Great Artesian Basin - Hutton Aquifer - Total Dissolved Solids

Data used to produce the predicted Total Dissolved Solids map for the Hutton Aquifer and equivalents in the Hydrogeological Atlas of the Great Artesian Basin (Ransley et.al., 2015).There are four layers in the Hutton Aquifer and equivalents Total Dissolved Solids map dataA. Location of hydrochemistry samples (Point data, Shapefile)B. Predicted Concentration (Filled contours , Shapefile)C. Predicted Concentration Contours (Contours, Shapefile)D. Prediction Standard Error (Filled contours , Shapefile)The predicted values provide a regional based estimate and may be associated with considerable error. It is recommended that the predicted values are read together with the predicted error map, which provides an estimate of the absolute standard error associated with the predicted values at any point within the map.The predicted standard error map provides an absolute standard error associated with the predicted values at any point within the map. Please note this is not a relative error map and the concentration of a parameter needs to be considered when interpreting the map. Predicted standard error values are low where the concentration is low and there is a high density of samples. Predicted standard errors values can be high where the concentration is high and there is moderate variability between nearby samples or where there is a paucity of data.Concentrations are Total Dissolved Solids mg/L.Coordinate system is Lambert conformal conic GDA 1994, with central meridian 134 degrees longitude, standard parallels at -18 and -36 degrees latitude.The Hutton Aquifer and equivalents Total Dissolved Solids map is one of four hydrochemistry maps for the Hutton Aquifer and equivalents and 24 hydrochemistry maps in the Hydrogeological Atlas of the Great Artesian Basin (Ransley et.al., 2015). This dataset and associated metadata can be obtained from www.ga.gov.au, using catalogue number 81709. References:Hitchon, B. and Brulotte, M. (1994): Culling criteria for 'standard' formation water analyses; Applied Geochemistry, v. 9, p. 637-645Ransley, T., Radke, B., Feitz, A., Kellett, J., Owens, R., Bell, J. and Stewart, G., 2015. Hydrogeological Atlas of the Great Artesian Basin. Geoscience Australia. Canberra. [available from www.ga.gov.au using catalogue number 79790]

本数据集用于制作《大自流盆地水文地质图集》（Ransley等人，2015）中赫顿含水层及其等效含水层的总溶解固体（Total Dissolved Solids）预测分布图。
赫顿含水层及其等效含水层总溶解固体预测数据包含4个图层：
A. 水文化学采样点位数据（点要素，Shapefile格式）
B. 预测浓度（等值线填充图，Shapefile格式）
C. 预测浓度等值线（等值线要素，Shapefile格式）
D. 预测标准误差（等值线填充图，Shapefile格式）
该预测值为区域性估算结果，可能伴随较大误差。建议将预测值与预测误差图结合解读，误差图可提供研究区内任意点位预测值对应的绝对标准误差估算值。本预测标准误差图可给出研究区内任意点位预测值对应的绝对标准误差。请注意，本图并非相对误差图，解读该图时需结合对应参数的浓度数值。当浓度较低且采样点密度较高时，预测标准误差值较低；而当浓度较高、邻近采样点间变异性中等或数据匮乏时，预测标准误差值可能较高。
浓度单位为总溶解固体毫克每升（mg/L）。坐标系采用兰勃特共形圆锥投影（Lambert conformal conic）GDA 1994，中央经线为经度134度，标准纬线为南纬18度和南纬36度。
赫顿含水层及其等效含水层总溶解固体分布图是《大自流盆地水文地质图集》（Ransley等人，2015）中赫顿含水层及其等效含水层的4张水文化学图之一，亦是该图集内24张水文化学图之一。本数据集及相关元数据可通过澳大利亚地球科学局官网（www.ga.gov.au）获取，目录编号为81709。
参考文献：
1. Hitchon, B. 与 Brulotte, M. (1994)：《"标准"地层水分析的筛选标准》，《应用地球化学》，第9卷，第637-645页
2. Ransley, T., Radke, B., Feitz, A., Kellett, J., Owens, R., Bell, J. 及 Stewart, G., 2015. 《大自流盆地水文地质图集》，澳大利亚地球科学局，堪培拉。[可通过www.ga.gov.au获取，目录编号79790]