CLM - Interpolated piezometric surfaces for Alluvium

## **Abstract** \n\nThe dataset was derived by the Bioregional Assessment Programme from multiple source datasets. The source datasets are identified in the Lineage field in this metadata statement. The processes undertaken to produce this derived dataset are described in the History field in this metadata statement.\n\n\n\nContains the files and R scripts used for creating interpolated surfaces of depth to groundwater and contour maps of piezometric surfaces for dry (200 - 2007) and wet (2008 - 2012) periods in the Bremer, Clarence Lockyer, Logan-Albert and Richmond alluvial systems. Piezometric surfaces and depth to groundwater surfaces are created using ordinary kriging in R. The data used come from the bores in the QLD and NSW groundwater databases (see data lineage).\n\n## **Dataset History** \n\nGroundwater hydraulic head data from the NSW and QLD databases (see data lineage) was extracted by selecting only those data collected between 2000 and 2012 and that fell within the boundary shapefiles for the alluvial bodies. Elevation data from the DEM was appended to the spatial locations for each groundwater bore in the dataset. Ordinary kriging was then performed in R to create interpolated surfaces for depth to groundwater and piezometric surfaces. The kriging makes use of the digital elevation model as a covariate for aiding prediction. The R scripts output pdf maps of the surfaces for each of the following alluvial systems: Bremer, Clarence, Lockyer, Logan-Albert and Richmond. Maps are produced for for the dry period (2000 - 2007) and wet period (2008 - 2012) and show the predicted surface in addition to the prediction standard deviation.\n\n\n\nThe R script also outputs the rasters used to create these maps to .asc files (ascii grids). There are four such ascii grids for the entire alluvium: \n\n1. PiezometricSurface_Dry.asc (the estimated piezometric surface for all of the alluvium in the dry years which has been clipped to shapefiles to produce each of the .pdf maps)\n\n2. PiezometricSurface_SD_Dry.asc (the estimated standard deviation of the piezometric surface for all of the alluvium in the dry years which has been clipped to shapefiles to produce each of the .pdf maps)\n\n3. PiezometricSurface_Wet.asc (the estimated piezometric surface for all of the alluvium in the wet years which has been clipped to shapefiles to produce each of the .pdf maps)\n\n4. PiezometricSurface_SD_Wet.asc (the estimated standard deviation of the piezometric surface for all of the alluvium in the wet years which has been clipped to shapefiles to produce each of the .pdf maps)\n\n## **Dataset Citation** \n\nBioregional Assessment Programme (2014) CLM - Interpolated piezometric surfaces for Alluvium. Bioregional Assessment Derived Dataset. Viewed 28 September 2017, http://data.bioregionalassessments.gov.au/dataset/da04bc6a-b2ad-427f-a434-643ad6006ea0.\n\n## **Dataset Ancestors** \n\n* **Derived From** [CLM - Bore water level QLD](https://data.gov.au/data/dataset/20c5f443-bd19-4d2b-9f96-6633244c64e5)\n\n* **Derived From** [Qld 100k mapsheets - Warwick](https://data.gov.au/data/dataset/3e2fa307-1f06-4873-96d3-5c3e5638894a)\n\n* **Derived From** [Qld 100K mapsheets - Helidon](https://data.gov.au/data/dataset/b3f4f1b5-a2fd-40fc-b35b-78b100a50dcb)\n\n* **Derived From** [Qld 100K mapsheets - Ipswich](https://data.gov.au/data/dataset/71d610f7-084a-44c6-afa3-f0763396239b)\n\n* **Derived From** [Qld 100K mapsheets - Toowoomba](https://data.gov.au/data/dataset/5b8bf9c4-d127-45c5-9fef-a71013331d86)\n\n* **Derived From** [CLM - DEM in ascii format](https://data.gov.au/data/dataset/4e33c849-20ef-48f0-a522-22ac80d9cc73)\n\n* **Derived From** [CLM - Geology NSW & Qld combined v02](https://data.gov.au/data/dataset/982bd271-5ce8-48cf-b3cf-c50550509baa)\n\n* **Derived From** [Natural Resource Management (NRM) Regions 2010](https://data.gov.au/data/dataset/1d54e38f-4051-4f0c-a350-c7dbd8eba65b)\n\n* **Derived From** [Qld 100k mapsheets - Kingaroy](https://data.gov.au/data/dataset/01f58f60-9688-4b62-9de9-7e58aa0eeeb6)\n\n* **Derived From** [CLM - Extent of Bremer river and Warrill creek alluvial systems](https://data.gov.au/data/dataset/21239a36-67ea-4535-92e4-6ad4e37e0108)\n\n* **Derived From** [CLM - Extent of Richmond river alluvial system May 6th 2014](https://data.gov.au/data/dataset/75029853-ab90-42c8-a6de-85ecf1671dda)\n\n* **Derived From** [GEODATA TOPO 250K Series 3, File Geodatabase format (.gdb)](https://data.gov.au/data/dataset/96ebf889-f726-4967-9964-714fb57d679b)\n\n* **Derived From** [GEODATA TOPO 250K Series 3](https://data.gov.au/data/dataset/a0650f18-518a-4b99-a553-44f82f28bb5f)\n\n* **Derived From** [NSW Catchment Management Authority Boundaries 20130917](https://data.gov.au/data/dataset/0dc4272e-c081-4ed4-9645-aa336ffacd85)\n\n* **Derived From** [Geological Provinces - Full Extent](https://data.gov.au/data/dataset/0a064b3b-2a1e-4672-80d9-03333be67aad)\n\n* **Derived From** [CLM - Extent of Richmond river alluvial system February 3rd 2015](https://data.gov.au/data/dataset/e8a94d1e-d0c4-4c66-87ec-59bc83ea5d82)\n\n* **Derived From** [Qld 100K mapsheets - Allora](https://data.gov.au/data/dataset/46a276a3-fa56-4b1c-8aa4-0af90d28756b)\n\n* **Derived From** [Qld 100K mapsheets - Jandowae](https://data.gov.au/data/dataset/0e11158d-8dbb-453b-9bf0-f79fa3fa1d89)\n\n* **Derived From** [Bioregional Assessment areas v03](https://data.gov.au/data/dataset/96dbf469-5463-4f4d-8fad-4214c97e5aac)\n\n* **Derived From** [Qld 100K mapsheets - Esk](https://data.gov.au/data/dataset/9e7334b7-fbb0-4893-bd08-ac296ce9a4fb)\n\n* **Derived From** [CLM - Extent of Logan and Albert river alluvial systems](https://data.gov.au/data/dataset/c0047016-9e16-4803-ae21-a671582025f1)\n\n* **Derived From** [Qld 100K mapsheets - Mount Lindsay](https://data.gov.au/data/dataset/3031172f-ec23-4c4d-835f-0772da8829ba)\n\n* **Derived From** [CLM - Qld Surface Geology Mapsheets](https://data.gov.au/data/dataset/a040de87-21b1-4097-a273-41471405ab28)\n\n* **Derived From** [Clarence-Moreton SEEBASE & Structural GIS Project data.](https://data.gov.au/data/dataset/b1690f8b-4025-45d2-96a0-6feb03ff3e52)\n\n* **Derived From** [CLM - NSW Surface Geology Mapsheets in the Clarence-Moreton bioregion](https://data.gov.au/data/dataset/a1f5c7b3-ea1f-4ef0-9d05-f54e81f4c7b6)\n\n* **Derived From** [CLM - Extent of Clarence River alluvial systems](https://data.gov.au/data/dataset/46ec2295-19f2-48b7-bdbb-9347e6301c02)\n\n* **Derived From** [Hydstra Groundwater Measurement Update - NSW Office of Water, Nov2013](https://data.gov.au/data/dataset/08b34518-c947-4665-82e5-c144b5b24e01)\n\n* **Derived From** [Qld 100k mapsheets - Beenleigh](https://data.gov.au/data/dataset/f2eb7c75-52c5-4738-b7b7-76ec31b7f7ee)\n\n* **Derived From** [Qld 100K mapsheets - Caboolture](https://data.gov.au/data/dataset/cee55c9c-29f9-4733-aac9-9b82a2ff739f)\n\n* **Derived From** [CLM - Extent of Lockyer Creek alluvial system](https://data.gov.au/data/dataset/98160487-1dfe-41b5-9f8c-dc73795e2094)\n\n* **Derived From** [Qld 100k mapsheets - Murwillumbah](https://data.gov.au/data/dataset/c9852e4a-1084-4fdb-a538-17b89736205d)\n\n* **Derived From** [QLD Department of Natural Resources and Mines Groundwater Database Extract 20142808](https://data.gov.au/data/dataset/a5c5cbdb-1152-43f7-9533-a123027b7ce1)\n\n* **Derived From** [Bioregional Assessment areas v01](https://data.gov.au/data/dataset/0fd0d820-30b3-451f-a126-a50040426999)\n\n* **Derived From** [Bioregional Assessment areas v02](https://data.gov.au/data/dataset/e414b1b3-c42e-42e9-9cc4-2093054aa35f)\n\n* **Derived From** [Qld 100K mapsheets - Inglewood](https://data.gov.au/data/dataset/32869100-6b73-44a4-bcef-c58e380d0b7d)\n\n* **Derived From** [Qld 100K mapsheets - Oakey](https://data.gov.au/data/dataset/9b5ef250-c085-4365-b9c0-bb34e0b56150)\n\n* **Derived From** [Geoscience Australia, 1 second SRTM Digital Elevation Model (DEM)](https://data.gov.au/data/dataset/9a9284b6-eb45-4a13-97d0-91bf25f1187b)\n\n* **Derived From** [CLM - Bore water level NSW](https://data.gov.au/data/dataset/d20a15c4-b4ea-45a4-97e3-6ed83373ba97)\n\n

## **摘要**
本数据集由生物区域评估计划（Bioregional Assessment Programme）基于多源数据集衍生而成，其源数据集信息详见本元数据声明的**谱系（Lineage）**字段，衍生数据集的生成流程详见本元数据声明的**历史（History）**字段。

本数据集包含用于生成布雷默（Bremer）、克拉伦斯-洛克耶（Clarence Lockyer）、洛根-阿尔伯特（Logan-Albert）以及里士满（Richmond）冲积系统在枯水期（2000—2007年）与丰水期（2008—2012年）的地下水埋深插值曲面及测压水面（piezometric surface）等值线图所需的文件与R脚本（R scripts）。其中，测压水面与地下水埋深曲面通过R语言中的普通克里金插值（ordinary kriging）方法生成，所用数据取自昆士兰州（QLD）与新南威尔士州（NSW）地下水数据库中的地下水钻孔数据（详见数据谱系）。

## **数据集历史**
本数据集所用的地下水水头（hydraulic head）数据取自昆士兰州（QLD）与新南威尔士州（NSW）地下水数据库，筛选条件为2000—2012年间采集且位于冲积体边界形状文件范围内的数据。随后，我们将数字高程模型（Digital Elevation Model, DEM）的高程数据追加至数据集内每个地下水钻孔的空间位置属性中。接着，通过R语言调用普通克里金插值（ordinary kriging）方法生成地下水埋深曲面与测压水面插值曲面，该插值过程以数字高程模型作为辅助预测协变量。R脚本将为以下各冲积系统生成对应曲面的PDF地图：布雷默、克拉伦斯、洛克耶、洛根-阿尔伯特以及里士满。地图将分别覆盖枯水期（2000—2007年）与丰水期（2008—2012年），除预测曲面外，还将展示预测标准差结果。

R脚本还将生成地图所用的栅格数据并输出为.asc格式文件（ASCII栅格）。针对整个冲积区域，共包含4个此类ASCII栅格文件：
1. **PiezometricSurface_Dry.asc**：枯水期全冲积区域的估算测压水面，该文件已通过形状文件裁剪以生成各PDF地图
2. **PiezometricSurface_SD_Dry.asc**：枯水期全冲积区域测压水面的估算标准差，该文件已通过形状文件裁剪以生成各PDF地图
3. **PiezometricSurface_Wet.asc**：丰水期全冲积区域的估算测压水面，该文件已通过形状文件裁剪以生成各PDF地图
4. **PiezometricSurface_SD_Wet.asc**：丰水期全冲积区域测压水面的估算标准差，该文件已通过形状文件裁剪以生成各PDF地图

## **数据集引用**
生物区域评估计划（Bioregional Assessment Programme）（2014）《CLM——冲积层插值测压水面》，生物区域评估衍生数据集，2017年9月28日查阅，http://data.bioregionalassessments.gov.au/dataset/da04bc6a-b2ad-427f-a434-643ad6006ea0.

## **数据集溯源**
* **源自** [CLM - Bore water level QLD](https://data.gov.au/data/dataset/20c5f443-bd19-4d2b-9f96-6633244c64e5)
* **源自** [Qld 100k mapsheets - Warwick](https://data.gov.au/data/dataset/3e2fa307-1f06-4873-96d3-5c3e5638894a)
* **源自** [Qld 100K mapsheets - Helidon](https://data.gov.au/data/dataset/b3f4f1b5-a2fd-40fc-b35b-78b100a50dcb)
* **源自** [Qld 100K mapsheets - Ipswich](https://data.gov.au/data/dataset/71d610f7-084a-44c6-afa3-f0763396239b)
* **源自** [Qld 100K mapsheets - Toowoomba](https://data.gov.au/data/dataset/5b8bf9c4-d127-45c5-9fef-a71013331d86)
* **源自** [CLM - DEM in ascii format](https://data.gov.au/data/dataset/4e33c849-20ef-48f0-a522-22ac80d9cc73)
* **源自** [CLM - Geology NSW & Qld combined v02](https://data.gov.au/data/dataset/982bd271-5ce8-48cf-b3cf-c50550509baa)
* **源自** [Natural Resource Management (NRM) Regions 2010](https://data.gov.au/data/dataset/1d54e38f-4051-4f0c-a350-c7dbd8eba65b)
* **源自** [Qld 100k mapsheets - Kingaroy](https://data.gov.au/data/dataset/01f58f60-9688-4b62-9de9-7e58aa0eeeb6)
* **源自** [CLM - Extent of Bremer river and Warrill creek alluvial systems](https://data.gov.au/data/dataset/21239a36-67ea-4535-92e4-6ad4e37e0108)
* **源自** [CLM - Extent of Richmond river alluvial system May 6th 2014](https://data.gov.au/data/dataset/75029853-ab90-42c8-a6de-85ecf1671dda)
* **源自** [GEODATA TOPO 250K Series 3, File Geodatabase format (.gdb)](https://data.gov.au/data/dataset/96ebf889-f726-4967-9964-714fb57d679b)
* **源自** [GEODATA TOPO 250K Series 3](https://data.gov.au/data/dataset/a0650f18-518a-4b99-a553-44f82f28bb5f)
* **源自** [NSW Catchment Management Authority Boundaries 20130917](https://data.gov.au/data/dataset/0dc4272e-c081-4ed4-9645-aa336ffacd85)
* **源自** [Geological Provinces - Full Extent](https://data.gov.au/data/dataset/0a064b3b-2a1e-4672-80d9-03333be67aad)
* **源自** [CLM - Extent of Richmond river alluvial system February 3rd 2015](https://data.gov.au/data/dataset/e8a94d1e-d0c4-4c66-87ec-59bc83ea5d82)
* **源自** [Qld 100K mapsheets - Allora](https://data.gov.au/data/dataset/46a276a3-fa56-4b1c-8aa4-0af90d28756b)
* **源自** [Qld 100K mapsheets - Jandowae](https://data.gov.au/data/dataset/0e11158d-8dbb-453b-9bf0-f79fa3fa1d89)
* **源自** [Bioregional Assessment areas v03](https://data.gov.au/data/dataset/96dbf469-5463-4f4d-8fad-4214c97e5aac)
* **源自** [Qld 100K mapsheets - Esk](https://data.gov.au/data/dataset/9e7334b7-fbb0-4893-bd08-ac296ce9a4fb)
* **源自** [CLM - Extent of Logan and Albert river alluvial systems](https://data.gov.au/data/dataset/c0047016-9e16-4803-ae21-a671582025f1)
* **源自** [Qld 100K mapsheets - Mount Lindsay](https://data.gov.au/data/dataset/3031172f-ec23-4c4d-835f-0772da8829ba)
* **源自** [CLM - Qld Surface Geology Mapsheets](https://data.gov.au/data/dataset/a040de87-21b1-4097-a273-41471405ab28)
* **源自** [Clarence-Moreton SEEBASE & Structural GIS Project data.](https://data.gov.au/data/dataset/b1690f8b-4025-45d2-96a0-6feb03ff3e52)
* **源自** [CLM - NSW Surface Geology Mapsheets in the Clarence-Moreton bioregion](https://data.gov.au/data/dataset/a1f5c7b3-ea1f-4ef0-9d05-f54e81f4c7b6)
* **源自** [CLM - Extent of Clarence River alluvial systems](https://data.gov.au/data/dataset/46ec2295-19f2-48b7-bdbb-9347e6301c02)
* **源自** [Hydstra Groundwater Measurement Update - NSW Office of Water, Nov2013](https://data.gov.au/data/dataset/08b34518-c947-4665-82e5-c144b5b24e01)
* **源自** [Qld 100k mapsheets - Beenleigh](https://data.gov.au/data/dataset/f2eb7c75-52c5-4738-b7b7-76ec31b7f7ee)
* **源自** [Qld 100K mapsheets - Caboolture](https://data.gov.au/data/dataset/cee55c9c-29f9-4733-aac9-9b82a2ff739f)
* **源自** [CLM - Extent of Lockyer Creek alluvial system](https://data.gov.au/data/dataset/98160487-1dfe-41b5-9f8c-dc73795e2094)
* **源自** [Qld 100k mapsheets - Murwillumbah](https://data.gov.au/data/dataset/c9852e4a-1084-4fdb-a538-17b89736205d)
* **源自** [QLD Department of Natural Resources and Mines Groundwater Database Extract 20142808](https://data.gov.au/data/dataset/a5c5cbdb-1152-43f7-9533-a123027b7ce1)
* **源自** [Bioregional Assessment areas v01](https://data.gov.au/data/dataset/0fd0d820-30b3-451f-a126-a50040426999)
* **源自** [Bioregional Assessment areas v02](https://data.gov.au/data/dataset/e414b1b3-c42e-42e9-9cc4-2093054aa35f)
* **源自** [Qld 100K mapsheets - Inglewood](https://data.gov.au/data/dataset/32869100-6b73-44a4-bcef-c58e380d0b7d)
* **源自** [Qld 100K mapsheets - Oakey](https://data.gov.au/data/dataset/9b5ef250-c085-4365-b9c0-bb34e0b56150)
* **源自** [Geoscience Australia, 1 second SRTM Digital Elevation Model (DEM)](https://data.gov.au/data/dataset/9a9284b6-eb45-4a13-97d0-91bf25f1187b)
* **源自** [CLM - Bore water level NSW](https://data.gov.au/data/dataset/d20a15c4-b4ea-45a4-97e3-6ed83373ba97)