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2020 hurricane impact assessment for the northern Gulf of Mexico: Hurricane Sally and Hurricane Zeta

S. McGill, C. Sylvester, L. Dunkin, E. Eisemann, and J. Wozencraft, 2021. “2020 hurricane impact assessment for the northern Gulf of Mexico: Hurricane Sally and Hurricane Zeta”, Shore & Beach, 89(2), 56-64.

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http://doi.org/10.34237/1008927

2020 hurricane impact assessment for the northern Gulf of Mexico: Hurricane Sally and Hurricane Zeta
S. McGill(1), C. Sylvester(2), L. Dunkin(3), E. Eisemann(4), and J. Wozencraft(5)
U.S. Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory,
3909 Halls Ferry Road, Vicksburg, MS 39180, USA
1) sean.p.mcgill@usace.army.mil; 2) charlene.s.syvester@usace.army.mil; 3) lauren.m.dunkin@usace.army.mil;
4) eve.r.eisemann@usace.army.mil; and 5) jennifer.m.wozencraft@usace.army.mil

Regional-scale shoreline and beach volume changes are quantified using the Joint Airborne Lidar Bathymetry Technical Center of Expertise’s digital elevation model products in a change detection framework following the passage of the two landfalling hurricanes, Hurricanes Sally and Zeta, along the northern Gulf Coast in late fall 2020. Results derived from this work include elevation change raster products and a standard set of beach volume and shoreline change metrics. The rapid turn-around and delivery of data products to include volume and shoreline change assessments provide valuable information about the status of the coastline and identification of areas of significant erosion or other impacts, such as breaching near Perdido Key, FL, from Hurricane Sally’s impact. These advanced change detection products help inform sediment budget development and support decisions related to regional sediment management and coastal storm risk management.

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