Tropical Storm Isidore and Hurricane Lili: Louisiana barrier shoreline response, preliminary results
Gulf Coast Association of Geological Societies Transactions
By: Asbury Sallenger, Shea Penland, and William Krabill
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Abstract
In a cooperative effort between the U.S. Geological Survey, National Aeronautics and Space Administration, University of New Orleans, and Louisiana's Department of Natural Resources, Louisiana's barrier islands were surveyed with airborne topographic lidar and oblique aerialphotography both before and after the impacts of 2002's Tropical Storm Isidore and Hurricane Lili. The surveys were compared to quantify the magnitudes and patterns of erosion and accretion in both natural areas and areas that had been subjected to major restoration. Wave runup exceeded the elevation of the entire Isles Dernieres barrier chain creating overwash deposits that, in places, were driven landward ~ 300 m. This response was not as severe as observed during Hurricane Andrew in 1992 when the Isles Dernieres were completely and continuously inundated and sand bodies were driven landward on the order of 1 km. Based on a comparison of surveys before and after the combined impacts of Lili and Isidore, the largest shoreline change occurred at the east end of East Island and reached ~ 130 m of erosion.
Suggested Citation
Sallenger, A., Penland, S., and Krabill, W., 2003, Tropical Storm Isidore and Hurricane Lili: Louisiana barrier shoreline response, preliminary results: Gulf Coast Association of Geological Societies Transactions, v. 53, p. 733-740.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Tropical Storm Isidore and Hurricane Lili: Louisiana barrier shoreline response, preliminary results |
| Series title | Gulf Coast Association of Geological Societies Transactions |
| Volume | 53 |
| Year Published | 2003 |
| Language | English |
| Publisher | Gulf Coast Association of Geological Societies |
| Contributing office(s) | Coastal and Marine Geology Program |
| Description | 8 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Gulf Coast Association of Geological Societies Transactions |
| First page | 733 |
| Last page | 740 |
| Country | United States |
| State | Louisiana |
| Other Geospatial | Isles Dernieres |