Reduced thickness of clay

The dataset contains reduced clay thicknesses for single layers and accumulated layers. Data are calculated by subtracting the thickness of oxidised clay from the total thickness of clay over specific magazines calculated from hydrostratigraphic models. The oxidised part is assessed on the basis of the location of the redox limit, the location of the water table or a specific assessment. Data was originally compiled in raster format, and each point represents a grid cell centre. The inventory declaration is derived from the hydrostratigraphic model in question and therefore data cannot necessarily be compared across model boundaries. Reduced clay thickness is found as polygons and points. Data have been collected since the beginning of groundwater mapping in 2000 and will be updated on a regular basis.本数据集涵盖单层与累积层的还原黏土厚度数据。数据通过从水文地层模型计算得到的特定制图区块内的黏土总厚度中，扣除氧化黏土厚度后计算得出。氧化黏土部分的判定依据为氧化还原界面位置、地下水位位置或专项评估结果。原始数据采用栅格格式编制，每个点位对应一个网格单元的中心点。本数据集的清单信息源自所采用的目标水文地层模型，因此不同模型边界范围内的数据不具备直接可比性。还原黏土厚度数据以多边形和点位两种矢量要素形式存储。该数据集自2000年地下水填图工作启动以来持续收集，并将定期进行更新。