Unsaturated Great Artesian Basin Aquifer - PED

## **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 unsaturated (dry).\n\n## **Purpose** \n\nTo represent the unsaturated areas of the Great Artesian Basin.\n\n## **Dataset History** \n\nThis file 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. This file was developed by comparing the bottom of JK aquifer horizon (RL mAHD) to that of the uncorrected potentiometric surface of groundwater for the same aquifer (RL mAHD). Where the two were equal, this was interpreted to be the boundary between saturated and unsaturated groundwater conditions within the JK Aquifer. Areas where the potentiometric surface was interpreted to be lower than the base of the JK aquifer were included within polygons representative of unsaturated (dry) aquifer. The specific datafiles used to develop this layer include: \n\nM:\\Projects_GW\\GAB\\spatial_data\\hydro_map\\2012_map\\Updated_rasters\\zd_all\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) Unsaturated Great Artesian Basin Aquifer - PED. Bioregional Assessment Source Dataset. Viewed 12 October 2016, http://data.bioregionalassessments.gov.au/dataset/554735cd-3c96-45bf-96d8-88b9c92dcfd5.

## 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），并按原始提交格式在此呈现。

本数据集描述了大自流盆地（Great Artesian Basin，简称GAB）JK含水层中被判定为非饱和（干燥）的区域。

## 数据集用途

本数据集旨在表征大自流盆地JK含水层的非饱和区域。

## 数据集历史

本文件与多个数据集同步开发，作为澳大利亚政府资助的研究项目“为大自流盆地分配水资源并维持泉水生态（Allocating Water and Maintaining Springs in the GAB）”的组成部分。项目相关链接：http://archive.nwc.gov.au/library/topic/groundwater/allocating-water-and-maintaining-springs-in-the-great-artesian-basin。

本文件通过对比JK含水层底板高程（以RL mAHD为单位）与同一含水层未经校正的地下水测压面（potentiometric surface）高程（以RL mAHD为单位）生成。当两者高程相等时，该位置被判定为JK含水层饱和与非饱和地下水状态的边界。将测压面高程低于JK含水层底板的区域纳入代表非饱和（干燥）含水层的多边形要素中。用于生成本图层的具体数据文件包括：
M:Projects_GWGABspatial_datahydro_map2012_mapUpdated_rasterszd_all
M:Projects_GWGABspatial_datahydro_map2012_mapUpdated_rasterspot_surface

## 数据集引用

南澳大利亚州环境、水与自然资源部（SA Department of Environment, Water and Natural Resources，2015）：大自流盆地非饱和含水层——PED。生物区域评估源数据集。2016年10月12日查阅，http://data.bioregionalassessments.gov.au/dataset/554735cd-3c96-45bf-96d8-88b9c92dcfd5。