Hindcast of Hurricane Sally impacts on barrier islands in the Gulf of Mexico
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Abstract
We performed XBeach and ADIRC+SWAN model simulations of Hurricane Sally over Dauphin and Petit Bois Islands off the Alabama-Mississippi coast to evaluate the morphologic response. Simulated water levels compared well with NOAA tide gauge observations to the east of Dauphin Island with a high model skill of 0.9. In addition, the XBeach model results of water levels, mean current speeds and significant wave heights agreed with ADCIRC+SWAN simulations near the offshore boundary and in the channel. Qualitative comparisons between the XBeach simulations and post-storm lidar observations confirmed model predictions of overwash. However, XBeach predicted minor breaches in Dauphin Island, which were not observed. This effort is part of a larger project in which several hydrodynamic and morphodynamic models will be coupled to produce hindcasts over a 15-year period for a larger region along the coast. These evaluations will provide local managers with strategic tools to make decisions about various coastal restoration alternatives.
Suggested Citation
Frank-Gilchrist, D.P., Passeri, D., Bilskie, M.V., 2023, Hindcast of Hurricane Sally impacts on barrier islands in the Gulf of Mexico, in The proceedings of the coastal sediments 2023, New Orleans, LA, April 11-15, 2023, p. 2220-2227, https://doi.org/10.1142/9789811275135_0204.
Study Area
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Hindcast of Hurricane Sally impacts on barrier islands in the Gulf of Mexico |
| DOI | 10.1142/9789811275135_0204 |
| Publication Date | March 23, 2023 |
| Year Published | 2023 |
| Language | English |
| Publisher | World Scientific |
| Contributing office(s) | St. Petersburg Coastal and Marine Science Center |
| Description | 8 p. |
| Larger Work Title | The proceedings of the coastal sediments 2023 |
| First page | 2220 |
| Last page | 2227 |
| Conference Title | Coastal Sediments 2023 |
| Conference Location | New Orleans, LA |
| Conference Date | April 11-15, 2023 |
| Country | United States |
| State | Alabama, Mississippi |
| Other Geospatial | Dauphin and Petit Bois Islands |