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shoreline, inletLines: Shoreline polygons and tidal inlet delineations: Cobb Island, VA, 2014

Dates

Publication Date
Start Date
2013-11
End Date
2014-06

Citation

Sturdivant, E.J., Zeigler, S.L., Gutierrez, B.T., and Weber, K.M., 2019, Barrier island geomorphology and shorebird habitat metrics–Sixteen sites on the U.S. Atlantic Coast, 2013–2014: U.S. Geological Survey data release, https://doi.org/10.5066/P9V7F6UX.

Summary

Understanding how sea-level rise will affect coastal landforms and the species and habitats they support is critical for crafting approaches that balance the needs of humans and native species. Given this increasing need to forecast sea-level rise effects on barrier islands in the near and long terms, we are developing Bayesian networks to evaluate and to forecast the cascading effects of sea-level rise on shoreline change, barrier island state, and piping plover habitat availability. We use publicly available data products, such as lidar, orthophotography, and geomorphic feature sets derived from those, to extract metrics of barrier island characteristics at consistent sampling distances. The metrics are then incorporated into predictive [...]

Contacts

Attached Files

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cobb14_inletLines.cpg 5 Bytes
cobb14_inletLines.dbf 106 Bytes
cobb14_inletLines.prj 424 Bytes
cobb14_inletLines.sbn 164 Bytes
cobb14_inletLines.sbx 124 Bytes
cobb14_inletLines.shp 276 Bytes
cobb14_inletLines.shx 116 Bytes
shoreline_asis_browse.png
“Example shoreline polygon (blue) and inlet delineation (red). This example is...”
thumbnail 265.98 KB
Shapefile: cobb14_shoreline.zip
cobb14_shoreline.cpg 5 Bytes
cobb14_shoreline.prj 424 Bytes
cobb14_shoreline.sbn 132 Bytes
cobb14_shoreline.sbx 116 Bytes
cobb14_shoreline.shp 50.88 KB
cobb14_shoreline.shx 108 Bytes
cobb14_shoreline.dbf 86 Bytes

Purpose

The shoreline polygons (cobb14_shoreline.shp) are a generalized delineation of the mean high water (MHW) position on the seaward face of the barrier and mean tidal level (MTL, average of MHW and mean low water) position on the inland face. They delineate the shoreline for the purposes of this study. These polygons were used to convert the transects to 5-m points and to measure island width, distance to inlet from each transect, and position of the shoreline (see larger work). In addition, the inlet delineation polylines (cobb14_inletLines.shp) use single straight line segments to roughly locate each side of tidal inlets for the barrier study area. These lines were used (1) to designate the transition between ocean-facing and land-facing sides of the barrier and (2) to measure the distance to tidal inlet in the 5-m points dataset (see larger work). They were created manually to cross the MHW contour line on each side of a tidal inlet within the study area.

Additional Information

Shapefile Extension

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