Objective: This paper explores compounding challenges for older coastal populations due to accelerated sea level rise at the nexus of physical hazard exposure and place-based socioeconomic and health considerations.
Methods: This study applies geospatial analysis to assess the spatial distribution of older adults (age 65+) and their socioeconomic characteristics in Miami-Dade County in Florida. Next, it uses logistic regression to evaluate the socioeconomic determinants of block groups with 20% or more of residents age 65 and older at 3 feet of sea level rise compared to the other block groups in Miami-Dade.
Results: The results show that this study area has an older population clustered in flood-prone locations along the shoreline. The block groups with more than 20% of older adults and sea level rise risk have higher homeownership and vacancy rates, a higher percentage of homes constructed before 1980, and more older individuals who live alone.
Conclusion: This study identifies place-based compounding factors undermining the ability of older residents to adequately cope with accelerated sea level rise flooding in coastal urban locations. Namely, owning an older home in a declining neighborhood and living alone can trap older individuals in place and increase their flood risk.
Keywords: aging; coastal; flooding; older adults; sea level rise.