Coastal Topography--Northeast Atlantic Coast, Post-Hurricane Sandy, 2012: Mean-high-water shoreline

Mean-high-water (MHW) shoreline for a portion of the New York, Delaware, Maryland, Virginia, and North Carolina coastlines were derived from lidar data collected following Hurricane Sandy (Sandy was an October 2012 hurricane that made landfall as an extratropical cyclone on the 29th). Data were produced by the U.S. Geological Survey (USGS) from remotely sensed, geographically-referenced elevation measurements collected by Photo Science, Inc. (Delaware, Maryland, Virginia, and North Carolina) and Woolpert, Inc. (Fire Island, New York) using airborne lidar sensors. Storms cause significant shoreline changes and this variation was not removed from these data, showing a highly variable MHW shoreline in many areas.

平均高潮位（mean-high-water, MHW）岸线数据集涵盖纽约、特拉华、马里兰、弗吉尼亚及北卡罗来纳州的部分海岸区域，其数据源自飓风桑迪过后采集的激光雷达（lidar）数据。飓风桑迪为2012年10月生成的飓风，于当月29日以温带气旋形式登陆。本数据集由美国地质调查局（U.S. Geological Survey, USGS）基于遥感地理参考高程测量数据生成，相关测量工作由两家企业完成：Photo Science, Inc. 负责特拉华、马里兰、弗吉尼亚及北卡罗来纳州区域的数据采集，Woolpert, Inc. 则负责纽约火岛区域，二者均采用机载激光雷达传感器开展作业。风暴活动会引发显著的岸线变化，且此类变化未从本数据中剔除，因此诸多区域的平均高潮位岸线呈现出高度多变的特征。