MRI: Acquisition of hydrogeophysical downhole nuclear magnetic resonance instrument to support research and student training

1531313Parsekian主要研究仪器（MRI）计划的资助将使早期职业研究者获得一种电缆井眼核磁共振（NMR）测井工具，用于调查地下水文特性。核磁共振波谱对氢核非常敏感，长期以来一直用于油气勘探。所提出的核磁共振仪器被设计成适合标准的地下水井，并被调谐以获取特定于氢核的共振频率。钻孔核磁共振仪器将成为近地下环境成像设施（FINSE）的一部分，FINSE是威斯康星大学建立的仪器设施，由训练有素的工作人员管理，并将支持怀俄明州环境水文和地球物理中心（WyCEHG）的现场分析能力，该中心是由NSF/EPSCoR资助的水力地球物理卓越中心。与常规方法相比，核磁共振测井工具将大大提高地下水文参数的空间（0.5 m）和时间分辨率，这些方法通常聚集超过10米的地下水文观测，因此获得的知识具有变革性的潜力，因此支持NSF促进科学进步的使命。研究人员打算将核磁共振工具用于由美国国家科学基金会地球科学部支持的关键区域观测站感兴趣的渗透带水文学研究和北极高纬度永久冻土研究；该仪器将有助于地下水资源评价，从而促进国家福利。该仪器将支持学生使用核磁共振工具进行区域利益研究的实践学习，从而培养他们未来在常规地下水文研究领域的就业能力，这是与国家科学基金促进国家福利的使命一致的另一个方面。***

1531313Parsekian Funding from this Major Research Instrumentation (MRI) Program grant will enable an early career investigator to acquire a wireline, borehole nuclear magnetic resonance (NMR) well logging tool to be used for investigations of subsurface hydrologic properties. NMR spectroscopy is sensitive to Hydrogen nuclei and has long been used for hydrocarbon exploration. The proposed NMR instrument is designed to fit into standard groundwater wells and is tuned to pick up the resonant frequencies specific to Hydrogen nuclei. The borehole NMR instrument would become part of the Facility for Imaging of the Near & Subsurface Environment (FINSE), an established Instrument facility at UW managed by trained staff and would support the field analytical capabilities of the Wyoming Center for Environmental Hydrology and Geophysics (WyCEHG), a center of excellence in hydro geophysics funded by NSF/EPSCoR. The NMR well logging tool will offer greatly improved spatial ( 0.5 m) and temporal resolution of subsurface hydrological parameters over conventional methods that typically aggregate subsurface hydrological observations over 10s of meters so the knowledge gained has the potential to be transformative and therefore supports NSF mission of promoting the progress of science.. The investigators intend to deploy the NMR tool for studies in vadose zone hydrology of interest to Critical Zone Observatories supported by NSF Division of Earth Sciences and studies of permafrost in the high Arctic; the instrument will be useful for groundwater resource assessment thus promoting the national welfare. The instrument will support hands on experiential learning by students using the NMR tool for studies of regional interest thereby fostering their future employability in fields that routinely engage in subsurface hydrologic studies, another aspect of the proposal that is congruent with NSFs mission of promoting the national welfare.***