Acquisition of an Electrical Resistivity System to Monitor Hydrologic Impacts of Climate and Land Use Changes and to Image Subsurface Transport and Density Driven Flow

这个奖项是根据2009年《美国复苏和再投资法案》(公法111-5)资助的。该合同将为400电极电阻率数据收集系统提供支持。它将配备2个控制单元(一个现场和一个实验室)、电极的电子寻址卡、现场安装设备和服务以及控制软件。这些设备将立即用于提案中概述的研究。预计它将有至少五年的“寿命”，在此期间它将被纳入未来的项目。将制定一份使用和维护仪器的程序文件，并分发给用户和学生。该仪器将被用来跟踪水和溶质在饱和和非饱和土层和区域中的运动。该设备将允许PI在不同的时间和空间尺度上进行测量(取决于电极的安装方式)。该设备将允许在地下水和卫气带进行准确的示踪剂追踪。数据将加强对根区动态、生物物理含水层过程和陆地水循环的研究。研究将在自然和农业环境以及干旱环境(阿联酋)进行。数据与人类面临的土地和水使用问题有关。在更广泛的影响中，人的影响问题是首要的。对人类来说，水现在是，将来也将越来越是一个有争议的问题。从业人员、利益攸关方和相关机构将受益于所收集数据的分辨率和相关性的提高，并将其用于缓解或最佳管理做法。该仪器将纳入学生的研究和培训。***

0930022Van Dam"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)." This award will provide support for a 400 electrode resistivity data collection system. It will be fitted with 2 control units (one field and one laboratory), electric addressing cards for the electrodes, field installation equipment and service, and control software. The equipment will be immediately used for the research outlined in the proposal. It is expected to have at least a five year "lifespan" in which it will be incorporated into future projects. A procedures document will be formulated for use and care of the instrumentation and disseminated to users and students. The instrumentation will be used to track water and solute movement through saturated and unsaturated soil horizons and zones. The equipment will allow the PIs to make measurements at various temporal and spatial scales (depending on how electrodes are installed). The equipment will allow accurate tracer tracking in groundwater and vadoze zone. Data will enhance studies on root-zone dynamics, biophysical aquifer processes, and the terrestrial water cycle. Studies will be conducted in natural and agricultural settings as well as arid environments (UAE). Data are relevant to land and water use issues facing humankind. Human impact issues are foremost in broader impacts. Water is and will increasingly be a contentious issue for humanity. Practitioners, stakeholders and relevant agencies will benefit from the increased resolution and relevance of collected data and use them for mitigation or best management practices. The instrumentation will be incorporated into student research and training. ***