Interpretation of the Duluth-Superior Barrier System : Analysis Through Models and Ground Penetrating Radar Data

Abstract

Barrier Island geomorphology is a complex subject due to the various coastal environments and associated processes where barriers form, including variations in sediment supply and sea level. The Duluth-Superior Barrier System (DSBS), home to the Duluth Seaway Port, has received little investigation from scientists. Past UW- Eau Claire research students collected ground penetrating radar (GPR) data from two spit components that compose the system. After a review that compiled models of formation and stratigraphy of previously studied marine and fresh water barrier systems, the study presents the interpretation of the DSBS through processing and analyzing previously collected GPR field data.