The overarching theme of my research is to understand the linkages between the evolution of sedimentary aquifers and the dynamics of groundwater within them. Understanding these linkages will advance models of aquifer heterogeneity, which are critical to predicting aquifer responses to pumping, land use changes, and climate variability. Advances in sedimentology and the increasing appreciation of water’s value and scarcity have opened the door for innovative approaches to characterizing sedimentary aquifers. I combine modern methods in geophysics, hydrogeology, and sedimentology to understand the controls on aquifer size, shape, and heterogeneity. I use integrated sedimentologic-hydrologic models to advance our understanding of regional hydrogeology and improve predictions of groundwater responses to hydrologic perturbations.
3-D architecture and hydrostratigraphy of buried valley aquifers
This project uses airborne electromagnetics to map the detailed spatial distribution of ancient valleys beneath and within glacial deposits of southeast Nebraska. This study is revealing new information on late Cenozoic history of Nebraska and the complexity of aquifers within pre-Illinoian glacial deposits.
Modern assessment of aquifer properties of the High Plains/Ogallala aquifer
This project seeks to develop outcrop analogs to characterize aquifer body geometries and hydrofacies. Geologic units will be mapped in detail to define patterns of aquifer connectivity at various scales. The results will be upscaled and used to inform the mapping of aquifer properties for groundwater models.
Controls on heterogeneity in unit bars of sandy, braided rivers
The aim of this project is to better understand the causes of permeability heterogeneity in sandy braided rivers. Field work was conducted in the summer of 2016 with two undergraduate students. We conducted more than 130 falling-head permeameter tests in an active sand bar of the Loup River in central Nebraska.
We use a variety of basic to sophisticated tools and methods. Below is a list of some of Dr. Korus's research equipment and software.
Mala GX HDR ground-penetrating radar system with 80MHz, 160MHz, 450MHz, and 750MHz antennas
GSSI hand-held multi-frequency electromagnetic induction tool (EMP Profiler)
GeoScene3D geological modeling and visualization software
DJI Phantom 4 unmanned aircraft system
Pix4D drone photogrammetry software
TinyPerm hand-held air permeameter
VibeCore Mini shallow sediment coring device
Laser range finder
Solinst Levelogger with Bluetooth mobile interface
Estwing rock hammer and field notebook