I perform research in the geoenvironmental subfield of geological engineering, focusing on processes in shallow, heterogeneous, geologic environments in Earth's Critical Zone that govern aquifer recharge and groundwater quality. I endeavor to use knowledge gained from my research to develop and implement engineering solutions for maintaining and enhancing groundwater quantity and quality while fostering sustainable development within a wide range of geoenvironmental challenges facing society.
Below are some recent studies for which I was the Principal Investigator at the U.S. Geological Survey. Current research interests at the University of Mississippi include data-driven and physics-based simulation, critical zone processes, contaminant transport and fate, biogeochemistry, cyanobacterial toxins, and green infrastructure. For further details on my more recent research, please see my ResearchGate Profile and my University of Mississippi Research Profile.
Floridan Aquifer System Groundwater Availability Study –
The primary objectives of the study are to quantify current groundwater resources, evaluate how groundwater resources have changed over time, and provide tools to better understand responses of the Floridan aquifer system to stresses from future human and environmental uses. This research is currently being continued by scientists at the U.S. Geological Survey Caribbean-Florida Water Science Center as part of the Groundwater Resources Program.
Quantification of natural and anthropogenic effects
in groundwater and lake-level data in Central Florida Using Data Mining –
The primary objectives of the study were to (1) identify and quantify both natural and anthropogenic effects in historical groundwater-level, spring flow, and lake-level data by using artificial neural networks (ANNs) and other data-mining techniques, and (2) develop a decision support system (DSS) composed of multiple site-specific ANN models to predict groundwater levels, spring flows, and lake levels that may be used to evaluate scenarios of interest to the area's water managers. This research was conducted in collaboration with Ed Roehl and Ruby Daamen at Advanced Data Mining International.
and Transformation beneath Stormwater Infiltration Basins in Karst Areas, Marion County, Florida
The primary objectives of the study were to (1) identify and evaluate the natural processes (physical, chemical, and biological) that control the nitrogen cycle in soil and groundwater beneath stormwater infiltration basins, and (2) develop, implement, and monitor a new stormwater infiltration best management practice for nutrient (nitrogen and phosphorus) reduction. This research was conducted in collaboration with Dr. Ni-Bin Chang and Dr. Martin Wanielista at the University of Central Florida Stormwater Management Academy.
Transport of the Cyanotoxins Microcystin-LR
and Cylindrospermopsin in Groundwater beneath Stormwater Ponds –
The objective of the study was to investigate the potential for transport of microcystin-LR and cylindrospermopsin (toxins produced by cyanobacteria, also called blue-green algae) in groundwater by using two vertical, downflow columns packed with sand to simulate typical stormwater pond sediment in Florida. This research was conducted in collaboration with Dr. Martin Wanielista and Dr. Ni-Bin Chang at the University of Central Florida Stormwater Management Academy and Dr. Keith Loftin at the U.S. Geological Survey Organic Geochemistry Research Laboratory.