Bathymetric comparisons adjacent to the Louisiana barrier islands: Processes of large-scale change
Journal of Coastal Research
By: J. H. List, B. E. Jaffe, A. H. Sallenger Jr., and M. E. Hansen
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Abstract
This paper summarizes the results of a comparative bathymetric study encompassing 150 km of the Louisiana barrier-island coast. Bathymetric data surrounding the islands and extending to 12 m water depth were processed from three survey periods: the 1880s, the 1930s, and the 1980s. Digital comparisons between surveys show large-scale, coherent patterns of sea-floor erosion and accretion related to the rapid erosion and disintegration of the islands. Analysis of the sea-floor data reveals two primary processes driving this change: massive longshore transport, in the littoral zone and at shoreface depths; and increased sediment storage in ebb-tidal deltas. Relative sea-level rise, although extraordinarily high in the study area, is shown to be an indirect factor in causing the area's rapid shoreline retreat rates.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Bathymetric comparisons adjacent to the Louisiana barrier islands: Processes of large-scale change |
| Series title | Journal of Coastal Research |
| Volume | 13 |
| Issue | 3 |
| Year Published | 1997 |
| Language | English |
| Contributing office(s) | Woods Hole Coastal and Marine Science Center |
| Description | 9 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Coastal Research |
| First page | 670 |
| Last page | 678 |
| Country | United States |
| State | Louisiana |
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