Tomago sand beds

## **Abstract** \n\nThis dataset was supplied to the Bioregional Assessment Programme by a third party and is presented here as originally supplied. Metadata was not provided and has been compiled by the Bioregional Assessment Programme based on the known details at the time of acquisition.\n\n\n\nThis dataset was created from work done in a PhD thesis. \n\nA shapefile representing the Tomago sand beds digitised from an existing map which is included in the data set. The Tomago Sandbeds represent a groundwater resource, managed by Hunter Water, contributing to the lower Hunter’s drinking water supply. The sandbeds are parallel to the coast between Newcastle and Port Stephens, starting at Tomago and extending north-east for 25 kilometres to Lemon Tree Passage.\n\n## **Dataset History** \n\nA shapefile representing the Tomago sand beds digitised from an existing map which is included in the data set: tomago_sandbeds1.tif. The image was sourced from a PhD Thesis - citation below. A polygon shapefile was created in ArcGIS by georeferencing the image digitising the boundary of the sand beds shown in the map.\n\n\n\nImage source:\n\nCrosbie, R. S. (2003). Regional scaling of groundwater recharge (Doctoral dissertation, University of Newcastle).\n\n\n\nThe image used was Figure 2.1 in the above publication.\n\n## **Dataset Citation** \n\nUniversity of Newcastle (2014) Tomago sand beds. Bioregional Assessment Source Dataset. Viewed 02 May 2016, http://data.bioregionalassessments.gov.au/dataset/04ff0b0d-3f63-4400-a986-d656da24c165.**摘要** 本数据集由第三方提供给生物区域评估计划（Bioregional Assessment Programme），此处按原始提供的形式发布。数据集未附带元数据，系生物区域评估计划基于获取时掌握的相关细节自行编制。 本数据集基于一篇博士学位论文中的研究成果创建。 本数据集包含一份从现有地图数字化得到的托马戈沙床（Tomago sand beds）形状文件（shapefile），该地图已随数据集一同提供。托马戈沙床为一处地下水资源，由亨特水务（Hunter Water）负责管理，为下亨特地区提供饮用水源。该沙床与纽卡斯尔（Newcastle）至斯蒂芬斯港（Port Stephens）之间的海岸平行分布，起点为托马戈，向东北延伸25公里至柠檬树通道（Lemon Tree Passage）。 **数据集历史** 本数据集附带的托马戈沙床形状文件（shapefile）基于现有地图数字化得到，该地图文件为tomago_sandbeds1.tif，已随数据集一同提供。该图像源自一篇博士学位论文，引用信息如下。研究人员通过ArcGIS软件对该图像进行地理配准，并数字化地图中展示的沙床边界，最终生成多边形形状文件。 图像来源： 克罗斯比（Crosbie, R. S.）（2003）. 地下水补给的区域尺度分析（博士学位论文，纽卡斯尔大学）. 本次使用的图像为上述论文中的图2.1。 **数据集引用** 纽卡斯尔大学（2014）《托马戈沙床》，生物区域评估源数据集。2016年5月2日查阅，来源网址：http://data.bioregionalassessments.gov.au/dataset/04ff0b0d-3f63-4400-a986-d656da24c165。