Tidal Dataset - CAMRIS - Diurnal Tidal Range

This dataset contains maps showing the principal attributes of tides around the Australian coast. It has been derived from data published in the Australian National Tide Tables.\n\nFormat: shapefile.\n\nQuality\nScope: Dataset\nExternal accuracy: +/- one degree. \nNon Quantitative accuracy: Data are assumed to be correct. \nThree datasets describe tidal information around Australia: Cover_Name, Item_Name, Item_Description: TIDETYP, TIDAL_RANGE_(M), Diurnal tidal range in metres.\nConceptual consistency: Coverages are topologically consistent. No particular tests conducted by ERIN.\nCompleteness omission: Complete for the Australian continent.\nLineage: ERIN:\nData was projected to geographics using the WGS84 datum and spheroid, to be compatible for the Australian Coastal Atlas. The digital datsets were attributed using the information held in the legend (.key) files.\n\nCSIRO:\nAll CAMRIS data were stored in VAX files, MS-DOS R-base files and as a microcomputer dataset accessible under the LUPIS (Land Use Planning Information System) land allocation package. CAMRIS was established using SPANS Geographic Information System (GIS) software running under a UNIX operating system on an IBM RS 6000 platform. A summary follows of processing completed by the CSIRO:\n1. r-BASE: Information imported into r-BASE from a number of different sources (ie Digitised, scanned, CD-ROM, NOAA World Ocean Atlas, Atlas of Australian Soils, NOAA GEODAS archive and The Complete Book of Australian Weather).\n2. From the information held in r-BASE a BASE Table was generated incorporating specific fields.\n3. SPANS environment: Works on creating a UNIVERSE with a geographic projection - Equidistant Conic (Simple Conic) and Lambert Conformal Conic, Spheroid: International Astronomical Union 1965 (Australia/Sth America); the Lower left corner and the longitude and latitude of the centre point.\n4. BASE Table imported into SPANS and a BASE Map generated.\n5. Categorise Maps - created from the BASE map and table by selecting out specified fields, a desired window size (ie continental or continent and oceans) and resolution level (ie the quad tree level).\n6. Rasterise maps specifying key parameters such as: number of bits, resolution (quad tree level 8 lowest - 16 highest) and the window size (usually 00 or cn).\n7. Gifs produced using categorised maps with a title, legend, scale and long/lat grid.\n8. Supplied to ERIN with .bil; .hdr; .gif; Arc export files .e00; and text files .asc and .txt formats.\n9. The reference coastline for CAMRIS was the mean high water mark (AUSLIG 1:100 000 topographic map series).

本数据集包含展示澳大利亚沿岸潮汐主要属性的地图，其数据源自《澳大利亚国家潮汐表》所刊载的内容。

格式：shapefile。

质量
范围：数据集
外部精度：±1度
非定量精度：数据被假定为正确
描述澳大利亚沿岸潮汐信息的三个数据集：Cover_Name、Item_Name、Item_Description：TIDETYP、TIDAL_RANGE_(M)、以米为单位的日潮差。
概念一致性：覆盖范围具有拓扑一致性，ERIN未开展特定测试。
完整性遗漏：澳大利亚大陆范围内数据完整。
数据溯源：ERIN：
数据已通过WGS84基准面与椭球体投影至地理坐标系，以适配《澳大利亚海岸图集》。数字数据集的属性信息源自图例（.key）文件所包含的内容。

CSIRO：
所有CAMRIS数据均存储于VAX文件、MS-DOS R-base文件中，同时作为微型计算机数据集可通过土地利用规划信息系统（LUPIS）的土地分配包访问。CAMRIS基于运行于IBM RS 6000平台UNIX操作系统上的SPANS地理信息系统（GIS）软件构建。
1. r-BASE：信息从多种不同来源导入r-BASE，包括数字化数据、扫描数据、CD-ROM、《NOAA世界海洋图集》、《澳大利亚土壤图集》、NOAA GEODAS档案及《澳大利亚天气全书》。
2. 基于r-BASE中的信息生成包含特定字段的基础表（BASE Table）。
3. SPANS环境：构建包含地理投影的UNIVERSE——等距圆锥投影（简圆锥投影）与兰伯特正形圆锥投影，椭球体采用国际天文学联合会1965年版（适用于澳大利亚/南美洲）；同时定义左下角及中心点的经纬度。
4. 将基础表导入SPANS并生成基础地图（BASE Map）。
5. 分类地图——基于基础地图与表，通过筛选特定字段、设定目标窗口大小（如大陆范围或大陆与海洋范围）及分辨率级别（如四叉树级别）生成。
6. 栅格化地图时需指定关键参数，包括位数、分辨率（四叉树级别8为最低，16为最高）及窗口大小（通常为00或cn）。
7. 基于分类地图生成GIF格式图像，包含标题、图例、比例尺及经纬度网格。
8. 向ERIN提供的数据格式包括.bil、.hdr、.gif、Arc导出文件.e00，以及文本文件.asc与.txt。
9. CAMRIS的参考海岸线为平均高潮位线（源自AUSLIG 1:100000地形图系列）。