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EAR Transient Electrical Resistivity Imaging (TERI)
Citation:
Ross, R., T. Halihan, J. Fields, T. Tandy, R. Neill, J. Groves, AND D. Beak. EAR Transient Electrical Resistivity Imaging (TERI). Enhanced Aquifer Recharge Stakeholder Update, Ada, OK, June 09, 2021.
Impact/Purpose:
This webinar will inform EPA staff, EPA policymakers, and external stakeholders’ of the types of information obtained from transient electrical resistivity imaging, and potential issues with the implementation of long-term research of EAR systems and research in a rural epikarst and karst setting.
Description:
Enhanced Aquifer Recovery (EAR) conveys overland flow into the subsurface for storage, potential reuse, and to augment water supplies. In this research effort the recharge of overland flow will be examined using transient electrical resistivity (TERI) surveys. The movement of water through epikarst to groundwater using EAR is poorly understood. This research will examine the movement of water through the vadose and saturated zones using transient electrical resistivity imaging techniques applied before and after overland flow events. These results will be compared with changes in groundwater quality in the shallow, intermediate and deep groundwater monitoring network. One of the goals of this EPA research is to understand the temporary storage and movement of groundwater and potential contaminants through the epikarst and karst portions of the aquifer. This presentation will present initial transient electrical resistivity imaging results with implications on water movement as well as potential future TERI monitoring needs.