Early Career: Acquisition of Instrumentation to Measure Electrical Resistivity at the Field and Lab Scale

1144043单这笔赠款支持为宾夕法尼亚州立大学地球科学系购买十通道电阻率(ER)系统(IRIS Syscal Pro)。ER对浅层地下电导率的变化很敏感，可用于地下流体含量和成分的空间和时间分辨率观测。由于源电极和接收电极之间的测量电阻记录了沿路径长度的多孔介质和导电流体的平均电学性质，因此测量是对离散的现场采样和从井中观察的有益补充。ER系统将支持一系列研究，包括水文示踪剂运移的远程时间序列监测、对含水层和河流基流之间的溶质运移成像、沙漠生态系统中地下水运移的研究以及通过细菌铁还原作用进行的有机物地下成岩作用的动力学研究。ER系统将支持临界区观测站(页岩山)的研究，并通过为期三周的综合水文地球物理学暑期课程支持研究培训，该课程针对的是来自与宾夕法尼亚州立大学(密歇根州杰克逊州立大学、佐治亚州堡谷州立大学和北卡罗来纳州伊丽莎白城州立大学)合作的三所历史黑人学院和大学的未充分代表的本科生。

1144043SinghaThis grant supports acquisition of an ten channel electrical resistivity (ER) system (IRIS Syscal Pro) for the Department of Geosciences at Penn State University. ER is sensitive to changes in the electrical conductivity of the shallow subsurface and has applications for spatially and temporally resolved observations of subsurface fluid content and composition. As measured resistances between source and receiver electrodes record the average electrical properties of porous media and conductive fluids along the path length, measurements are a useful complement to discrete in situ sampling and observations from wells. The ER system will support a range of research including remote time series monitoring of hydrologic tracer transport, imaging solute transport between aquifers and stream base flow, studies of groundwater transport in desert ecosystems, and studies of the kinetics of subsurface diagenesis of organics via bacterial iron reduction. The ER system will support research at a Critical Zone Observatory (Shale Hills) and research training through a three-week integrated hydrogeophysics summer course aimed at underrepresented undergraduates from three Historically Black Colleges and Universities partnered with Penn State (Jackson State University, MS; Fort Valley State University, GA; and Elizabeth City State University, NC).***