Advancing hydrostratigraphic methods to improve monitoring and models of groundwater flow in fractured rock

Department of Hydrology and Atmospheric Sciences
 
* Change in time to 12 pm * Thursday, September 30, 2021
Available via zoom only
Contact the department for zoom details or to subscribe to the seminar email list
 
Jessica Meyer
Assistant Professor, Department of Earth and Environmental Sciences, University of Iowa

Abstract

A key component of all groundwater investigations is characterizing the three-dimensional distribution of hydraulic conductivity contrasts in the subsurface. Portions of the flow domain with contrasting hydraulic conductivities are then conceptualized as hydrostratigraphic (or hydrogeologic) units. These units serve as the framework for conceptual and numerical models and guide the placement of monitoring well screens used to collect the hydraulic data necessary for parameterizing and calibrating numerical models. Adequate representation and prediction of groundwater flow processes requires that hydrostratigraphic units be delineated on the basis of hydraulic information. However, in practice, delineation of hydrostratigraphic units is often based on data that is indirect with respect to hydraulic properties (lithostratigraphy and/or geophysics) or blended hydraulic data. In this presentation I will introduce a novel approach to hydrostratigraphy which utilizes high resolution hydraulic head profiles combined with sequence stratigraphy to create a hydraulically calibrated geologic framework for a contaminated sedimentary rock site in Cottage Grove, Wisconsin. This hydrostratigraphic framework is now being used to improve the design of site infrastructure for characterization and monitoring at the site and is the foundation for numerical models needed to assess potential remediation technologies.

Bio

Image Dr Jessica Meyer Assistant Professor

Dr. Meyer is an Assistant Professor from the Department of Earth and Environmental Sciences, University of Iowa. She holds a Ph.D. in Hydrogeology from the University of Guelph. Dr. Meyer is a physical hydrogeologist who looks for creative ways to collect and interpret field data to provide insight into flow system conditions. She is particularly interested in advancing our understanding of the relationship between the hydraulic and geologic structure of the subsurface in heterogeneous geologic settings.