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Using topographic lidar data to delineate the North Carolina Shoreline

By:
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DOI: 10.1061/40926(239)144

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Abstract

In North Carolina, shoreline change rates are an important component of the state's coastal management program. To enhance methods of measuring shoreline change, the NC Division of Coastal Management (DCM) is considering using mean high water (MHW) shorelines extracted from lidar data together with traditional wet/dry shorelines digitized from aerial photography. To test their compatibility, a wet/dry line and MHW shoreline derived from a concurrent 2004 oceanfront photography and lidar dataset were compared along a distance of 244 km. Results show that the MHW shoreline was seaward of the wet/dry shoreline by 2.82 m on average, and that this offset biased shoreline change rates by an average of 0.05 m/yr. The offset was greatest on low-sloping beaches experiencing higher water levels at the time of photography, but overall was small enough to suggest that the MHW shoreline can be a reliable substitute for the wet/dry shoreline.

Geospatial Extents

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Using topographic lidar data to delineate the North Carolina Shoreline
ISBN:
0784409269; 9780784409268
DOI:
10.1061/40926(239)144
Year Published:
2007
Language:
English
Publisher:
American Society of Civil Engineers
Contributing office(s):
Coastal and Marine Geology Program
Description:
14 p.
Larger Work Type:
Book
Larger Work Subtype:
Conference publication
First page:
1837
Last page:
1850
Number of Pages:
14
Conference Title:
6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes
Conference Location:
New Orleans, LA
Country:
United States
State:
North Carolina