciences and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v2i6.20871

Abstract

Based on the geological condition, the study area consisted of carbonate sandstone units (Tmbp), claystone units (Tml), non-carbonate sandstone units (Tpbp), andesitic intrusions (Ia), volcanic breccia units (Qbv), and alluvium (Qal) units. The different types of constituent rocks will affect the innate characteristics or properties of the rock. The regional genetic units explain kinship relations between lithology, morphology, and tectonics. It is used to determine the genetic processes that occur in an area which will later be developed into the smallest units in the geological analysis. In terms of spatial planning, the geological analysis is needed to produce an ideal area in terms of water adequacy, environmental carrying capacity, and disaster. In accordance with Law No. 11 of 2011 concerning the district development plan of Majalengka, then a layout plan emerged that would be applied to the area. Especially in the research area, land suitability covers a possible area that has a value of> 131, spread in the north to the west of the research area, with high to the very high land capability to be developed. The constrained area which has a value of 121-131 is spread in the north to south of the research area, with the ability of the land to be developed. And the limitation area has a value of <121 dominating in the northwest to the southeast of the research area, with low land capacity - very low to be developed. Based on the analysis, there are still some areas that are not in accordance with the pattern of development which should be mainly the development of protected areas.
GIS-Based Landslide Susceptibility Mapping Using Weighted Overlay in Ogan Komering Ulu Juliansyah, Ilham Rahmat; Harnani, Harnani; Nurohim, Dede
Jambura Geoscience Review Vol 8, No 1 (2026): Jambura Geoscience Review (JGEOSREV)
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jgeosrev.v8i1.36391

Abstract

Landslides pose a major hazard in Ogan Komering Ulu Regency, South Sumatra, where rugged relief, high rainfall, and land-use change can reduce slope stability. This study develops a GIS-based landslide susceptibility map using the weighted overlay method to support disaster mitigation and spatial planning. Five conditioning factors—slope, rainfall, geology, soil type, and land use—were prepared as thematic layers from DEMNAS topography, CHIRPS rainfall estimates interpolated using Inverse Distance Weighting, geological shapefiles from Ina-Geoportal, soil information from the FAO–UNESCO Digital Soil Map of the World, and land-cover data from the Indonesian Base Map (RBI). Each factor was reclassified into susceptibility classes, assigned scores, and weighted according to its relative influence on landslide occurrence, then integrated through overlay analysis to produce a composite susceptibility index. The index was classified into low, moderate, and high susceptibility zones. The results indicate that moderate susceptibility dominates most of the study area, while high-susceptibility zones are concentrated in hilly to mountainous terrains with steep slopes and unfavorable geological and soil conditions. Model performance, evaluated using a landslide inventory and the Receiver Operating Characteristic curve, produced an Area Under the Curve value of 0.715, indicating moderate predictive accuracy. The susceptibility map provides actionable spatial information to prioritize monitoring and guide land-use management in Ogan Komering Ulu.
WATER BALANCE CHARACTERISTICS OF KEI KECIL ISLAND, SOUTHEAST MALUKU: AN INITIAL APPROACH TO GROUNDWATER MANAGEMENT ON A SMALL CARBONATE ISLAND Nurohim, Dede; Setiawan, Budhi; Harnani, Harnani; Febrim, Dwi Vina
Journal of Geological Sciences and Applied Geology Vol 9, No 3 (2026): Journal of Geological Sciences and Applied Geology
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v9i3.72466

Abstract

Small carbonate islands commonly depend on groundwater as their primary freshwater resource, making an understanding of water availability essential for sustainable groundwater management. This study characterises the water balance of Kei Kecil Island, Southeast Maluku, Indonesia, as an initial step toward understanding groundwater availability in a small carbonate-island environment. The study used precipitation, evapotranspiration, and available water capacity (AWC) data. Precipitation and evapotranspiration data for 2000–2025 were processed spatially and temporally to derive monthly and annual characteristics within the Kei Kecil Island boundary. AWC data for the upper 0–30 cm soil layer were used to support the interpretation of near-surface water storage. The water balance was determined from the difference between precipitation and evapotranspiration and was subsequently evaluated at monthly and annual scales. The results show a mean annual precipitation of 2,409.94 mm/year and mean annual evapotranspiration of 1,488.95 mm/year, resulting in a positive annual water balance of 920.99 mm/year. The AWC ranged from 4.95 to 63.75 mm, with a mean of 35.60 mm, indicating spatial variation in the upper soil layer's capacity to retain water. The positive water balance shows that precipitation provides an important water input to Kei Kecil Island's hydrological system after accounting for evapotranspiration losses. However, the calculated water surplus cannot be directly considered equivalent to groundwater recharge because excess water may be partitioned into infiltration, runoff, soil-water storage, and groundwater discharge. The findings provide a preliminary hydrological framework that complements existing information on the freshwater groundwater system and supports using water balance characterisation as an initial approach to groundwater management on small carbonate islands.
Co-Authors Budhi Setiawan Febrim, Dwi Vina Harnani Harnani Harnani, Harnani Juliansyah, Ilham Rahmat Khoirullah, Nur Nana Sulaksana Princessca, Channia Waliana, Teuku Yan