| 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. |
| Genre: | Article |
| ProdID: | 70019762 |
| Citation Author: | List, J. H.; Jaffe, B. E.; Sallenger, Jr. , A. H.; Hansen, M. E. |
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| Citation End Page: | 678 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Coastal Research |
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| Citation Number Of Pages: | 9 |
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| Citation Search Results Text: | Bathymetric comparisons adjacent to the Louisiana barrier islands: Processes of large-scale change; 1997; Article; Journal; Journal of Coastal Research; List, J. H.; Jaffe, B. E.; Sallenger, Jr. , A. H.; Hansen, M. E. |
| Citation Start Page: | 670 |
| Citation Volume: | 13 |
| Citation Year: | 1997 |
| Type: | citation/reference |
| Text: | Bathymetric comparisons adjacent to the Louisiana barrier islands: Processes of large-scale change; 1997; Article; Journal; Journal of Coastal Research; List, J. H.; Jaffe, B. E.; Sallenger, Jr. , A. H.; Hansen, M. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 1 Jan 1997 00:00 -0600 |
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