Erosion exposure assessment of infrastructure in Alaska coastal communities

DGGS Report of Investigation 2021-3, Erosion exposure assessment of infrastructure in Alaska coastal communities, provides estimated erosion exposure for 48 communities from the Bering to the Beaufort seas. The Division of Geological & Geophysical Surveys conducted a shoreline change assessment to forecast 20-, 40-, and 60-year erosion estimates using the Digital Shoreline Analysis System (DSAS; Himmelstoss and others, 2018), and estimated the replacement cost of infrastructure in the forecast area. The geodatabase includes mean erosion forecasts and maximum uncertainties for 38 communities along with infrastructure locations and classification derived from Alaska Division of Community & Regional Affairs digital mapping products (DCRA, 2021) for 44 communities. All files are available from the DGGS website: http://doi.org/10.14509/30672《美国地质与地球物理调查局（Division of Geological & Geophysical Surveys，DGGS）2021-3号调查报告：阿拉斯加沿海社区基础设施侵蚀暴露评估》针对白令海至波弗特海沿线的48个社区，提供了基础设施侵蚀暴露的估算结果。 该调查由美国地质与地球物理调查局（DGGS）主导，采用数字岸线分析系统（Digital Shoreline Analysis System，DSAS；Himmelstoss等，2018）开展岸线变化评估，以预测20年、40年及60年尺度的侵蚀量估算值，并测算预测区域内基础设施的重置成本。 本数据集配套的地理数据库涵盖38个社区的平均侵蚀预测结果与最大不确定性范围，同时包含针对44个社区、基于阿拉斯加社区与区域事务部（Alaska Division of Community & Regional Affairs，DCRA）2021年数字制图产品（DCRA, 2021）提取的基础设施位置与分类信息。 所有相关文件均可从DGGS官方渠道获取：http://doi.org/10.14509/30672。