Hydrogeochemistry and environmental tracer composition of a sub-set of perennial Cooper Creek waterholes

\n## **Abstract** \nThis dataset was compiled by the Geological and Bioregional Assessment Program from field data referenced within the dataset and/or metadata. The dataset contains laboratory analyses of chemistry and environmental tracers on surface water samples collected from a subset of perennial waterholes along Cooper Creek during two targeted field sampling campaigns. The processes undertaken to produce the dataset are described in the 'History' field of this metadata statement.\n\n\n## **Attribution** \nGeological and Bioregional Assessment Program\n\n\n## **History** \nThis dataset contains laboratory analyses of chemistry and environmental tracers on surface water samples collected from a subset of perennial waterholes along Cooper Creek during two targeted field sampling campaigns. Specific perennial waterholes targeted for water sampling were identified using a combination of spatial data (specifically the COO_Lakes_WH_WFS.shp dataset) to obtain accurate locations of perennial waterholes and cadastre data for both QLD and SA to identify the property associated with each waterhole. The sub-set of perennial waterholes sampled in this dataset were the waterholes that the GBA Program negotiated permission to access for sampling. Water samples were collected using a custom submersible electric pump and following strict sampling protocols using specialised sampling vessels depending on each sample type. The chemistry data includes general field and laboratory chemistry (i.e. pH, EC, alkalinity) as well as major and minor ions analysed using a combination of ion chromatography, inductively coupled plasma - optical emission spectrometry (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS). Environmental tracer data contained in this dataset includes 222Rn, 2H, 18O, 87Sr/86Sr, He, Ne, Ar, Kr and Xe which were analysed using a range of specialised analytical equipment at a variety of laboratories.

## **摘要**
本数据集由地质与生物区域评估计划（Geological and Bioregional Assessment Program）依据数据集内部引用的实地数据和/或元数据编制而成。数据集包含对库珀溪（Cooper Creek）沿线部分常年性水塘采集的地表水样品所开展的化学与环境示踪剂实验室分析，采样工作依托两次专项野外采样活动。本数据集的编制流程详见本元数据声明的「历史」字段。

## **署名**
地质与生物区域评估计划

## **历史沿革**
本数据集包含对库珀溪沿线部分常年性水塘采集的地表水样品所开展的化学与环境示踪剂实验室分析，采样工作依托两次专项野外采样活动。本次采样选取的特定常年性水塘，通过结合空间数据（具体为COO_Lakes_WH_WFS.shp数据集）获取常年性水塘的精准位置，以及昆士兰州（QLD）与南澳大利亚州（SA）的地籍数据以确定各水塘所属地块，且仅包含GBA计划协商获得采样许可的常年性水塘。水样采集采用定制潜水电动泵，并依据不同样品类型选用专用采样容器，严格遵循采样规范开展操作。化学分析数据涵盖常规现场与实验室化学指标（如pH值、电导率EC、碱度），以及通过离子色谱法、电感耦合等离子体-光发射光谱法（ICP-OES）和电感耦合等离子体质谱法（ICP-MS）联合分析得到的常量与微量离子数据。本数据集包含的环境示踪剂数据包括²²²Rn、²H、¹⁸O、⁸⁷Sr/⁸⁶Sr、He、Ne、Ar、Kr和Xe，相关分析由多家实验室借助一系列专用分析设备完成。