Data Release
Shorelines Extracted from Landsat Imagery: Dauphin Island, Alabama
By Kristy K. Guy
Summary
The deployment of Landsat and other earth-observing satellites within the last few decades has provided an opportunity to observe barrier islands at frequent intervals, often many times a year. A variable of persistent interest as a metric for coastal erosion or change is the shoreline. Shorelines derived from imagery have value to resolve coastal changes. This data release includes shoreline positions extracted from Landsat satellite imagery. The shorelines are released in shapefiles with both line and polygon feature types to support a variety of user needs. The data (lines or polygons) are released as individual shapefiles for each sample date and are also released as combined shapefiles with all dates, again to provide users of these data with more options for selecting data of interest. The methods used to identify the shorelines are presented in Guy (2015).
References
Guy, K.K., 2015, Barrier island shorelines extracted from Landsat imagery: U.S. Geological Survey Open-File Report 2015–1179, 3 p., https://doi.org/10.3133/ofr20151179.
Data
| File Name and Description | Metedata (XML format) | Metadata (text format) | Download |
|---|---|---|---|
| dauphin_lines_individual_dates.zip Line shapefiles of shorelines generated from Landsat satellite images dating from 1984 to 2015. There are 223 shapefiles, one for each date. |
metadata_dauphin_landsat_shoreline_lines_ individual_dates_19840325_20150421.xml |
metadata_dauphin_landsat_shoreline_lines_ individual_dates_19840325_20150421.txt |
dauphin_lines_individual_dates.zip (21.5 MB) |
| dauphin_polys_individual_dates.zip Polygon shapefiles of shorelines generated from Landsat satellite images dating from 1984 to 2015. There are 223 shapefiles, one for each date. These are the same shorelines as in dauphin_lines_individual_dates.zip but in polygon format. |
metadata_dauphin_landsat_shoreline_polys_ individual_dates_19840325_20150421.xml |
metadata_dauphin_landsat_shoreline_polys_ individual_dates_19840325_20150421.txt |
dauphin_polys_individual_dates.zip (23.5 MB) |
| dauphin_lines_combined_dates.zip A line shapefile of shorelines generated from 223 Landsat satellite images dating from 1984 to 2015. This is one shapefile that is a combination of all the line shapefiles in dauphin_lines_individual_dates.zip. |
metadata_dauphin_landsat_shoreline_lines_ combined_dates_19840325_20150421.xml |
metadata_dauphin_landsat_shoreline_lines_ combined_dates_19840325_20150421.txt |
dauphin_lines_combined_dates.zip (21.2 MB) |
| dauphin_polys_combined_dates.zip A polygon shapefile of shorelines generated from 223 Landsat satellite images dating from 1984 to 2015. This is one shapefile that is a combination of all the polygonsshapefiles in dauphin_polys_individual_dates.zip. |
metadata_dauphin_landsat_shoreline_polys_ combined_dates_19840325_20150421.xml |
metadata_dauphin_landsat_shoreline_polys_ combined_dates_19840325_20150421.txt |
dauphin_polys_combined_dates.zip (23 MB) |
Figure 1. Location Map
Suggested Citation
Guy, K.K., 2015, Shorelines Extracted from Landsat Imagery: Dauphin Island, Alabama: U.S. Geological Survey data release, https://doi.org/10.5066/F7028PMP.