Extent of Study Area GIP

## **Abstract** \n\nThe dataset was compiled by the Bioregional Assessment Programme from multiple sources referenced within the dataset and/or metadata. The processes undertaken to compile this dataset are described in the History field in this metadata statement.The Gippsland Basin Bioregional Assessment groundwater model uses this extent to derive its data sets and to plot the outputs from the model. The shapefile is used to cut any inputs that are on a larger scale and to fit them into the groundwater model. The extent includes both onshore and offshore Gippsland Basin extents to incorporate offshore oil and gas industry extractions and the influence of these on onshore aquifers. This extent is the same as that used in the Victorian Onshore Natural Gas Water Science Studies undertaken to determine the potential impact of future exploration and extraction of oil and gas (conventional and non-conventional) on water resources in the Gippsland Basin.\n\n## **Purpose** \n\nThis shapefile is used to cut and present other datasets to the groundwater model extent.\n\n## **Dataset History** \n\nThis shapefile delineates the extent of the groundwater model for the Gippsland Basin Bioregional Assessment and is based on the same extent used for the Victorian onshore natural gas water science studies undertaken in 2015. This study required the development of a groundwater model for the Gippsland Basin (both on and offshore) to investigate and understand the potential impacts of future onshore gas developments and to understand the possible impacts of a potential onshore natural gas industry on groundwater and surface waters within the Gippsland region. The groundwater model (Beverley et al., 2015) was constructed in MODFLOW-2005 and adopted a uniform spatial resolution of 400m with a spatial extent of 6,698,000 ha, of which 3,629,000 ha exists onshore and 3,069,000 ha offshore. This model is available online under the Victorian onshore natural gas website.\n\n## **Dataset Citation** \n\nVictorian Department of Environment, Land, Water and Planning (2015) Extent of Study Area GIP. Bioregional Assessment Source Dataset. Viewed 05 October 2018, http://data.bioregionalassessments.gov.au/dataset/4509d2d0-28b7-4775-a788-f120b26e64ec.

**摘要**

本数据集由生物区域评估计划（Bioregional Assessment Programme）依据数据集内部及元数据中引用的多源资料汇编而成。本数据集的汇编流程详见本元数据说明中的“历史沿革”字段。吉普斯兰盆地（Gippsland Basin）生物区域评估地下水模型依托该研究范围生成数据集并绘制模型输出成果。该形状文件（shapefile）用于裁剪更大尺度的输入数据，以适配地下水模型的计算范围。其范围涵盖陆上与近海吉普斯兰盆地全域，以纳入近海油气开采活动及其对陆上含水层的影响。该范围与2015年开展的维多利亚州陆上天然气水科学研究中所用范围一致，该研究旨在评估未来常规与非常规油气的勘探开采对吉普斯兰盆地水资源的潜在影响。

**用途**

本形状文件（shapefile）用于将其他数据集裁剪并整合至地下水模型的研究范围。

**数据集历史**

本形状文件（shapefile）划定了吉普斯兰盆地生物区域评估地下水模型的研究范围，其依托2015年维多利亚州陆上天然气水科学研究所用的同一范围。该研究需构建覆盖吉普斯兰盆地（含陆上与近海区域）的地下水模型，以探究并明晰未来陆上天然气开发的潜在影响，以及陆上天然气产业潜在发展对吉普斯兰地区地下水与地表水的可能影响。该地下水模型（Beverley等，2015）基于MODFLOW-2005构建，采用统一的400米空间分辨率，空间范围达669.8万公顷，其中陆上面积362.9万公顷，近海面积306.9万公顷。该模型可于维多利亚州陆上天然气官方网站获取。

**数据集引用**

维多利亚州环境、土地、水利与规划厅（2015）《研究区域范围GIP》，生物区域评估源数据集。2018年10月5日查阅，http://data.bioregionalassessments.gov.au/dataset/4509d2d0-28b7-4775-a788-f120b26e64ec.