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

1160753 van Geen这笔赠款支持开发新的钻探和采样技术，以便与地下水同时回收未受影响的含水层沉积物，并在国际大陆科学钻探计划(ICDP)的赞助下向科学界提供这项技术。该开发项目与学术和私营部门合作，建造和测试基于珀尔蒂埃冷却器的冷冻岩心原型系统，旨在就地将松散的含水层基质和流体回收到300米深，用于随后的地球化学和沉积学分析。开发完成后，冷冻核心系统将被部署在国际地球科学中心资助的一个项目中，以研究与砷化物物种的地下运输和去向有关的来源和氧化还原控制的地球化学过程，并最终可供更广泛的科学界用于全球地下水地球化学和微生物调查。

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.***