Conference PaperControl of a Single Energetic Event on the Long-term Depth of ClosureRoyer, Elizabeth; Wang, PingWang, Ping; Royer, Elizabeth; Rosati Julie D.The depth of closure (DOC) is defined as the most landward depth seaward of which there is no significant change in bottom elevation. In this paper, the short-term DOC associated with a proximal energetic storm was determined based on time-series beach-offshore profiles and compared to the long-term (20-year) DOC at 5 study sites along Florida coast. At all the profile locations the time-series beach-offshore profiles showed an apparent convergence indicating the presence of a DOC at both the storm and long-term scales. There is no apparent and consistent relationship between the long-term DOC and storm DOC, suggesting that the long-term DOC is not directly controlled by a single energetic storm. The short-term storm DOC demonstrated a higher spatial variation alongshore, as compared to the long-term DOC. Alongshore extent of the study site is not a determining factor for longshore variation. Finetuning a crucial parameter like the DOC would have implications for many coastal engineering and management projects, such as the design of beach nourishment.2023-01-0110465201The Proceedings of the Coastal Sediments 20232883 to 2897https://doi.org/10.1142/9789811275135_02621930451National Science Foundation