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Spatial Extent of Data

USGS Data Source

USGS Thesaurus Keywords

land use and land cover, geospatial datasets, coastal ecosystems, image collections, multispectral imaging, contouring, geomorphology

ISO 19115 Topic Category

geoscientificInformation, imageryBaseMapsEarthCover

Other Subject Keywords

spectral indices, shoreline, sand, Otsu thresholding, barrier island, Landsat, vegetated

Place Keywords

Chandeleur Islands, Louisiana, Gulf of Mexico

Coastal Features Extracted from Landsat Satellite Imagery, Northern Chandeleur Islands, Louisiana, 1984-2019

The data release (Bernier, 2021) associated with this metadata record serves as an archive of coastal land-cover and feature datasets derived from Landsat satellite imagery at the northern Chandeleur Islands, Louisiana. To minimize the effects of tidal water-level variations, 75 cloud-free, low-water images acquired between 1984 and 2019 were analyzed. Water, bare earth (sand), vegetated, and intertidal land-cover classes were mapped from Hewes Point to Palos Island using successive thresholding and masking of the modified normalized difference water index (mNDWI), the normalized difference bare land index (NBLI), and the normalized difference vegetation index (NDVI). Vector shoreline, sand, and vegetated feature extents were extracted for each image by contouring the spectral indices using the calculated threshold values. The geographic information system (GIS) data files with accompanying formal Federal Geographic Data Committee (FGDC) metadata can be downloaded from https://doi.org/10.5066/P9HY3HOR.

Get Data and Metadata
Author(s) Julie C Bernier orcid, Breanna N Williams orcid, Jennifer L Miselis orcid
Publication Date 2021-09-21
Beginning Date of Data 1984-03-25
Ending Date of Data 2019-01-10
Data Contact
Julie C. Bernier
DOI https://doi.org/10.5066/P9HY3HOR
Citation Bernier, J.C., Williams, B.N., and Miselis, J.L., 2021, Coastal Features Extracted from Landsat Satellite Imagery, Northern Chandeleur Islands, Louisiana, 1984-2019: U.S. Geological Survey data release, https://doi.org/10.5066/P9HY3HOR.
Metadata Contact
Julie C. Bernier
Metadata Date 2021-09-21
Related Publication
Citations of these data

Loading https://doi.org/10.3390/rs13183779
Access public
License http://www.usa.gov/publicdomain/label/1.0/
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Harvest Source: Coastal and Marine Geoscience Data System
Harvest Date: 2025-03-13T14:19:18.886Z