Great Artesian Basin - Cadna-owie Hooray Aquifer Erase

## **Abstract** \n\nThis dataset was derived by the Bioregional Assessment Programme. The parent datasets are identified in the Lineage field in this metadata statment. The processes undertaken to produce this derived dataset are described in the History field in this metadata statement.\n\n\n\nThis is a cartographic dataset showing the area of the Great Artesian Basin that is outside the Cadna Owie - Hooray aquifer extent.\n\n## **Dataset History** \n\nThe polygon shapefile within this dataset was created by erasing the Cadna Owie - Hooray aquifer extent shapefile: CadnaOwie_Hooray_Aquifer_Extent.shp (GABATLAS - Cadna-owie-Hooray Aquifer and Equivalents - Thickness and Extent, GUID: \tbc55589c-1c6f-47ba-a1ac-f81b0151c630) from the Great Artesian Basin extent shapefile: GAB_Hydrological_Boundary.shp (Great Artesian Basin - Hydrogeology and Extent Boundary, GUID: 020957ea-4877-4009-872c-3cacfb6f8ded).\n\n\n\nUsing the Erase tool in ArcGIS (Analysis Tools > Overlay > Erase) with the following input parameters:\n\nin_features: GAB_Hydrological_Boundary.shp\n\nerase_features: CadnaOwie_Hooray_Aquifer_Extent.shp\n\n## **Dataset Citation** \n\nBioregional Assessment Programme (2016) Great Artesian Basin - Cadna-owie Hooray Aquifer Erase. Bioregional Assessment Derived Dataset. Viewed 05 July 2017, http://data.bioregionalassessments.gov.au/dataset/b2182f7c-2bc7-4101-8ab8-acecb157d931.\n\n## **Dataset Ancestors** \n\n* **Derived From** [GABATLAS - Cadna-owie-Hooray Aquifer and Equivalents - Thickness and Extent](https://data.gov.au/data/dataset/bc55589c-1c6f-47ba-a1ac-f81b0151c630)\n\n* **Derived From** [Great Artesian Basin - Hydrogeology and Extent Boundary](https://data.gov.au/data/dataset/020957ea-4877-4009-872c-3cacfb6f8ded)\n\n

**摘要**

本数据集由生物区域评估计划（Bioregional Assessment Programme）衍生生成。元数据声明中的“谱系”字段已标注其父级数据集，本衍生数据集的生成流程详见元数据声明中的“历史”字段。

本数据集为制图数据集，展示了大自流盆地（Great Artesian Basin）中不属于卡德纳-奥维-胡赖含水层（Cadna Owie - Hooray aquifer）分布范围的区域。

**数据集历史**

本数据集包含的多边形矢量shapefile文件，通过擦除操作生成：将卡德纳-奥维-胡赖含水层分布范围矢量shapefile文件CadnaOwie_Hooray_Aquifer_Extent.shp（GABATLAS——卡德纳-奥维-胡赖含水层及等效含水层厚度与分布范围，全局唯一标识符（GUID）：bc55589c-1c6f-47ba-a1ac-f81b0151c630），从大自流盆地分布范围矢量shapefile文件GAB_Hydrological_Boundary.shp（大自流盆地——水文地质与分布边界，全局唯一标识符（GUID）：020957ea-4877-4009-872c-3cacfb6f8ded）中移除。

本次操作使用ArcGIS的分析工具>叠加分析>擦除工具，输入参数如下：

输入要素（in_features）：GAB_Hydrological_Boundary.shp

擦除要素（erase_features）：CadnaOwie_Hooray_Aquifer_Extent.shp

**数据集引用**

生物区域评估计划（2016）《大自流盆地——卡德纳-奥维-胡赖含水层擦除数据集》，生物区域评估衍生数据集。查阅日期：2017年7月5日，来源网址：http://data.bioregionalassessments.gov.au/dataset/b2182f7c-2bc7-4101-8ab8-acecb157d931

**数据集溯源父集**

* **衍生自** [GABATLAS——卡德纳-奥维-胡赖含水层及等效含水层厚度与分布范围](https://data.gov.au/data/dataset/bc55589c-1c6f-47ba-a1ac-f81b0151c630)

* **衍生自** [大自流盆地——水文地质与分布边界](https://data.gov.au/data/dataset/020957ea-4877-4009-872c-3cacfb6f8ded)