Digital Shoreline Analysis System version 4.3 transects and long-term linear regression shoreline change statistics for all data available within the Martha's Vineyard coastal region including the Vineyard Sound-, Nantucket Sound- and Atlantic Ocean- facing coasts of Martha's Vineyard and Nomans La

Due to continued coastal population growth and increased threats of erosion, current data on trends and rates of shoreline movement are required to inform shoreline and floodplain management. The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates at 40-meter intervals along ocean-facing sections of the Massachusetts coast. The Coastal and Marine Geology Program of the U.S. Geological Survey (USGS) in cooperation with the Massachusetts Office of Coastal Zone Management, has compiled reliable historical shoreline data along open-facing sections of the Massachusetts coast under the Massachusetts Shoreline Change Mapping and Analysis Project 2013 Update. Two oceanfront shorelines for Massachusetts (approximately 1,800 km) were (1) delineated using 2008/09 color aerial orthoimagery, and (2) extracted from topographic LIDAR datasets (2007) obtained from NOAA's Ocean Service, Coastal Services Center. The new shorelines were integrated with existing Massachusetts Office of Coastal Zone Management and USGS historical shoreline data in order to compute long- and short-term rates using the latest version of the Digital Shoreline Analysis System (DSAS).由于沿海人口持续增长与海岸侵蚀威胁加剧，当前亟需海岸线变化趋势与速率的相关数据，以支撑海岸线及洪泛区的管理决策。马萨诸塞州海岸带管理办公室（Massachusetts Office of Coastal Zone Management）于1989年启动海岸线变化项目，旨在识别沿海易受侵蚀区域。2001年，项目补充了1994年的海岸线数据，用以计算马萨诸塞州沿海面向大洋区段、间隔40米处的长期与短期海岸线变化速率。 美国地质调查局（U.S. Geological Survey, USGS）海岸与海洋地质项目组与马萨诸塞州海岸带管理办公室合作，在《2013年马萨诸塞州海岸线变化制图与分析项目更新》框架下，整理了马萨诸塞州沿海面向大洋区段的可靠历史海岸线数据集。针对马萨诸塞州约1800公里的沿海岸线，（1）通过2008/2009年彩色航空正射影像完成海岸线勾画，（2）从美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）海洋服务局海岸服务中心获取的2007年地形激光雷达（LIDAR）数据集中提取海岸线。新生成的海岸线数据已与马萨诸塞州海岸带管理办公室及USGS的现有历史海岸线数据整合，以便通过最新版数字海岸线分析系统（Digital Shoreline Analysis System, DSAS）计算长期与短期海岸线变化速率。