The
study was designed to monitor morphology of the
beach system along approximately 25 miles of
Bogue Banks, placing special emphasis on the
Phase I Pine Knoll Shores/Indian Beach nourishment
project that was completed in April, 2002. The
overarching goal of the project was to provide
a basic framework and initial level of understanding
of island behavior and nourishment performance
that the county could use in designing future
projects and in determining long-term costs for
those projects. During the course of the study,
it became clear that project data could also
provide important background information for
FEMA, the U.S. Army Corps of Engineers and the
North Carolina Division of Coastal Management.
This study utilized state-of-the-art technology,
specialized mapping techniques and geographic
information systems to examine the following
goals:
- Collect high-density
shore-normal and shore parallel survey data
to create 3-D terrain models
that maximize the potential for interpolation
between profile stations
- Use the gridded
surfaces to extract a highly accurate shoreline
position relative to mean
high water (MHW) using a datum-derived (as
opposed to a wet/dry line) position based
on the 19-year
tidal epoch
- Assess beach
and nearshore volume changes at previously-established
profiling stations spaced,
on average, 1000 ft apart
- Identify important
morphological trends that will provide insight
into sediment transport,
as well as onshore, offshore and longshore
sediment budgets
CLICK HERE FOR BACKGROUND INFORMATION
CLICK HERE FOR RESULTS |
