Integrated Disaster Vulnerability and Mitigation Strategies for Gampong Deah Raya Coastal Settlement, Banda Aceh, Indonesia
Keywords:
Mitigation Strategy, Coastal Areas, Disaster Vulnerability, Tsunami, LiquefactionAbstract
Coastal settlements in Banda Aceh face compound exposure to earthquakes, tsunamis, and liquefaction due to their proximity to an active subduction zone, low-lying topography, and dense coastal development. This study aims to assess disaster hazard exposure, examine community risk perception, and formulate mitigation strategies for Gampong Deah Raya, a coastal settlement in Banda Aceh, Indonesia. A descriptive quantitative case-study approach was applied using spatial interpretation of disaster hazard maps, household survey data collected through a Likert-scale questionnaire, and descriptive statistical analysis in SPSS. The results show that Gampong Deah Raya is characterized by high earthquake and tsunamis, while liquefaction potential ranges from moderate to high in several parts of the area. Although residents demonstrate a relatively high level of risk awareness, non-structural preparedness and structural mitigation remain only moderately developed. This indicates a gap between risk perception and practical readiness at the community and settlement levels. Based on these findings, an integrated mitigation framework is proposed that combines community-based preparedness, routine evacuation drills, risk communication, early warning systems, evacuation routes, vertical evacuation buildings, ground improvement in liquefaction-prone zones, and coastal greenbelt protection. The study highlights that disaster mitigation in coastal settlements should not rely on a single intervention, but instead integrate physical, social, and spatial planning measures to reduce risk more effectively. The findings provide practical implications for coastal settlement planning and disaster resilience improvement in Banda Aceh and similar hazard-prone coastal areas.
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