Coastal Vulnerability Index (CVI) for Gateway National Recreation Area (gate_shore)

A coastal vulnerability index (CVI) was used to map the relative vulnerability of the coast to future sea-level rise within Gateway National Recreation Area in New York and New Jersey. 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.

本研究采用海岸脆弱性指数（coastal vulnerability index，CVI），针对纽约州与新泽西州盖特韦国家休闲区内海岸应对未来海平面上升的相对脆弱性开展制图工作。该指数依据各因子对海平面上升相关海岸变化的物理贡献程度，对以下要素进行等级划分：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。研究将各输入变量的等级评分进行合并，并为覆盖该休闲区的1分钟网格单元计算指数值。该指数可识别出受海平面上升物理影响最为显著的区域。本方法将海岸系统对变化的易感性与其适应环境变化的自然能力相结合，生成了一种量化（尽管为相对量化）的休闲区应对海平面上升影响的自然脆弱性评估指标。本数据集包含的海岸脆弱性指数及相关数据，可为科研人员与休闲区管理者提供一种用于评估与长期规划的客观技术手段。