Earth and Planetary Sciences
8 years ago

Barrier island in North Carolina transitioning from regressive to transgressive due to erosion and storms.

Marine Geology
Transition of a regressive to a transgressive barrier island due to back-barrier erosion, increased storminess, and low sediment supply: Bogue Banks, North Carolina, USA
Emily A. Timmons, Antonio B. Rodriguez, Christopher R. Mattheus, Regina DeWitt

Paper Summary

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Back-barrier erosion, storms, and low sediment supply can cause a barrier island to transition from wide and high to narrow and low, leading to overwash and inlet formation. Bogue Banks in North Carolina shows both regressive and transgressive segments, with evidence of past sediment sources and sea-level changes. The island started regressing around 3000 years ago when sea-level rise slowed down, and the central narrow section used to be wider and progradational before 1500 years ago.