Australian Sea Lion Distribution Database - CAMRIS

This database contains information about the distribution and abundance of Australian sea lions around the Australian coastline. It is derived from information held at the former CSIRO Division of Wildlife and Ecology, and provided by Dr. P. Shaughnessy.\n\nFormat: shapefile.\n\nQuality: - \nScope: Dataset. \nExternal accuracy: +/- one degree. \nNon Quantitative accuracy: Variable. \n\nData in the Fur Seal coverage contains: \n---------------------------------- \nLOCATION = The physical location of Fur Seal. \nDATE = Date and month when species recorded. Does not state the year. \nSEAL_NUMBER = Fur Seal unique identification number. \n\nData in the Sea Lion coverage contains: \n---------------------------------- \nLOCATION = The physical location of a Sea Lion. \nDATE = Date, month and year when species has been recorded. \nSEALION_NUMBER = Seal Lion unique identification number. \n\nConceptual consistency: Coverages are topologically consistent. No particular tests conducted by ERIN. \nCompleteness omission: Complete for the Australian continent.\nLineage: 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 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).

本数据库收录了澳大利亚沿海海域澳洲海狮的分布与丰度信息，数据源自原澳大利亚联邦科学与工业研究组织（Commonwealth Scientific and Industrial Research Organisation, CSIRO）野生动物与生态学分部的馆藏资料，并由P. Shaughnessy博士提供。

格式：形状文件（shapefile）。

质量：未明确
数据范围：数据集
外部精度：±1度
非量化精度：可变

海狗覆盖数据集包含以下字段：
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LOCATION：海狗的实际采集点位
DATE：物种记录的日期与月份，未标注年份
SEAL_NUMBER：海狗唯一识别编号

海狮覆盖数据集包含以下字段：
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LOCATION：海狮的实际采集点位
DATE：物种记录的完整日期（含年、月、日）
SEALION_NUMBER：海狮唯一识别编号

概念一致性：覆盖数据具备拓扑一致性，ERIN未开展专项一致性测试。
完整性缺失情况：澳大利亚全域数据完整。

数据溯源：原始数据存储于VAX文件、MS-DOS R-base文件，以及可通过LUPIS（Land Use Planning Information System, 土地利用规划信息系统）土地分配包访问的微型计算机数据集。CAMRIS系统基于运行于IBM RS 6000平台UNIX操作系统下的SPANS地理信息系统（Geographic Information System, GIS）软件搭建。以下为CSIRO完成的处理流程摘要：
1. r-BASE阶段：从多种来源（包括数字化数据、扫描文件、光盘只读存储器、美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）世界海洋图集、澳大利亚土壤图集、美国国家海洋和大气管理局GEODAS档案库，以及《澳大利亚气象全书》）将信息导入r-BASE系统。
2. 基于r-BASE中的馆藏信息，生成包含特定字段的BASE表。
3. SPANS环境配置：创建具备地理投影的全域数据集，投影方式为等距圆锥投影（简易圆锥投影）与兰伯特等角圆锥投影，椭球体采用1965年国际天文学联合会标准（适用于澳大利亚/南美洲区域），并指定左下角坐标与中心点经纬度。
4. 将BASE表导入SPANS系统，生成BASE地图。
5. 地图分类：通过筛选指定字段、设置所需窗口范围（如大陆区域或大陆与海洋区域）与分辨率层级（如四叉树层级），基于BASE地图与BASE表生成分类地图。
6. 地图栅格化：指定关键参数完成栅格化处理，包括比特数、分辨率（四叉树层级8为最低分辨率，16为最高分辨率）与窗口范围（通常为00或cn）。
7. 生成栅格地图配图：使用分类地图生成GIF格式图像，包含标题、图例、比例尺以及经纬度网格。
8. 数据交付：以.bil、.hdr、.gif格式文件，ArcGIS导出格式.e00文件，以及纯文本格式.asc和.txt文件交付给ERIN。
9. CAMRIS系统所用参考海岸线为平均高潮线（AUSLIG 1:100 000地形图图集系列）。