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Large-scale coastal evolution of Louisiana's barrier islands

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Abstract

The prediction of large-scale coastal change is an extremely important, but distant goal. Here we describe some of our initial efforts in this direction, using historical bathymetric information along a 150 km reach of the rapidly evolving barrier island coast of Louisiana. Preliminary results suggest that the relative sea level rise rate, though extremely high in the area, has played a secondary role in coastal erosion over the last 100 years, with longshore transport of sand-sized sediment being the primary cause. Prediction of future conditions is hampered by a general lack of erosion processes understanding; however, an examination of the changing volumes of sand stored in a large ebb-tidal delta system suggests a continued high rate of shoreline retreat driven by the longshore re-distribution of sand.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Large-scale coastal evolution of Louisiana's barrier islands
ISBN:
0872628086
Year Published:
1991
Language:
English
Publisher:
Publ by ASCE
Publisher location:
New York, NY, United States
First page:
1532
Last page:
1546
Number of Pages:
15
Conference Title:
Proceedings of a Specialty Conference on Quantitative Approaches to Coastal Sediment Processes
Conference Location:
Seattle, WA, USA
Conference Date:
25 June 1991 through 27 June 1991