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Department of Geography Education , University of Jember, FKIP Building Jl. Kalimantan 37, Jember, East Java, 68121, Indonesia.
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Geosfera Indonesia
Published by Universitas Jember
ISSN : 25989723     EISSN : 26148528     DOI : https://doi.org/10.19184/geosi
Core Subject : Science, Education, Social,
Earth & Planetary Sciences Education Environmental Science
Geosfera Indonesia is a journal publishes original research, review, and short communication (written by researchers, academicians, professional, and practitioners from all over the world) which utilizes geographic and environment approaches (human, physical landscape, nature-society and GIS) to resolve human-environment interaction problems that have a spatial dimension.
Arjuna Subject : Ilmu Sosial - Geografi, Perencanaan dan Pengembangan
Articles 6 Documents
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Search results for , issue "Vol. 10 No. 2 (2025): GEOSFERA INDONESIA" : 6 Documents clear
An Assessment of the Trend and Periodicity of Fire Disasters in Sokoto Metropolis, in Nigeria Ismaila, Aliyu; Adamu, Abdullahi; Musa, Yakubu Fakai
Geosfera Indonesia Vol. 10 No. 2 (2025): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v10i2.48998

Abstract

Global trends indicate that both natural and man-made disasters are on the increase and more people are being affected. This study assessed the trend and monthly distribution of fire disasters in the Sokoto metropolis. Data on monthly records were collected from the Sokoto State Fire Service Department for 2000-2023. Monthly meteorological data for wind speed, sunshine maximum and minimum temperature were collected from the Nigerian Meteorological Agency (NIMET) spanning the period of 2000-2023. Trends were calculated using the Mann-Kendall test. Also, multiple linear regression was used to examine the contribution of weather variables to fire disasters. Results revealed and upward trend. The fire frequency is surging on a trend with positive both monthly and annually. The magnitude of the trend produced statistical P-values of 0.000 for January, February and March while  P-values of <0.0001 were observed on an annual basis. The findings revealed that the critical time for fire incidences are afternoon  hours. The result indicates that February March, January and December constitute the fire disaster-prone period and correspond to the cold dry and hot dry months in the area. Also, maximum temperature accounts for (R2 =0.049), minimum temperature (R2= 0.103), wind speed (R2= 0.004) and Sunshine hours accounted for about (R2= 0.017). There is a need to educate and sensitise the residents through mobile telephony, radio and television broadcasts on the high-risk months identified. Additional fire stations in cluster patterns of distribution should be set up and more fire-fighting personnel should be recruited.
School-Based Disaster Education Model in Lumajang, Indonesia Yushardi; Suharso, Pudjo; Zulianto, Mukhamad; Laili, Alfin Nur; Sedyati, Retna Ngesti
Geosfera Indonesia Vol. 10 No. 2 (2025): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v10i2.52600

Abstract

Disaster management is mostly done through a technological approach. In addition to the technological approach, disaster management needs to use a cultural, non-technological approach. This study focuses on school-based disaster education as one of the cultural approaches in the area affected by the eruption of Mount Semeru, Lumajang. The purpose of this study was to analyze the implementation of the disaster education model for high school level based on Disaster Safe Schools in the area affected by the eruption of Mount Semeru, Lumajang. The research method used is descriptive statistics to see students' perceptions of 3 aspects of disaster-safe schools consisting of the availability of disaster-safe school facilities and infrastructure, disaster management for disaster-safe schools and disaster risk reduction education for disaster-safe schools. Through Focus Group Discussion (FGD) of social studies teachers, the importance of implementing school-based disaster education was analyzed which includes three aspects of disaster-safe schools. The results in the first aspect regarding the availability of disaster-safe school facilities and infrastructure, on average students have adequate knowledge about disaster-safe school facilities and infrastructure. In the second aspect of disaster management for disaster-safe schools, students view that schools have not fully implemented disaster management and in the third aspect, namely disaster risk reduction education for disaster safety, students consider that it has not been carried out optimally. Meanwhile, for the implementation of disaster education, they prefer a curricular education model by integrating it into relevant social studies subjects. The results of the FGD with teachers revealed that in the first aspect, the four schools did not have adequate facilities and infrastructure. In the second aspect, only 2 schools carried out adequate disaster management, the other two schools were not optimal. In the third aspect of disaster risk reduction education, teachers chose to integrate it into relevant subjects. The conclusion of this study reveals that the school-based disaster education model has not been implemented by all schools in the areas affected by the eruption of Mount Semeru.
Evaluation of Catchment area delineation Methods: Comparison of TOPAZ on WMS with HEC-HMS 4.12 Setiyowati, Yunita Ayu; Harisuseno, Donny; Sajali, M. Amar
Geosfera Indonesia Vol. 10 No. 2 (2025): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v10i2.53253

Abstract

The delineation of catchment areas plays a crucial role in hydrological modeling, influencing water resource management and flood analysis. However, differences in Digital Elevation Model (DEM) resolutions and processing methods can significantly affect the accuracy of delineation results. This study aims to evaluate the differences in catchment area delineation using Hydrologic Engineering Center-Hydrologic Modeling System (HEC-HMS) 4.12 and Watershed Modeling System (WMS) TOPAZ across three DEM resolutions: DEMNAS (8.29 m), ASTER (30 m), and SRTM (90 m). The methodology involves processing DEM data using both software tools, comparing catchment area, main river length, and basin length derived from each resolution. The analysis reveals that higher DEM resolution results in greater similarity between the two methods. At an SRTM resolution of 90 m, the delineated catchment area is 1474.41 km² (WMS) and 1468.03 km² (HEC-HMS), whereas at an 8.29 m DEMNAS resolution, it is 1462.64 km² (WMS) and 1462.91 km² (HEC-HMS). Additionally, significant differences are observed in the main river length, with 44,368.54 m (WMS) and 34,960.17 m (HEC-HMS) at 90 m resolution, and 58,195.71 m (WMS) and 42,537.38 m (HEC-HMS) at 8.29 m resolution. These findings highlight the importance of selecting an appropriate DEM resolution to ensure accurate and consistent hydrological delineation.
Experimental Investigation of Wrap-Faced Reinforced Soil Embankments on Soft Clay: A Sustainable Solution for Infrastructure Development in Bangladesh Hore, Shoma; Alim, Mosharof Al; Hore, Ripon
Geosfera Indonesia Vol. 10 No. 2 (2025): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v10i2.53689

Abstract

Wrap-faced reinforced soil retaining walls are a widely accessible solution globally, especially in areas where land use is a concern. The wrap-faced layer requires less space on both sides of the wall, making it a more economical and efficient option, and it is less vulnerable to dynamic loading. Incorporating dynamic loading in the design phase is crucial; however, current embankment projects in Bangladesh do not account for this aspect. Traditionally, sand embankments are constructed atop soft clay layers in road and railway embankment projects in Bangladesh. This research proposes the use of a wrap-faced embankment system on soft clay, piloted based on shake table test results conducted at the Bangladesh University of Engineering and Technology. Various governmental agencies, including the Roads and Highways Department, Local Government Engineering Department, and Bangladesh Railway, are involved in the construction of embankments, which typically require large land areas, especially for embankments with slopes of 1:2 or 1:3. This significant land requirement often becomes a limitation. In contrast, the wrap-faced embankment system offers a viable solution to the land scarcity issue, as it minimizes horizontal space usage and reduces construction costs compared to traditional embankments. This research details the proposed construction process and the modeling of the wrap-faced embankment system, offering insights into its potential for improving embankment design and land utilization in Bangladesh. The research evaluated the dynamic behavior of wrap-faced embankments on soft clay through PLAXIS 3D numerical modeling and shake table experimentation.   The results indicated a consistent decrease in displacement with increased surcharge load.   This confirms the potential of wrap-faced systems to enhance embankment stability during seismic events in Bangladesh.
Carbon Sequestration Strategies: Evaluating the Potential of Reforestation and Soil Management Vijai, C.; Rameshkumar, S.
Geosfera Indonesia Vol. 10 No. 2 (2025): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v10i2.53701

Abstract

The increasing awareness of atmospheric carbon dioxide is the first driver of weather exchange, prompting pressing global efforts to identify effective carbon sequestration strategies. Among these, reforestation and soil management have emerged as promising natural solutions. This study evaluates the capability of these strategies in taking pictures and storing atmospheric carbon sustainably. Reforestation, through the healing of wooded area ecosystems, enhances biomass accumulation and long-term carbon storage, at the same time as advanced soil management practices, which include conservation tillage, biochar application, cover cropping, and growth of soil organic carbon levels. This study severely analyses the carbon sequestration capacity, price-effectiveness, and co-benefits, which include biodiversity conservation and soil fitness development related to every technique. It also addresses the challenges, together with land availability, maintenance prices, and socio-monetary elements influencing large-scale implementation. By synthesizing current case studies and scientific facts, the paper provides a complete evaluation of how reforestation and soil control can contribute meaningfully to worldwide climate change mitigation techniques.
The Impact of Residents’ Involvement in the Spatial Transformation of Inner-City Slums in Ibadan Adeniji, Temitope Abigail; Gasu, Martin Binde; Julius, Samuel Kayode
Geosfera Indonesia Vol. 10 No. 2 (2025): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v10i2.53700

Abstract

Residents' active participation is crucial in influencing the transformation of inner-city slums, especially in fast-growing cities like Ibadan. Recognizing this role is crucial for developing inclusive planning strategies that effectively address the actual needs of the urban poor. This research examined the impact of community involvement on urban changes in Ibadan’s core areas, Oyo State, Nigeria, from 1990 to 2020. A structured survey of 552 residents from selected slum communities measured their participation in city transformation efforts, focusing on social and environmental improvements, resource allocation, the effectiveness of interventions, and challenges to slum redevelopment. Analysis using the Social Sciences Statistical Package (SPSS) showed that residents’ participation had limited influence on revitalizing Ibadan’s inner-city slums. The primary participation methods were consultations (35.7%) and incentives, such as gifts (27.2%). Despite efforts to involve communities in planning, major obstacles persisted, including corruption, bureaucratic delays, political interference, mismanagement of funds, limited capacity, poor coordination, delays, and insufficient funding (30%) of urban renewal funds were reportedly misused. Persistent challenges such as degraded infrastructure, poor socio- environmental conditions, and ineffective transformative initiatives remain prevalent, with a Slum Deprivation Index (SDI) indicating high levels of residential and environmental deprivation (RED) and water, sanitation, and hygiene (WASH) deprivation across the study areas. The study concludes that comprehensive and inclusive participation is essential for sustainable urban development. It contributes to ongoing discourse on the effectiveness of spatially and politically driven participatory approaches in urban settings, advocating for policies that prioritize periodic urban renewal and robust community involvement.

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