In accordance with SO #3423 - The Gulf of America and SO #3424 - Mount McKinley and Landmarks Honoring the Alaskan People, new USGS data releases specific to those named places will utilize the new name Gulf of America and the restored name Mount McKinley. Per USGS practice, historical data will retain the name of the geographic features as they were known at the time the data were originally released.
Data Release
Shorelines Extracted from Landsat Imagery: Cat Island, Mississippi
By Kristy K. Guy
USGS, St. Petersburg, Florida
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 | Metadata (XML format) | Metadata (text format) | Download |
|---|---|---|---|
| cat_lines_individual_dates.zip Line shapefiles of shorelines generated from Landsat satellite images dating from 1984 to 2015. There are 268 shapefiles, one for each date (.shp) |
metadata_cat_landsat_shoreline_lines _individual_dates_19840325_20150523.xml |
metadata_cat_landsat_shoreline_lines _individual_dates_19840325_20150523.txt |
cat_lines_individual_dates.zip (11.8 MB) |
| cat_polys_individual_dates.zip Polygon shapefiles of shorelines generated from Landsat satellite images dating from 1984 to 2015. There are 268 shapefiles, one for each date. These are the same shorelines as in cat_lines_individual_dates.zip but in polygon format (.shp) |
metadata_cat_landsat_shoreline_polys _individual_dates_19840325_20150523.xml |
metadata_cat_landsat_shoreline_polys _individual_dates_19840325_20150523.txt |
cat_polys_individual_dates.zip (13.4 MB) |
| cat_lines_combined_dates.zip A line shapefile of shorelines generated from 268 Landsat satellite images dating from 1984 to 2015. This is one shapefile that is a combination of all the line shapefiles in cat_lines_individual_dates.zip (.shp) |
metadata_cat_landsat_shoreline_lines _combined_dates_19840325_20150523.xml |
metadata_cat_landsat_shoreline_lines _combined_dates_19840325_20150523.txt |
cat_lines_combined_dates.zip (11.1 MB) |
| cat_polys_combined_dates.zip A polygon shapefile of shorelines generated from 268 Landsat satellite images dating from 1984 to 2015. This is one shapefile that is a combination of all the polygon shapefiles in cat_polys_individual_dates.zip (.shp) |
metadata_cat_landsat_shoreline_polys _combined_dates_19840325_20150523.xml |
metadata_cat_landsat_shoreline_polys _combined_dates_19840325_20150523.txt |
cat_polys_combined_dates.zip (12.5 MB) |
Figure 1. Data location map.
Suggested Citation
Guy, K.K., 2015, Shorelines extracted from landsat imagery: Cat Island, Mississippi: U.S. Geological Survey data release, https://doi.org/10.5066/F7JQ0Z3R.