Mean residual water level error - Gippsland 1990

## **Abstract** \n\nThis dataset was supplied to the Bioregional Assessment Programme by a third party and is presented here as originally supplied. Metadata was not provided and has been compiled by the Bioregional Assessment Programme based on known details at the time of acquisition. \n\n\n\nThe spatial distributions of residual water level errors are presented for 1980, 1990, 2000 and 2010. The mean residual water level is defined such that negative numbers refer to points where predicted groundwater head values are higher than observed and positive values indicate that predicted groundwater head values are lower than observed.\n\n\n\nThe dataset was generated in the Gippsland Groundwater Model (Beverly et al 2015). The 1990 residual error reflects the difference between the simulated and the measured water level surfaces at groundwater monitoring bores across all aquifers.\n\n## **Purpose** \n\nThe purpose of the residual error data layer is to provide an indication of the modelled groundwater level surfaces performance relative measured groundwater level data as of 1990.\n\n\n\n"Results .. suggest that the model over predicts the heads in the outcropped regions and under predicts the heads in the lower parts of the landscape. The greatest errors are shown to be in the outcropping regions ....suggesting that the model attribution associated with model layer 23 requires further analysis. This is consistent with observations reported .....that considered the hydraulic conductivities attributed to zones 23-29 were on the lower bounds of previously reported values."\n\nExtract from the Gippsland groundwater model technical report (Beverly et al, 2015)\n\n## **Dataset History** \n\nMeasured groundwater level sourced from the Victorian groundwater database and reported as metres above sea level. The 1990 simulated water level sourced from the Gippsland Groundwater Model (Beverly et al 2015). Calculation made by Measured minus Simulated. \n\nGippsland groundwater model technical report (Beverly et al, 2015).\n\n## **Dataset Citation** \n\nVictorian Department of Economic Development, Jobs, Transport and Resources (2015) Mean residual water level error - Gippsland 1990. Bioregional Assessment Source Dataset. Viewed 05 October 2018, http://data.bioregionalassessments.gov.au/dataset/7f531c93-8b18-4bd0-a7ef-d2e37b89a280.

## **摘要**

本数据集由第三方提供给生物区域评估项目（Bioregional Assessment Programme），并按原始提供形式呈现于此。元数据未随附，由生物区域评估项目根据获取时已知的细节整理而成。

本数据集呈现了1980年、1990年、2000年及2010年的残余水位误差空间分布。平均残余水位的定义如下：负值表示预测地下水位值高于观测值，正值表示预测地下水位值低于观测值。

本数据集基于吉普斯兰地下水模型（Gippsland Groundwater Model，Beverly等，2015）生成。1990年的残余误差反映了所有含水层中地下水监测钻孔处模拟水位面与实测水位面之间的差异。

## **目的**

残余误差数据层的目的是为1990年建模地下水位面相对于实测地下水位数据的表现提供参考依据。

"结果表明，模型在出露区域高估了水位，而在地形较低区域低估了水位。最大误差出现在出露区域，这提示与模型第23层相关的模型归因需进一步分析。这与已报道的观测结果一致，即23-29区的导水系数被设定在先前报道值的下限。"

——摘自《吉普斯兰地下水模型技术报告》（Beverly等，2015）

## **数据集历史**

实测地下水位数据来源于维多利亚州地下水数据库，以海拔米数表示。1990年模拟水位数据来源于吉普斯兰地下水模型（Beverly等，2015）。计算方式为实测值减去模拟值。

《吉普斯兰地下水模型技术报告》（Beverly等，2015）。

## **数据集引用**

维多利亚州经济发展、就业、交通与资源部（2015）。平均残余水位误差——吉普斯兰1990。生物区域评估源数据集。查阅日期：2018年10月5日，网址：http://data.bioregionalassessments.gov.au/dataset/7f531c93-8b18-4bd0-a7ef-d2e37b89a280。