Coastal Vulnerability Index (CVI) for Fire Island National Seashore (fiis_shore)

A coastal vulnerability index (CVI) was used to map the relative vulnerability of the coast to future sea-level rise within Fire Island National Seashore in New York. The CVI ranks the following in terms of their physical contribution to sea-level rise-related coastal change: geomorphology, regional coastal slope, rate of relative sea-level rise, historical shoreline change rates, mean tidal range and mean significant wave height. The rankings for each input variable were combined and an index value calculated for 1-minute grid cells covering the park. The CVI highlights those regions where the physical effects of sea-level rise might be the greatest. This approach combines the coastal system's susceptibility to change with its natural ability to adapt to changing environmental conditions, yielding a quantitative, although relative, measure of the park's natural vulnerability to the effects of sea-level rise. The CVI and the data contained within this dataset provide an objective technique for evaluation and long-term planning by scientists and park managers.本研究借助海岸脆弱性指数（Coastal Vulnerability Index, CVI），绘制纽约州火岛国家海岸（Fire Island National Seashore）内海岸针对未来海平面上升的相对脆弱性分布图。CVI依据各要素对海平面上升引发的海岸变化的物理贡献程度，对以下因子进行赋值排序：地貌、区域海岸坡度、相对海平面上升速率、历史海岸线变化速率、平均潮差与平均有效波高。将各输入变量的赋值结果进行整合，并为覆盖该公园区域的1分钟网格单元计算指数值。该CVI可识别出海平面上升物理影响可能最为显著的区域。该方法将海岸系统的变化易感性与应对环境变化的自然适应能力相结合，最终得到该公园针对海平面上升影响的自然脆弱性的量化评估结果——尽管该结果仅为相对指标。本CVI及本数据集所收录的数据，可为科研人员与公园管理者开展评估及长期规划提供客观的技术支撑。