Development of Freeze-Shoe Sampler to Recover Aquifer Sands with In-situ Groundwater From up to 1000-ft Depth

1160753van geen这笔拨款支持开发新的钻探和采样技术，以同时恢复地下水和未受损害的含水层沉积物，并在国际大陆科学钻探计划（ICDP）的主持下，将这项技术提供给科学界。该开发项目与学术界和私营部门合作，建立并测试了一个基于Peltier冷却器的原型冷冻核心系统，该系统旨在回收300米深处的原位、未固结含水层基质和流体，用于随后的地球化学和沉积学分析。开发完成后，冷冻核心系统将部署在icdp资助的项目中，研究与砷化物物种的地下运输和命运相关的来源和氧化还原控制的地球化学过程，并最终可用于更广泛的科学界，用于全球地下水地球化学和微生物研究

1160753van GeenThis grant supports development of new drilling and sampling technology to recover uncompromised aquifer sediment simultaneously with groundwater and to make this technology available to the scientific community under the auspices of the International Continental Scientific Drilling Program (ICDP). The development engages an academic-private partnership to build and test a prototype Peltier cooler based freeze core system designed to recover in situ, unconsolidated aquifer matrix and fluids to depths of 300 m for subsequent geochemical and sedimentological analysis. Upon completion of the development, the freeze core system will be deployed in a ICDP-funded project to study the provenance and redox controlled geochemical processes associated with the subsurface transport and fate of arsenide species and ultimately would be available to the broader science community for groundwater geochemical and microbiological investigations globally.***