Reconstructing the geomorphic evolution and sediment budget history of a dynamic barrier island: Anclote Key, Florida
March 1, 2023
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.
Citation Information
Publication Year | 2023 |
---|---|
Title | Reconstructing the geomorphic evolution and sediment budget history of a dynamic barrier island: Anclote Key, Florida |
DOI | 10.1142/9789811275135_0001 |
Authors | Daniel J. Ciarletta, Jennifer L. Miselis, Julie Bernier, Arnell S. Forde, Shannon A. Mahan |
Publication Type | Conference Paper |
Publication Subtype | Conference Paper |
Index ID | 70250020 |
Record Source | USGS Publications Warehouse |
USGS Organization | Geosciences and Environmental Change Science Center; St. Petersburg Coastal and Marine Science Center |
Related
Sediment Data from Vibracores Collected in 2021 From Central Florida Gulf Coast Barrier Islands
In 2021, scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS SPCMSC) conducted ground penetrating radar (GPR) and sediment sampling surveys on barrier islands located along the central Florida Gulf Coast (CFGC), Pinellas County, Florida. This study investigated the past evolution of the CFGC from field sites at Anclote Keys, Caladesi and...
Daniel Ciarletta, Ph.D.
Research Physical Scientist
Research Physical Scientist
Email
Phone
Jennifer L Miselis, Ph.D.
Research Geologist
Research Geologist
Email
Phone
Julie Bernier
Email
Phone
Shannon Mahan
Research Geologist, TRIGA Reactor System Administrator
Research Geologist, TRIGA Reactor System Administrator
Email
Phone
Related
Sediment Data from Vibracores Collected in 2021 From Central Florida Gulf Coast Barrier Islands
In 2021, scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS SPCMSC) conducted ground penetrating radar (GPR) and sediment sampling surveys on barrier islands located along the central Florida Gulf Coast (CFGC), Pinellas County, Florida. This study investigated the past evolution of the CFGC from field sites at Anclote Keys, Caladesi and...
Daniel Ciarletta, Ph.D.
Research Physical Scientist
Research Physical Scientist
Email
Phone
Jennifer L Miselis, Ph.D.
Research Geologist
Research Geologist
Email
Phone
Julie Bernier
Email
Phone
Shannon Mahan
Research Geologist, TRIGA Reactor System Administrator
Research Geologist, TRIGA Reactor System Administrator
Email
Phone