Australian Groundwater Hydrochemistry Data Collection

Hydrochemistry data for Australian groundwater, including field and laboratory measurements of chemical parameters (electrical conductivity (EC), potential of hydrogen (pH), redox potential, and dissolved oxygen), major and minor ions, trace elements, nutrients, pesticides, isotopes and organic chemicals. <

Value: The chemical properties of groundwater are key parameters to understand groundwater systems and their functions. Groundwater chemistry information includes the ionic and isotopic composition of the water, representing the gases and solids that are dissolved in it. Hydrochemistry data is used to understand the source, flow, and interactions of groundwater samples with surface water and geological units, providing insight into aquifer characteristics. Hydrochemistry information is key to determining the quality of groundwater resources for societal, agricultural, industrial and environmental applications. Insights from hydrochemical analyses can be used to assess a groundwater resource, the impact of land use changes, irrigation and groundwater extraction on regional groundwater quality and quantity, assess prospective mineral exploration targets, and determine how groundwater interacts with surface water in streams and lakes.

Scope: The database was inaugurated in 2016 with hydrochemical data collected over the Australian landmass by Geoscience Australia and its predecessors, and has expanded with regional and national data. It has been in the custodianship of the hydrochemists in Geoscience Australia's Minerals, Energy and Groundwater Division and its predecessors.

Explore the Geoscience Australia portal - https://portal.ga.gov.au/

澳大利亚地下水水化学数据集，包含野外与实验室测得的化学参数数据——包括电导率（electrical conductivity, EC）、氢离子浓度指数（potential of hydrogen, pH）、氧化还原电位、溶解氧，以及主要/次要离子、微量元素、营养盐、农药、同位素与有机化合物数据。

地下水化学属性是解析地下水系统及其功能的核心参数。地下水化学信息涵盖水体的离子与同位素组成，可反映其溶解的气体与固相物质。水化学数据可用于解析地下水样品的来源、径流路径，以及其与地表水、地质单元的相互作用，助力阐释含水层特征。水化学信息是判定地下水资源质量的关键依据，可应用于社会、农业、工业与环境领域。通过水化学分析得到的研究结论，可用于评估地下水资源状况、分析土地利用变化、灌溉活动与地下水开采对区域地下水水质与水量的影响，甄别潜在矿产勘探靶区，以及解析地下水与河湖地表水的相互作用机制。

该数据库于2016年正式启用，其数据由澳大利亚地质科学局（Geoscience Australia）及其前身机构在澳大利亚大陆范围内收集，并通过区域与国家级数据补充实现扩容。该数据集由澳大利亚地质科学局矿产、能源与地下水处及其前身机构的水化学研究人员负责管护。

可访问澳大利亚地质科学局门户网站：https://portal.ga.gov.au/