Department of Geography, Center for Coastal Studies, Virginia Tech, Blacksburg, VA, USA.
Department of Urban Planning and Public Policy, University of California-Irvine, Irvine, CA, USA.
Disaster Med Public Health Prep. 2023 Jul 31;17:e465. doi: 10.1017/dmp.2023.133.
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.
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.
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.
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.
本文探讨了由于海平面加速上升在物理危害暴露和基于地点的社会经济和健康因素交织下，给沿海老年人口带来的复合挑战。
本研究应用地理空间分析来评估佛罗里达州迈阿密戴德县老年人（65 岁以上）及其社会经济特征的空间分布。然后，使用逻辑回归来评估在海平面上升 3 英尺的情况下，与迈阿密戴德县其他街区组相比，有 20%或以上居民年龄在 65 岁及以上的街区组的社会经济决定因素。
结果表明，该研究区域的老年人口集中在沿海洪水多发地区。有超过 20%的老年人和海平面上升风险的街区组，住房拥有率和空置率较高，建于 1980 年以前的房屋比例较高，独居的老年人比例也较高。
本研究确定了基于地点的复合因素，这些因素破坏了老年居民在沿海城市地区应对加速海平面上升洪水的能力。具体来说，在一个衰落的社区拥有一栋老旧的房子并独自生活，可能会使老年人陷入困境并增加他们的洪水风险。
