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repdate=September 2009| | repdate=September 2009| | ||
reptype=Final report| | reptype=Final report| | ||
title=Barrier Island Migration Over a Consolidating Substrate| | title=Barrier Island Migration Over a Consolidating Substrate| | ||
authors=Julie Dean Rosati| | authors=Julie Dean Rosati| | ||
repnumber=ERDC/CHL TR-09-8| | repnumber=ERDC/CHL TR-09-8| | ||
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Vicksburg, MS 39180-6199 | Vicksburg, MS 39180-6199 | ||
</p>| | </p>| | ||
abstract= | abstract= | ||
Barrier islands that overlie a compressible substrate load and consolidate the underlying | Barrier islands that overlie a compressible substrate load and consolidate the underlying | ||
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magnitude of the load, duration of load, and characteristics of the substrate. | magnitude of the load, duration of load, and characteristics of the substrate. | ||
The result is an increase in the overwash, migration, breaching, and segmentation | The result is an increase in the overwash, migration, breaching, and segmentation | ||
of these islands. | of these islands.<br/> | ||
This research determined the degree to which consolidation affects the evolution of barrier | This research determined the degree to which consolidation affects the evolution of barrier | ||
island systems overlying a poorly consolidated substrate, both for natural islands and those that have been restored with an infusion of sand from an external source. A | island systems overlying a poorly consolidated substrate, both for natural islands and | ||
those that have been restored with an infusion of sand from an external source. A | |||
two-dimensional (cross-shore) mathematical model was developed, tested with field data, | |||
and then applied to evaluate how a compressible substrate modifies long-term barrier | |||
island evolution. The model spans time durations of years to decades and represents | |||
cross-shore evolution of a sandy barrier island due to erosion, runup, overwash, | |||
migration, and time-dependent consolidation of the underlying substrate due to | |||
loading by the island.| | |||
subjectterms1=Barrier island migration| | |||
subjectterms2=Numerical modeling | |||
Storm reponse | |||
Deltaic coasts| | |||
subjectterms3=Consolidation | |||
Beach Nourishment | |||
Beach fill| | |||
numpages=218| | |||
}} | |||
Latest revision as of 18:36, 22 October 2010
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