National assessment of shoreline change—Summary statistics for updated vector shorelines and associated shoreline change data for the Gulf of Mexico and Southeast Atlantic coasts
National assessment of shoreline change—Summary statistics for updated vector shorelines and associated shoreline change data for the Gulf of Mexico and Southeast Atlantic coasts
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国家海岸线变化评估——墨西哥湾和东南大西洋海岸更新矢量海岸线和相关海岸线变化数据的汇总统计
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
E. Thieler
中科院分区：
文献类型：
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作者：
E. Himmelstoss;M. Kratzmann;E. Thieler
作为美国地质调查局国家海岸线变化评估项目的一部分，墨西哥湾和美国东南大西洋地区的海岸线长期变化率已经更新。使用额外的海岸线位置数据来计算费率，而以前的变化率评估仅包括给定地点的四个海岸线位置。长期岸线变化率还纳入了替代基准面偏差校正，以解释基于替代基准的高水位线岸线相对于基于基准面的平均高水位岸线的单向陆上偏差。与长期平均比率相关的不确定性的计算也已更新，以与国家评估项目其他研究区域使用的改进方法相匹配。与这两个区域以前的评估相比，这里报告的平均费率的不确定性有所减少。
Long-term rates of shoreline change for the Gulf of Mexico and Southeast Atlantic regions of the United States have been updated as part of the U.S. Geological Survey’s National Assessment of Shoreline Change project. Additional shoreline position data were used to compute rates where the previous rate-of-change assessment only included four shoreline positions at a given location. The longterm shoreline change rates also incorporate the proxy-datum bias correction to account for the unidirectional onshore bias of the proxy-based high water line shorelines relative to the datum-based mean high water shorelines. The calculation of uncertainty associated with the long-term average rates has also been updated to match refined methods used in other study regions of the National Assessment project. The average rates reported here have a reduced amount of uncertainty relative to those presented in the previous assessments for these two regions.