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repdate=September 2009|
repdate=September 2009|
reptype=Final report|
reptype=Final report|
datecovered=|
title=Barrier Island Migration Over a Consolidating Substrate|
title=Barrier Island Migration Over a Consolidating Substrate|
subtitle=|
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>|
sponsoracro=|
sponsornumber=|
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