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Alfi Rahman
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Tsunami and Disaster Mitigation Research Center (TDMRC), Universitas Syiah Kuala Jl. Hamzah Fanshuri No 8, Kopelma Darussalam, Banda Aceh 23111
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International Journal of Disaster Management (IJDM)
Published by Universitas Syiah Kuala
ISSN : 2808439X     EISSN : 25274341     DOI : -
Core Subject :
The International Journal of Disaster Management (IJDM) is an international, peer-reviewed, open-access journal dedicated to advancing knowledge and practice in disaster management, disaster risk reduction, and resilience. The journal provides an interdisciplinary platform for researchers, practitioners, policymakers, and professionals to address contemporary disaster risks and their implications for communities and society. IJDM publishes original research and scholarly contributions covering disaster risk reduction and management; disaster preparedness, response, recovery, and reconstruction; disaster governance and policy; disaster and risk communication; early warning systems; hazard, vulnerability, and risk assessment; community-based disaster risk reduction; climate-related hazards and adaptation; community resilience; indigenous and local knowledge; social, cultural, and psychosocial dimensions of disasters; disaster education and capacity development; geospatial and technological applications; resilient infrastructure; and interdisciplinary and transdisciplinary approaches to disaster studies. The journal particularly encourages research that connects scientific knowledge with policy and practice and contributes to reducing disaster risk and strengthening resilience across diverse geographical, social, and cultural contexts.
Arjuna Subject : -
Articles 7 Documents
 1 
Utilization of realtime GSMaP satellite data for flood early warning in Bekasi watershed using UPerRRM Nurul Fajar Januriyadi; Idham Riyando Moe; Arlyn Aristo Cikmit; Wahyu Sejati
International Journal of Disaster Management Vol. 9 No. 1 (2026)
Publisher : Tsunami and Disaster Mitigation Research Center (TDMRC), Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/ijdm.v9.i1.377

Abstract

Flooding in the Bekasi River Basin, West Java, Indonesia, is now more frequent and destructive. This is due to rapid urbanisation, land‑cover change, and intensified rainfall. Conventional early warning systems rely on sparse rain‑gauge networks and manual reporting. This leads to limited coverage and delayed responses, such as during the March 3–4, 2025 flood event. To address these issues, this study presents a real‑time, satellite‑enabled flood forecasting framework. It integrates precipitation estimates from GSMaP with the Universitas Pertamina Rainfall–Runoff Model. Near‑real‑time GSMaP_NOW and GSMaP_NRT products, at 0.1° spatial resolution and hourly intervals, are assimilated into a semi‑distributed hydrological model. This model runs continuously to generate 24‑hour river discharge forecasts at multiple monitoring locations. When applied to the March 2025 flood event, the simulated discharge captured the timing of flood onset and escalation. Alert Level‑1 thresholds were identified about one hour in advance at Cileungsi station. At the watershed scale, upstream rainfall detection gave a five to six-hour lead time before downstream flooding. These results show that satellite‑based rainfall monitoring combined with real‑time hydrological modelling can support operational flood warning in data‑sparse urban watersheds.
Evacuation behaviors and open space utilization: A case study of Institut Teknologi Sumatera students during earthquakes Takako Kohori; Anggi Mardiyanto
International Journal of Disaster Management Vol. 9 No. 1 (2026)
Publisher : Tsunami and Disaster Mitigation Research Center (TDMRC), Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/ijdm.v9.i1.392

Abstract

This study examines the role of open spaces as evacuation sites during disasters caused by natural hazards in Indonesia, a country highly exposed to earthquakes, floods, and tsunamis. Urban open spaces are considered not only essential for everyday urban activity but also critical refuges during emergencies. A cross-sectional online survey was conducted with 109 students from the Institut Teknologi Sumatera to explore evacuation behavior and related perceptions. The survey comprised three components: (1) disaster knowledge and experience, including prior education and evacuation drills; (2) perceived safety of residential environments; and (3) evacuation strategies, including timing, site selection, and mode of movement. The findings indicate that during earthquakes, most respondents immediately evacuate outdoors and tend to remain at their initial location rather than relocate over time. Results also elucidate limited hands-on evacuation drill experience despite prior disaster education, highlighting gaps between knowledge and practical preparedness that may constrain the effective identification and use of safe evacuation sites. Open spaces function as multifunctional environments, providing protection from structural hazards while serving as informal hubs for information and social support. The study underscores the need for integrated urban planning and preparedness strategies that strengthen both accessible open-space provision and community-based evacuation capacity to enhance urban disaster resilience.
Slope instability and sediment contribution during drawdown: Implications for sediment management and disaster risk in Keuliling Reservoir, Indonesia Azmeri Azmeri; Ghofar Hadi; Halida Yunita
International Journal of Disaster Management Vol. 9 No. 1 (2026)
Publisher : Tsunami and Disaster Mitigation Research Center (TDMRC), Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/ijdm.v9.i1.580

Abstract

Slope instability along reservoir banks is an important but often overlooked source of sediment entering reservoirs during water-level fluctuations. Previous sedimentation assessments in Keuliling Reservoir mainly considered watershed erosion and did not explicitly quantify the contribution of reservoir-bank slope failures. This study investigates the potential sediment contribution from unstable reservoir slopes induced by water-level drawdown. Field observations, soil sampling, and laboratory shear tests were conducted in three landslide-prone zones around the Keuliling Reservoir, Aceh Province. Slope stability was evaluated using a limit equilibrium framework under different water-level drawdown scenarios ranging from 0.2 to 2.4 m. The results indicate that slope stability decreases significantly as water levels decline. Zones A and C exhibit unstable conditions with average safety factors of 0.52 and 0.99, respectively, while Zone B remains relatively stable with an average safety factor of 2.92. Potential sediment contribution from unstable slopes was estimated using a sediment transport approximation adapted from classical bed-load theory to represent possible mobilized material during slope failure. The analysis shows that reservoir drawdown can substantially increase slope instability and may contribute additional sediment to the reservoir storage. These findings highlight the importance of incorporating reservoir-bank instability into sediment management, operational decision-making, and disaster risk reduction strategies in reservoir systems. The results provide useful insights for reservoir operation planning, particularly in establishing safer drawdown rates and slope monitoring strategies.
Inherited capacity and emerging vulnerability: A communal stilt house under increasing flood exposure in Samarinda, Indonesia Zakiah Hidayati; Ardhya Nareswari
International Journal of Disaster Management Vol. 9 No. 1 (2026)
Publisher : Tsunami and Disaster Mitigation Research Center (TDMRC), Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/ijdm.v9.i1.885

Abstract

Seasonal and upstream-induced flooding in Samarinda, Indonesia, has increasingly affected cultural heritage structures, including the Lamin Pemung Tawai in Pampang Village. Existing studies on stilt dwellings have primarily focused on riverine, coastal, or marsh-based environments and generally interpret elevation as an intentional adaptation to flood hazards. This study investigates a forest-based communal stilt house whose elevation was not originally intended for flood adaptation but now functions as an inherited capacity under increasing flood exposure. Using the Hazard–Exposure–Vulnerability–Capacity (HEVC) framework, the study combines field observations, semi-structured interviews with 11 respondents conducted over 15 interview sessions, and Justified Graph spatial analysis. The findings reveal vulnerabilities associated with water accumulation beneath the structure, uneven structural reinforcement, low-clearance underfloor spaces, and the absence of formal emergency procedures. At the same time, the building's elevated timber structure, open underfloor configuration, accessible spatial layout, and strong social capital provide significant adaptive capacities. The Lamin's central hall and multi-access spatial configuration also facilitate collective gathering, temporary refuge, and emergency coordination during flood events. The study demonstrates how a forest-based communal stilt house can acquire adaptive functions while maintaining its cultural identity, highlighting the potential of vernacular heritage structures to serve as community-based disaster risk reduction assets under changing environmental conditions.
Determinants of tsunami evacuation intention in Banda Aceh: Institutional trust, preparedness behaviour, and religious perception Alfi Rahman; Ezri Hayat; Nanda Ayu Puspita; Rizanna Rosemary; Wiwit Artika; Syahrul Ridha
International Journal of Disaster Management Vol. 9 No. 1 (2026)
Publisher : Tsunami and Disaster Mitigation Research Center (TDMRC), Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/ijdm.v9.i1.1203

Abstract

Two decades after the 2004 Indian Ocean Tsunami, Banda Aceh remains highly vulnerable to tsunami hazards, making evacuation preparedness a critical component of disaster risk reduction. This study examines factors influencing tsunami evacuation intention among residents of Banda Aceh using a convergent mixed-methods design integrating survey data (N = 381) and focus group discussions (n = 35). Quantitative data were analysed using descriptive statistics, Pearson correlations, and binary logistic regression, while qualitative data were examined through inductive thematic analysis. The results show that trust in the tsunami early warning siren system significantly predicts immediate evacuation intention (OR = 1.39, p = .020). Descriptive findings also reveal preparedness gaps, including low participation in tsunami drills and limited ownership of emergency preparedness kits. Qualitative insights further highlight the influence of social norms, religious interpretations of disasters, and institutional trust in shaping evacuation decisions. These findings suggest that strengthening tsunami preparedness requires integrated approaches combining reliable early warning systems, culturally sensitive risk communication, and community-based preparedness initiatives.
Groundwater stress in Dhakua Union, Bangladesh: Community perceptions and hydrometeorological evidence Shahjahan Sheikh; Md Abdur Rahim; Md. Faisal; Most. Nusrat Binte Nur; Papri Hazra; Ayesha Siddiqua; Raman Kumar Biswas; Sanjida Aktar
International Journal of Disaster Management Vol. 9 No. 2 (2026)
Publisher : Tsunami and Disaster Mitigation Research Center (TDMRC), Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/ijdm.v9.i2.1775

Abstract

Groundwater depletion is increasingly problematic in many parts of Bangladesh due to heavy reliance on aquifers for domestic, industrial, and irrigation needs. While prior studies have examined groundwater levels, extraction, recharge, and quality, little research has integrated community experiences with hydrometeorological data to understand vulnerabilities, disaster risks, and resilience related to groundwater depletion. Thus, this research aims to fill this gap by exploring the groundwater crisis in Dhakua Union, Tarakanda Upazila, Mymensingh District, using a community-based and hydrometeorological approach. We collected field data in 2023 from 100 purposefully selected households, supplemented with key informant interviews and focus group discussions. We also gathered hydrometeorological data (rainfall and temperature) for the period of 1955-2021 and analyzed the trends. Among survey participants, 100% reported increased tube-well depths and excessive groundwater withdrawal, 97% reported inappropriate withdrawal techniques, 94% reported less rainfall, and 90% attributed the crisis to intensive irrigation. The hydrometeorology study found an average annual rainfall of 2159.79 mm for 1955-2021, with varied rainfall patterns; average maximum and minimum temperatures were 33.40°C and 17.26°C, respectively. These climatic changes, coupled with excessive groundwater extraction and limited surface water, may further diminish recharge and threaten water security. The findings imply that groundwater depletion in Dhakua Union affects resource management, water security, and disaster resilience. Effective management requires evidence-based strategies, reduced dependence on groundwater, improved surface water and recharge practices, public awareness, climate adaptation, and institutional involvement.
Disaster literacy and self-efficacy in flood preparedness: evidence from Aceh Tamiang, Indonesia Muhammad Mahyaruddin; Hizir Sofyan; Marthoenis
International Journal of Disaster Management Vol. 9 No. 2 (2026)
Publisher : Tsunami and Disaster Mitigation Research Center (TDMRC), Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/ijdm.v9.i2.2440

Abstract

Floods are the most frequent natural disaster in Aceh Tamiang Regency, Indonesia, most recently causing severe loss of life during the November 2025 flash flood associated with Tropical Cyclone Senyar (101 fatalities and 252,623 evacuees; BNPB, updated 10 December 2025). Although disaster literacy and self-efficacy are established predictors of preparedness behavior, most prior studies examined them separately, leaving unclear how much they jointly explain once modeled as latent constructs. This study evaluated the measurement model and analyzed the relationship of disaster literacy and self-efficacy with flood disaster preparedness behavior in Aceh Tamiang Regency. Using a quantitative cross-sectional design, data were collected from 302 respondents across 12 sub-districts and analyzed using Covariance-Based Structural Equation Modeling (CB-SEM) with item parceling. The measurement model showed adequate validity and reliability, and acceptable overall model fit. Disaster literacy was the stronger correlate of preparedness behavior (β = 0.483, p < .001), followed by self-efficacy (β = 0.234, p < .001); together they explained 35.3% of the variance in preparedness behavior. An exploratory analysis suggested self-efficacy may partially mediate (13.1%) the literacy–preparedness relationship, though this result should be treated as preliminary given the cross-sectional design. These findings suggest that community preparedness programs in Aceh Tamiang may benefit from combining information provision with confidence-building components rather than relying on either alone

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