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Reconstructing the geomorphic evolution and sediment budget history of a dynamic barrier island: Anclote Key, Florida

By: , , , , and 
https://doi.org/https://doi.org/10.1142/9789811275135_0001

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Abstract

Decadal to centennial variations in sediment availability are a primary driver of coastal change within barrier systems. Models help explore how barrier morphology relates to past changes in magnitude of sediment availability, but this requires insights and validation from field efforts. In this study, we investigate the progradation of Anclote Key via its morphostratigraphy, a presently dynamic barrier on the Central Florida Gulf Coast. The results of our field efforts, including vibracores, ground-penetrating radar scans, and optically stimulated luminescence dating of sediments, reveal that Anclote Key has gone through at least two phases of sustained island-scale progradation, with an intervening episode of transgression followed by relative stability. We show that these shifts were likely driven by relatively small changes in shoreface sediment availability owing to the island’s limited accommodation and suggest that Anclote Key may have been relatively isolated from the alongshore sediment supply of nearby barriers prior to the late 20th century.

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Publication type Conference Paper
Publication Subtype Conference Paper
Title Reconstructing the geomorphic evolution and sediment budget history of a dynamic barrier island: Anclote Key, Florida
DOI https://doi.org/10.1142/9789811275135_0001
Year Published 2023
Language English
Publisher World Scientific
Contributing office(s) Geosciences and Environmental Change Science Center, St. Petersburg Coastal and Marine Science Center
Description 11 p,
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title The Proceedings of the Coastal Sediments 2023
First page 1
Last page 11
Country United States
State Florida
Other Geospatial Anclote Key
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