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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.

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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
Contributing office(s) Woods Hole Coastal and Marine Science Center
Description 15 p.
Larger Work Title Coastal Sediments '91; Volume 2
First page 1532
Last page 1546
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
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