High resolution vector polylines of the Antarctic coastline

Abstract Coastline for Antarctica created from various mapping and remote sensing sources, consisting of the following coast types: 'ice coastline', 'rock coastline', 'grounding line', 'ice shelf and front', 'ice rumple', and 'rock against ice shelf', provided as a surface attribute. Covering all land and ice shelves south of 60°S. Suitable for topographic mapping and analysis. High resolution versions of ADD data are suitable for scales larger than 1:1,000,000. The largest suitable scale is changeable and dependent on the region. Changes in v7.12 include updates to the ice shelves around Alexander Island, such as Wilkins, George VI and Bach Ice Shelves; the coastline around Thwaites and Pine Island Glaciers, Bryan Coast and Abbot Ice Shelf, and changes to the coast at Vaughan Inlet. Offshore islands to the north of Alexander Island were also added to the data. Data compiled, managed and distributed by the Mapping and Geographic Information Centre and the UK Polar Data Centre, British Antarctic Survey on behalf of the Scientific Committee on Antarctic Research. Further information and useful links Map projection: WGS84 Antarctic Polar Stereographic, EPSG 3031. Note: by default, opening this layer in the Map Viewer will display the data in Web Mercator. To display this layer in its native projection use an Antarctic basemap. The currency of this dataset is May 2026 and will be reviewed every 6 months. This feature layer will always reflect the most recent version. For more information on, and access to other Antarctic Digital Database (ADD) datasets, refer to the SCAR ADD data catalogue. A related medium resolution dataset is also published via Living Atlas, as well medium and high resolution polygon datasets. For background information on the ADD project, please see the British Antarctic Survey ADD project page. Lineage Dataset compiled from a variety of Antarctic map and satellite image sources. The dataset was created using ArcGIS and QGIS GIS software programmes and has been checked for basic topography and geometry errors, but does not contain strict topology. Quality varies across the dataset, certain areas where high-resolution source data were available are suitable for large-scale maps, whereas other areas are only suitable for smaller scales. Each line has attributes detailing the source, which can give the user further indications of its suitability for specific uses. Attributes also give information, including surface (e.g. grounding line, ice coastline, ice shelf front) and revision date (revdate), accompanied by revprec - date precision, either day, month, or year. Compiled from sources ranging in time from 1990s-2026 - individual lines contain exact source dates in sourcedate field with the corresponding sourceprec field. Citation Gerrish, L., Ireland, L., Fretwell, P., Cooper, P., & Skachkova, A. (2026). High resolution vector polylines of the Antarctic coastline (Version 7.12) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/dbaf29f5-c8dc-4e79-aeb1-1df316e951ec If using for a graphic or if short on space, please cite as 'data from the SCAR Antarctic Digital Database, 2026'本数据集为基于多类测绘与遥感数据源构建的南极矢量海岸线数据集，包含以下海岸类型：冰海岸线、岩质海岸线、接地线、冰架与冰架前缘、冰褶丘以及冰架依附岩岸，以表面属性形式提供。数据集覆盖南纬60°以南的全部陆地与冰架，适用于地形测绘与分析。南极数字数据库（Antarctic Digital Database, ADD）的高分辨率版本适用于比例尺大于1:100万的应用，最大适用比例尺因区域而异。 版本7.12的更新内容包括：亚历山大岛周边的冰架（如威尔金斯冰架、乔治六世冰架与巴赫冰架）、思韦茨冰川与派恩岛冰川周边海岸线、布莱恩海岸与阿博特冰架的海岸线更新，以及沃恩湾的海岸形态调整；同时新增了亚历山大岛以北的近海岛屿数据。 本数据集由英国南极调查局（British Antarctic Survey, BAS）的测绘与地理信息中心及英国极地数据中心代表南极研究科学委员会（Scientific Committee on Antarctic Research, SCAR）进行编制、管理与分发。 更多信息与有效链接：地图投影采用WGS84南极极球面投影（EPSG 3031）。注意：默认情况下，在地图查看器中打开该图层时，数据将以Web墨卡托投影显示；若需以原生投影显示该图层，请使用南极底图。本数据集的最新更新时间为2026年5月，每6个月进行一次审核。本要素图层将始终展示最新版本。如需了解并获取其他南极数字数据库（ADD）数据集，请查阅SCAR ADD数据目录。相关的中等分辨率数据集、中等与高分辨率多边形数据集也已通过Living Atlas发布。如需了解ADD项目的背景信息，请访问英国南极调查局ADD项目页面。 数据溯源：本数据集基于多种南极地图与卫星影像数据源编制，采用ArcGIS与QGIS地理信息系统软件构建，已针对基础地形与几何错误进行检查，但未包含严格拓扑结构。数据集的质量存在区域差异：部分拥有高分辨率源数据的区域可适用于大比例尺制图，而其余区域仅适用于小比例尺制图。每条线要素均包含详细的源属性，可为用户判断其是否适用于特定用途提供进一步依据。属性信息还包括地表类型（如接地线、冰海岸线、冰架前缘）、修订日期（revdate）以及对应的日期精度字段revprec，精度可分为日、月或年。数据集的源数据时间跨度为20世纪90年代至2026年，每条线要素的sourcedate字段中包含精确的源数据日期，以及对应的sourceprec精度字段。 引用格式：Gerrish, L., Ireland, L., Fretwell, P., Cooper, P., & Skachkova, A. (2026). 南极海岸线高分辨率矢量折线（版本7.12）[数据集]. NERC EDS英国极地数据中心. https://doi.org/10.5285/dbaf29f5-c8dc-4e79-aeb1-1df316e951ec 若用于制图或版面受限，可简化引用为：'data from the SCAR Antarctic Digital Database, 2026'