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Spatial Extent of Data

USGS Data Source

USGS Thesaurus Keywords

coastal processes, geology, unconsolidated deposits, geomorphology, lidar, erosion

ISO 19115 Topic Category

environment, boundaries, oceans, geoscientificInformation, elevation

Other Subject Keywords

Shoreline, DSAS, Accretion, Linear Regression Rate, St. Petersburg Coastal and Marine Science Center, Mean High Water (MHW), Vectorization, Historic Shoreline, Long-Term Shoreline Change Rate, Coastal, Shoreline Change, Wet Dry Line (WDL), Georeferenced Aerial Imagery, U.S. Geological Survey, USGS, SPCMSC, Digital Shoreline Analysis System (DSAS), Transects

Place Keywords

Gulf of Mexico, Dauphin Island, AL, USA, Alabama

Transects_BackBarrier.shp - Digital Shoreline Analysis System version 4.3 Transects with Linear Regression Rate Calculations for the Back-Barrier (North-Facing) coast of Dauphin Island, Alabama.

Rates of shoreline change for Dauphin Island, Alabama were generated for three analysis periods, using two different shoreline proxy datasets. Mean High Water line (MHW) shorelines were generated from 14 lidar datasets (1998-2014) and Wet Dry Line (WDL) shorelines were digitized from ten sets of georeferenced aerial images (1940-2015). Rates of change were generated for three groups of shorelines: MHW (lidar), WDL (aerial) and MHW and WDL shorelines combined. These data will aid in developing an understanding of the evolution of the barrier island position, size and shape as well as documenting spatially-variable patterns in erosion and accretion of different sections of the island.

Get Data and Metadata
Author(s) Rachel E Henderson orcid, Paul R. Nelson orcid, Joseph W. Long orcid, Christopher G Smith orcid
Publication Date 2017-06-16
Beginning Date of Data 1940-10-27
Ending Date of Data 2015-11-12
Data Contact
Rachel E. Henderson
DOI https://doi.org/10.5066/F7T43RB5
Citation Henderson, R.E., Nelson, P.R., Long, J.W., and Smith, C.G., 2017, Transects_BackBarrier.shp - Digital Shoreline Analysis System version 4.3 Transects with Linear Regression Rate Calculations for the Back-Barrier (North-Facing) coast of Dauphin Island, Alabama.: U.S. Geological Survey data release, https://doi.org/10.5066/F7T43RB5.
Metadata Contact
Rachel Henderson
Metadata Date 2020-10-13
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Citations of these data

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License http://www.usa.gov/publicdomain/label/1.0/
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Harvest Source: Coastal and Marine Geoscience Data System
Harvest Date: 2025-01-06T09:34:50.952Z