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Calamity: A Journal of Disaster Technology and Engineering
Published by Institute for Advanced Science, Social, and Sustainable Future
ISSN : -     EISSN : 30254140     DOI : -
Core Subject : Science, Engineering,
Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering
Calamity: A Journal of Disaster Technology and Engineering focuses on unique research on all facets of natural hazards, such as the prediction of catastrophic events, risk management, and the nature of natural and manmade hazard precursors. The effects on the environment are equally disastrous even if risks might come from a variety of sources and systems, including atmospheric, hydrologic, oceanographic, volcanologic, seismic, and neotectonic. This calls for tight collaboration between many scientific and operational disciplines in order to improve risk reduction. Risk assessment is included in the coverage of hazards in the atmospheric, climatological, oceanographic, storm surge, tsunami, flood, snow, avalanche, landslide, erosion, volcanic, man-made, and technology categories.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 7 Documents
 1 
Search results for , issue "Vol. 2 No. 2: (January) 2025" : 7 Documents clear
Revitalizing flood-prone areas through socio-environmental strategies: A qualitative approach to urban flood management Pamungkas, Paminto Jati; Kristianto, Ary; Prianto, Muhammad Dwi; Rahman, Robby Zidni; Firmansyah, Risky Teguh
Calamity: A Journal of Disaster Technology and Engineering Vol. 2 No. 2: (January) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v2i2.2025.1025

Abstract

Background: The Ciliwung River is one of the most important rivers in Tatar Pasundan, especially because it passes through the capital city of DKI Jakarta and often causes annual floods in its downstream areas. The length of this river reaches almost 120 km and passes through several areas, including Bogor Regency, Bogor City, Depok City, and DKI Jakarta Province. High rainfall is one of the factors that often causes flooding in areas around rivers. Methods: This research aims to analyze the management of flood disasters that occur due to the overflow of the Ciliwung River. The analysis carried out by the author used qualitative methods with a literature review. Findings: The results obtained from the literature review of several journals, namely flood management on the Ciliwung River, cannot still be said to be completely successful. This is because several factors trigger floods that have not yet been resolved and appropriate solutions are needed for flood-prone areas so that they can be revitalized so that they can provide direct benefits to the community.  Conclusion: The study highlights the persistent challenges in managing flood disasters caused by the overflow of the Ciliwung River. Despite various efforts, flood management in the Ciliwung River Basin has not been entirely successful. Several unresolved factors continue to trigger flooding, indicating the need for more effective and sustainable solutions. The revitalization of flood-prone areas is essential to mitigate the impact and provide direct benefits to the affected communities. Novelty/Originality of the Article: Unlike previous studies that focus on specific technical solutions, this research highlights the need for holistic revitalization of flood-prone areas, considering socio-environmental factors to enhance community resilience and sustainable flood mitigation strategies.
Spatial-temporal analysis of built-up land development in landslide-prone areas: Disaster risk assessment Rakuasa, Heinrich
Calamity: A Journal of Disaster Technology and Engineering Vol. 2 No. 2: (January) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v2i2.2025.1179

Abstract

Background: This study aims to analyze the development of built-up land in landslide-prone areas in Ambon City from 2014 to 2024, considering the increased disaster risk due to unplanned urbanization. Methods: The methods used include spatial temporal analysis utilizing Landsat 7 and Landsat 8 satellite imagery data, as well as landslide risk maps from the National Disaster Management Agency (BNPB). Findings: The results showed that built-up land in high-risk areas increased sharply, from 429.91 hectares in 2014 to 951.65 hectares in 2024, potentially increasing vulnerability to landslides. Conclusion: The study recommends the need for stricter spatial policies and better risk management to control development in landslide-prone areas. In conclusion, wise management and integration of landslide risk maps in urban planning are essential to mitigate the negative impacts of land use change and protect communities from disasters. Novelty/Originality of this article: This study offers a unique contribution by combining spatial-temporal analysis using Landsat satellite imagery with landslide risk maps to assess the impact of unplanned urbanization on landslide-prone areas, providing new insights into the relationship between urban development and disaster risk in Ambon City.
The impact of overtime duration variations on labor productivity in apartment construction projects: A study on engineering and disaster management in the construction sector Mirnayani; Paradiba, Hafisa
Calamity: A Journal of Disaster Technology and Engineering Vol. 2 No. 2: (January) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v2i2.2025.1321

Abstract

Background: Construction projects, especially apartment buildings, often face challenges such as resource limitations, unpredictable weather, and schedule delays, which lead to increased costs and reduced productivity. Overtime is a commonly adopted strategy to address these issues; however, its effect on labor productivity is complex. Methods: This study investigates the impact of varying overtime durations (1, 2, and 3 hours) on labor productivity and Labour Utilization Rate (LUR) for three critical tasks: rebar installation, concrete casting, and formwork installation in the Sky House Alam Sutera project. The Productivity Rating method and LUR analysis were used to evaluate normal productivity and productivity during overtime, with data collected through direct observation, interviews, and project documentation analysis. Findings: The results reveal that while overtime increases daily output, it also reduces productivity per hour as work hours extend. Rebar installation exhibited the most significant decline in productivity, from 493.529 kg/hour  during regular hours to 345.470 kg/hour with 3 hours of overtime. Correspondingly, the LUR improved with overtime, with rebar installation increasing from 68% under normal conditions to 72% with 3 hours of overtime. Similarly, the cost of labor increased by 9%–23% due to overtime, depending on the task and duration. Conclusion: The findings suggest that the optimal overtime duration is 1 hour, balancing productivity gains, cost efficiency, and LUR improvements, while prolonged overtime may lead to diminishing returns due to worker fatigue. This study provides insights into managing overtime in construction projects, emphasizing the importance of controlling overtime durations to achieve project objectives efficiently. Novelty/Originality of this article: This study offers an original perspective by examining the impact of varying overtime durations on both labor productivity and Labor Utilization Rate (LUR) in the context of construction projects, using a detailed analysis of three critical tasks.
Landslide characteristics triggering evacuations: A comparative study of community responses and disaster management approaches Indratmoko, Satria; Koestoer, Raldi Hendro
Calamity: A Journal of Disaster Technology and Engineering Vol. 2 No. 2: (January) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v2i2.2025.1437

Abstract

Background: Landslides are one of the most dangerous geological disasters in the world due to the movement of earth material caused by gravity. Landslides also threaten the environment, property, and human life risks in high-risk areas. This study compares how landslide characteristics impact evacuation planning in Indonesia and various other countries. Methods: Utilizing a Systematic Literature Review (SLR) of studies published between 2019 and 2024, this research examines landslide characteristics that prompt community evacuation responses, such as landslide triggers, physical conditions, and the number of people affected. Findings: Findings reveal that while Indonesia and other high-risk countries face substantial landslide risks, challenges remain in enhancing disaster preparedness, including evacuation planning to minimize casualties. Physical characteristics and the preparedness of early warning systems are crucial in shaping community responses to landslides. This case study illustrates how a combination of steep slopes over 40 degrees, heavy rainfall intensity of more than 200 mm in one week, weak soil textures, and dense vegetation can trigger devastating landslides. However, landslides triggered by seismic activity result in significantly higher fatalities, and special attention is needed in areas prone to landslides and earthquakes, as happened in Nepal (highland and mountainous climate). In China (subtropic region), landslides are primarily triggered by moisture-saturated soils, which are vulnerable to ground motion, particularly during prolonged rainfall. In Indonesia as tropical region, landslides triggering evacuation predominantly occur in areas with highly erodible and unstable soils, exacerbated by high rainfall. Conclusion: Evacuation planning must be more adaptive and supported by GIS technology to identify high-risk areas. Globally, evacuation success relies on infrastructure, community awareness, and disaster preparedness. Novelty/Originality of thid article: This study highlights the importance of crisis management strategies tailored to the specific landslide characteristics of each region, as well as the crucial role of community involvement and technology in ensuring effective evacuations.
Analysis of implementation factors in the application of building information modeling (BIM) in construction projects: Enhancing disaster preparedness Lathifia Qolbina; Beatrix, Michella
Calamity: A Journal of Disaster Technology and Engineering Vol. 2 No. 2: (January) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v2i2.2025.1442

Abstract

Background: Building Information Modeling (BIM) technology is game-changing in the AEC industry. BIM can significantly improve team coordination, construction productivity, project performance, and profits. The conventional construction process, where there are often conflicts between stakeholders regarding the workflow in a job, will change with the application of BIM in construction projects. In the construction sector in Indonesia, the knowledge and experience of construction service provider companies (consultants and contractors) in Indonesia needs to be studied and documented academically to enrich the body of knowledge of BIM implementation. Methods: The data used in this study are primary data obtained through questionnaires.  The data used in this study are quantitative data processed using the Partial Least Square (PLS) method with SmartPLS 4.0 software. Conclusion: From the results of this study, it is concluded that the implementation factor has a significant influence on Building Information Modeling (BIM). Based on the outer model analysis of the SmartPLS 4.0 software, it is found that the greatest influence of the implementation factor relationship on Building Information Modeling (BIM) is 0.757 or it can be said that it is 75.7%. Novelty/Originality of this article: This study provides a unique contribution by focusing on the implementation of Building Information Modeling (BIM) in the Indonesian construction sector, particularly through the lens of construction service providers' knowledge and experience, using a robust quantitative approach with SmartPLS 4.0 to analyze the influence of implementation factors on BIM adoption.
Analysis of the impact of forest fires: Pre-wedding incident of Mount Bromo and its disaster risk Nugraha, Mayabella Puspita
Calamity: A Journal of Disaster Technology and Engineering Vol. 2 No. 2: (January) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v2i2.2025.1508

Abstract

Background: Forests play a crucial role in sustaining the environment, economy, and society by acting as carbon sinks that help mitigate climate change and maintain ecosystem balance. However, forest fires remain a growing global concern, including Indonesia. One significant fire occurred in Bromo Tengger Semeru National Park (TNBTS) in 2023, sparked by human negligence during a pre-wedding photoshoot. The fire damaged 1,487 hectares of land and threatened local biodiversity and ecosystems. TNBTS is home to over 1,000 plant species and holds cultural significance for the Tengger Community, who depend on its resources for their livelihoods. The research examines the environmental, economic, and social impacts of fire, using a quantitative research approach. Mentods: The methodology uses quantitative analysis using Landsat 8 imagery to assess fire severity. The Delta Normalized Burn Ratio (dNBR) is used to assess fire damage, while vegetation density is analyzed using the Normalized Difference Vegetation Index (NDVI) to ensure data reliability. Findings: The fire caused significant environmental damage. Economically, the tourism sector was severely affected, with the park’s closure for 13 days leading to an 80% drop in hotel occupancy, resulting in an estimated loss of IDR 89.76 billion. Socially, the Tengger people suffered, as the fire damaged sacred sites and disrupted their cultural practices. Also, it increases the stress and anxiety of society that depends on tourism and agriculture. Public concern about the incident underscored the importance of responsible behavior in national parks, this can be seen by Google Trend. Conclusion: Although signs of recovery are evident, the long-term ecological and economic impacts require continued assessment and mitigation efforts to ensure the sustainable future of TNBTS. Novelty/Originality of this article: This article offers a novel analysis of the Bromo Tengger Semeru National Park fire by integrating remote sensing data with environmental, economic, and social impacts, including the unique use of Google Trends to measure public concern.
Erosion levels and comparison of erosion estimation methods in watersheds: Disaster risk assessment and environmental engineering approaches Fahmi, Faizal Nur
Calamity: A Journal of Disaster Technology and Engineering Vol. 2 No. 2: (January) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v2i2.2025.1617

Abstract

Background: The Blongkeng Watershed is part of the Progo Watershed, located on the north-western slopes of Mount Merapi. The damage to vegetation and land degradation due to volcanic activity from Mount Merapi has led to surface runoff and erosion on the western slopes of the mountain. The aim of this study is to compare the erosion estimation models of morphometry and USLE. Methods: Morphometric parameters were obtained from the River Network Map and Digital Elevation Model (DEM) map, then analyzed quantitatively, and rankings were applied to determine the erosion sensitivity ranking within the watershed. The USLE erosion values were derived from factors affecting erosion, including rainfall erosivity, soil erodibility, slope, and land cover factors. Findings: The erosion levels in the Blongkeng Watershed, calculated using the USLE method, show high values in the upper Sub-Watersheds, ranging from 7.21 to 5.94 tons/ha/year. The comparison between the morphometric and USLE erosion estimation methods yields rankings of erosion levels in the Blongkeng Watershed. The rankings are the same in the upper part of the Blongkeng Watershed, while differences in rankings appear in the middle and lower regions. Conclusion: These differences are likely due to the different input data of the two erosion estimation models and the inclusion of morphometric parameters that may not be suitable for the Blongkeng Watershed ranking calculation. The similarity in rankings in the upper regions is likely due to the area being dominated by slopes greater than 8%. Novelty/Originality of this article: The novelty of this research lies in offering a measurement and comparison of erosion levels.

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