High resolution vector polylines of the Antarctic coastline

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 checks, but does not contain strict topology. Quality varies across the dataset and 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. Compiled from sources ranging in time from 1990s-2020 - individual lines contain exact source dates.

本数据集整合自多种南极地图及卫星影像数据源。本数据集采用ArcGIS与QGIS两款地理信息系统（Geographic Information System，GIS）软件制作，已完成基础地形与几何校验，但未包含严格拓扑结构。数据集整体质量存在差异：部分区域具备高分辨率源数据，可用于制作大比例尺地图；其余区域仅适用于小比例尺地图。每条矢量线要素均附带详细的数据源属性，可帮助用户进一步评估其适配的特定应用场景。属性信息还涵盖“地表类型”（如冰盖接地线、冰海岸线、冰架前缘）以及修订日期。本数据集的数据源时间跨度为1990年代至2020年，单条矢量线要素均标注了确切的数据源获取日期。