Confined Great Artesian Basin Aquifer - ARC

## **Abstract** \n\nThis dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied.\n\nIt describes areas of Great Artesian Basin (JK) Aquifer to be interpreted as confined, minus a few outliers.\n\n## **Purpose** \n\nTo represent the confined areas of the Great Artesian Basin minus a few outliers, to aid in display clarity.\n\n## **Dataset History** \n\nThe original layer called SANT_Extent_Confined_Aquifer_june2012.shp was developed along with a number of data sets as part of the Australian Government funded research program entitled Allocating Water and Maintaining Springs in the GAB. http://archive.nwc.gov.au/library/topic/groundwater/allocating-water-and-maintaining-springs-in-the-great-artesian-basin. A number of small outliers or zones of confined GAB groundwater condition separate from the main zone were removed from the original layer to aid clarity to the map by comparing the top of JK aquifer horizon (RL mAHD) to that of the potentiometric surface of groundwater for the same aquifer (RL mAHD). Where the two were equal, this was interpreted to be the boundary between unconfined and confined groundwater conditions within the JK Aquifer. The line displayed is smoothed to improve display. The specific datafiles used to develop this layer include: \n\nM:\\Projects_GW\\GAB\\spatial_data\\hydro_map\\2012_map\\Updated_rasters\\cd_all_clip\n\nM:\\Projects_GW\\GAB\\spatial_data\\hydro_map\\2012_map\\Updated_rasters\\pot_surface\n\n## **Dataset Citation** \n\nSA Department of Environment, Water and Natural Resources (2015) Confined Great Artesian Basin Aquifer - ARC. Bioregional Assessment Source Dataset. Viewed 26 May 2016, http://data.bioregionalassessments.gov.au/dataset/e1c134c8-f913-436b-a330-d72de1738e0f.

**摘要**
本数据集及其元数据声明由第三方提交至生物区域评估计划（Bioregional Assessment Programme），本文档严格按照原始提交版本呈现。
本数据集描述了大自流盆地（Great Artesian Basin）JK含水层（JK Aquifer）的承压区域，剔除了少量离群区域。

**用途**
用于表征大自流盆地的承压区域（剔除少量离群区域），以提升地图展示的清晰度。

**数据集历史**
原始图层名为SANT_Extent_Confined_Aquifer_june2012.shp，系澳大利亚政府资助的研究项目「大自流盆地水资源分配与泉水保护（Allocating Water and Maintaining Springs in the GAB）」的配套数据集之一，项目公开链接：http://archive.nwc.gov.au/library/topic/groundwater/allocating-water-and-maintaining-springs-in-the-great-artesian-basin。
研究人员通过对比JK含水层顶板高程（以澳大利亚高程基准面米数计，RL mAHD）与同一含水层的地下水测压水面高程（RL mAHD），将与主承压区分离的小型离群区域或独立承压地下水条件区从原始图层中剔除，以优化地图显示效果。当两处高程相等时，该位置被判定为JK含水层内潜水与承压地下水的分界。展示所用的边界线已做平滑处理以提升视觉表现力。
用于生成该图层的具体源数据文件包括：
M:Projects_GWGABspatial_datahydro_map2012_mapUpdated_rasterscd_all_clip
M:Projects_GWGABspatial_datahydro_map2012_mapUpdated_rasterspot_surface

**数据集引用**
南澳环境、水与自然资源部（SA Department of Environment, Water and Natural Resources）（2015）《大自流盆地承压含水层——ARC》，生物区域评估源数据集，2016年5月26日查阅，来源地址：http://data.bioregionalassessments.gov.au/dataset/e1c134c8-f913-436b-a330-d72de1738e0f。