Mapping Multi-hazards in Coastal Cities Using Geospatial Techniques

Abstract Submission: Coastal cities face threats from both natural and anthropogenic activities. Issues, like coastal erosion, storm surges, rising sea-levels, salinization, and flooding, especially affect underserved populations in low-lying, high-risk areas. This study assesses the vulnerability of US cities, particularly those along the Gulf of Mexico, by superimposing hazards with socio-economic factors. We compile datasets from multiple sources and create GIS layers. We use the Coastal Vulnerability Index, which combines measures of physical and social vulnerability. Geospatial techniques help us map individual and multi-hazards, using satellite imagery, topographic data, and hydrological/climate model outputs. Our findings provide valuable tools for planners and policymakers, enabling informed decision-making in disaster mitigation, land-use planning, and efforts to strengthen resilience in vulnerable coastal communities.

Learning Objectives/Expected Outcome (Optional) : The learning objectives of this research focus on understanding the impact of multi-hazards on coastal cities and their populations, particularly the underserved communities. By investigating how coastal erosion, storm surges, rising sea levels, salinization, and flooding intersect, the study seeks to provide a comprehensive analysis of vulnerability in these high-risk areas. A key objective taken here is to apply geospatial techniques, like GIS and satelliet imagery, to map both individual hazards as well as the combined effects. This research also aims to integrate socio-economic data with physical vulnerability assessments, using the Coastal Vulnerability Index (CVI) to measure risk levels and identify particularly vulnerable areas.