GwProperty - GWB: Fluoride - OGC API Features

Nature of natural, ubiquitously over-embossed groundwater. Achieving good quality groundwater status is one of the objectives of the EU Water Framework Directive (WFD). In this context, among other things, the State Geological Services of Germany (SGD) commissioned the group of persons background values groundwater (PK HGW) with the determination and statistical interpretation of the background values in groundwater in 2005. As a result, a comprehensive overview of aquifer-related background levels in groundwaters in Germany was compiled for hydrochemically similar units (HGCs). The results and method documentation are available on the website of the Federal Institute for Geosciences and Natural Resources (BGR) <a href='https://www.bgr.bund.de/DE/Topics/Water/Projects/Completed/Consultation/Background Values/hgw_projektbeschr.html?nnn=1548666' target='_blank'></a>. Preceding the nationwide processing partly, but also as a result, descriptions of the natural groundwater condition in the sense of geogenous background values were made by some geological state services. The country-specific processing made it possible to examine the hydrogeochemical units in more detail by means of a greater differentiation of the hydrogeochemical units. The nature of natural, ubiquitously over-embossed groundwater in Rhineland-Palatinate was investigated on a cartographic basis of the HÜK200 and the <a href='https://www.lgb-rlp.de/de/service/lgb-downloads/hydrogeologie-d.html#c2559' target='_blank'>results report</a> was published in 2012. The online map on the nature of natural, ubiquitously over-embossed groundwater shows the substance-specific concentrations for the hydrochemical units differentiated in Rhineland-Palatinate. For each hydrochemical unit, the median value (50% percentile) of the corresponding parameter is given. The given median values represent orientation variables in the assessment of the natural, ubiquitously overstamped groundwater properties and replace non-site-based on-site investigations.天然普遍本底叠加的地下水特征。实现优良的地下水水质状态，是欧盟水框架指令（Water Framework Directive, WFD）的核心目标之一。在此背景下，德国国家地质调查服务机构（State Geological Services of Germany, SGD）于2005年委托地下水本底值专项工作组（PK HGW）开展地下水本底值的测定与统计解析工作。最终，研究团队针对德国境内水文化学相似单元（hydrochemically similar units, HGCs），系统梳理了与含水层相关的地下水本底浓度水平，形成了全面的综述成果。该研究成果与方法文档可通过德国联邦地球科学与自然资源研究所（Federal Institute for Geosciences and Natural Resources, BGR）官网获取，链接：<a href='https://www.bgr.bund.de/DE/Topics/Water/Projects/Completed/Consultation/Background Values/hgw_projektbeschr.html?nnn=1548666' target='_blank'></a>。在部分全国性地下水本底调查工作开展期间及后续阶段，部分德国州级地质调查机构均基于地质成因本底值的定义，完成了天然地下水状态的相关描述工作。针对各州的专项处理工作，通过细化水文地球化学单元（hydrogeochemical units）的分类标准，实现了对水文地球化学单元的更精细化解析。针对莱茵兰-普法尔茨州境内天然普遍本底叠加的地下水特征，研究团队以HÜK200地图为基础开展了制图化调查，并于2012年发布了<a href='https://www.lgb-rlp.de/de/service/lgb-downloads/hydrogeologie-d.html#c2559' target='_blank'>成果报告</a>。该天然普遍本底叠加的地下水特征在线地图，展示了莱茵兰-普法尔茨州细分水文化学单元下的各物质专属浓度数据。针对每个水文化学单元，数据集均给出了对应参数的中位数（50%分位数）。所给出的中位数可作为天然普遍本底叠加地下水特征评估的参考变量，可替代非原位现场调查工作。