RESPONSE OF INTERTIDAL CREEK GEOMORPHOLOGY AFTER 20 YEARS OF CHANGE AT NORTH INLET, SOUTH CAROLINA
This study focuses on eight intertidal creeks that were mapped and measured in 1997. Approximately two decades later, we re-measured these same eight creeks using a combination of terrestrial laser scanning and drone photogrammetry. By comparing data from 1997 and 2016-2018 we were able to observe how the geomorphology of all eight creeks changed on a decadal time scale. Measurements of length from mouth, width at 1.5 meter intervals along the creek, depth, sinuosity, and percent oyster bottom are compared over the 20 year interval, as well as a 1 year interval for three of the creeks. Additionally, this study focused on how each creek’s substrate affected its rate of change. Three of the creeks had hard substrates composed of oyster shells, while the remaining five had soft substrates of mud. This project is the first to study how substrate affects geomorphological change in North Inlet.