Coastal Vulnerability Index

These data provide a preliminary overview, at a National scale, of the relative susceptibility of the Nation's coast to sea-level rise through the use of a coastal vulnerability index (CVI). This classification is based upon the following variables: geomorphology, regional coastal slope, tide range, wave height, relative sea-level rise and shoreline erosion and accretion rates. The combination of these variables and the association of these variables to each other furnish a broad overview of regions where physical changes are likely to occur due to sea-level rise. The purpose of these data layers is to allow the user to view both the coastal vulnerability index (CVI) and the data from which the CVI is calculated (tides, wave height, relative sea-level rise, coastal slope, geomorphology, and shoreline erosion and accretion rate) for the U.S. Atlantic, Gulf, and Pacific Coasts. The CVI provides insight into the relative potential for coastal change due to future sea-level rise. The maps and data presented here can be viewed in at least two ways: 1) as a base for developing a more complete inventory of variables influencing the coastal vulnerability to future sea-level rise to which other elements can be added as they become available; and 2) as an example of the potential for assessing coastal vulnerability to future sea-level rise using objective criteria.

本数据集提供了全国范围内沿海地区对海平面上升相对敏感性的初步概览，通过采用沿海脆弱性指数（CVI）进行分类。该分类基于以下变量：地貌、区域海岸坡度、潮差、波浪高度、相对海平面上升以及海岸线侵蚀和堆积速率。这些变量的组合及其相互之间的关联，为海平面上升可能引起物理变化的区域提供了广泛的概览。这些数据层的目的是使用户能够查看沿海脆弱性指数（CVI）及其计算依据的数据（潮汐、波浪高度、相对海平面上升、海岸坡度、地貌以及海岸线侵蚀和堆积速率）对于美国大西洋、墨西哥湾和太平洋沿岸。CVI为未来海平面上升导致的沿海变化相对潜力提供了洞见。此处呈现的地图和数据可以从至少两种方式进行审视：1）作为发展一个更完整的变量清单的基础，这些变量影响沿海对未来海平面上升的脆弱性，并可随着数据的可用性添加其他元素；2）作为利用客观标准评估未来海平面上升导致的沿海脆弱性的潜力的实例。