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Dynamic modeling of barrier island response to hurricane storm surge under future sea level rise

August 1, 2018

Sea level rise (SLR) has the potential to exacerbate the impacts of extreme storm events on the coastal landscape. This study examines the coupled interactions of SLR on storm-driven hydrodynamics and barrier island morphology. A numerical model is used to simulate the hydrodynamic and morphodynamic impacts of two Gulf of Mexico hurricanes under present-day and future sea levels. SLR increased surge heights and caused overwash to occur at more locations and for longer durations. During surge recession, water level gradients resulted in seaward sediment transport. The duration of the seaward-directed water level gradients was altered under SLR; longer durations caused more seaward-directed cross-barrier transport and a larger net loss in the subaerial island volume due to increased sand deposition in the nearshore. Determining how SLR and the method of SLR implementation (static or dynamic) modulate storm-driven morphologic change is important for understanding and managing longer-term coastal evolution.

Citation Information

Publication Year 2018
Title Dynamic modeling of barrier island response to hurricane storm surge under future sea level rise
DOI 10.1007/s10584-018-2245-8
Authors Davina Passeri, Matthew V. Bilskie, Nathaniel G. Plant, Joseph W. Long, Scott C. Hagen
Publication Type Article
Publication Subtype Journal Article
Series Title Climatic Change
Series Number
Index ID 70199099
Record Source USGS Publications Warehouse
USGS Organization St. Petersburg Coastal and Marine Science Center