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Long and short-term shoreline intersect points for the northern coast of North Carolina (NCnorth), calculated using the Digital Shoreline Analysis System version 5.1

Dates

Publication Date
Start Date
1848
End Date
2017

Citation

Bartlett, M.K., Farris, A.S., Weber, K.M., and Henderson, R.E., 2023, USGS National Shoreline Change — 2017 lidar-derived mean high water shoreline and associated shoreline change data for coastal North Carolina: U.S. Geological Survey data release, https://doi.org/10.5066/P9HYNUNV.

Summary

The U.S. Geological Survey (USGS) has compiled national shoreline data for more than 20 years to document coastal change and serve the needs of research, management, and the public. Maintaining a record of historical shoreline positions is an effective method to monitor national shoreline evolution over time, enabling scientists to identify areas most susceptible to erosion or accretion. These data can help coastal managers and planners understand which areas of the coast are vulnerable to change. This data release includes one new mean high water (MHW) shoreline extracted from lidar data collected in 2017 for the entire coastal region of North Carolina which is divided into four subregions: northern North Carolina (NCnorth), central [...]

Contacts

Attached Files

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NCnorth_intersects_browse.PNG
“Example of shoreline intersect points for NCnorth”
thumbnail 614.59 KB image/png
Shapefile: NCnorth_intersects_LT.zip
NCnorth_intersects_LT.cpg 5 Bytes
NCnorth_intersects_LT.dbf 4.24 MB
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NCnorth_intersects_LT.shp 581.89 KB
NCnorth_intersects_LT.shx 166.32 KB
Shapefile: NCnorth_intersects_ST.zip
NCnorth_intersects_ST.cpg 5 Bytes
NCnorth_intersects_ST.dbf 979.72 KB
NCnorth_intersects_ST.prj 402 Bytes
NCnorth_intersects_ST.sbn 83.68 KB
NCnorth_intersects_ST.sbx 1.44 KB
NCnorth_intersects_ST.shp 240.67 KB
NCnorth_intersects_ST.shx 68.83 KB

Purpose

This dataset consists of point data created by the Digital Shoreline Analysis System (DSAS) v5.1 at the intersection of shoreline and transect locations. Measurement transects are cast by DSAS from the baseline to intersect shoreline vectors, and the intersect data provide location and time information used to calculate rates of change. These point data contain identification information related to the DSAS transect (TransOrder) as well as the shoreline (ShorelineID and Uncertainty) and proxy-datum bias data (if applicable). They can be used to visually display which shorelines were used in the rate calculations and capture details on the shoreline represented by the intersection. The distances between the reference baseline and each shoreline intersection along a transect are used by the DSAS software to compute the shoreline change metrics.

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