GEODATA COAST 100K 2004

GEODATA Coast 100K 2004 is a vector representation of the topographic features depicting Australia`s coastline, and State and Territory borders. Data are derived from the 1:100,000 scale National Topographic Map Series and contains: -Coastline features (as determined by Mean High Water) -Survey Monument Points (survey points used to define State/Territory borders) -State and Territory land borders -Island features (please note: Australian external territories are not shown). The coastline includes the main outline of the land and includes bays, the outer edge of mangroves and closes off narrow inlets and watercourses at or near their mouths. Features of the 2004 release include: -Change of datum to GDA94 -Provision of a national coverage in addition to State/Territory coverages; and Additional points on the SA/VIC border.NOTE: The use of survey data in GEODATA COAST 100K 2004 does not imply that data are suitable for any legal interpretation of State/Territory borders. Product Specifications: Coverage: Supplied as separate State and Territory layers, along with a complete national layer Currency: Varies and is based on reliability date of 1:100,000 scale map Coordinates: Geographical Datum: GDA94 Format: ArcInfo Export, ArcView Shapefile and Mapinfo mid/mif Medium: Free online

GEODATA Coast 100K 2004 是一套用于描绘澳大利亚海岸线及州/领地边界的地形要素矢量数据集。该数据源自1:100,000比例尺国家地形地图系列，包含以下内容：
- 以平均高潮线（Mean High Water）划定的海岸线要素
- 测量控制点（Survey Monument Points，用于界定州/领地边界的测量点位）
- 州与领地陆地边界
- 岛屿要素（请注意：澳大利亚海外领地未在本数据集中展示）。

该海岸线涵盖陆地主体轮廓线、海湾、红树林外缘，并在狭窄入海口及其邻近区域封闭水系。

2004版数据集的更新特性包括：
- 坐标基准转换至GDA94
- 除原有州/领地图层外，新增全国范围覆盖图层；以及
- 南澳（SA）与维多利亚州（VIC）边界新增补充控制点。

注：本数据集所使用的测量数据，并不代表其可用于州/领地边界的任何法律解读。

产品规格如下：
覆盖范围：以独立的州/领地图层形式提供，同时附赠完整的全国图层
现势性：存在差异，基于1:100,000比例尺地图的可靠制作日期确定
坐标系：
地理基准：GDA94
格式：支持ArcInfo Export、ArcView Shapefile以及MapInfo mid/mif格式
介质：免费在线获取