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Delta Change (D2) Project
Data Products
Funding from NOAA/NESDIS Earth Science Data and Information Management Program (ESDIM)
Global Map Delta Boundary Files Landsat scene mosaics
Landsat composit images
About The READ Deltas Change Project
The Deltas Change project was established by the Regional Ecosystems Assessment Data (READ) pilot project, funded by NOAA/ESDIM. Its objective was to produce database for deltas of the world to begin studies of ecosystem service vulnerability. Read more.
A series of data files were produced by the NOAA Natioinal Geophysical Data Center (NGDC) and University of Colorado Cooperative Institute for Research in the Environmental Sciences (CIRES). These are described and linked here for download to participants in the World Deltas Network. They include:
- Global Map and Attribute Table
- Area of Interest" boundaries
- Landsat scene mosaics for 1980, 1990, and 2000; each band
- Composite Images for 1980, 1990, and 2000
DOWNLOAD FILES
Download files using your browser interface.
Global Map and Attributes
This is a global map of all 143 deltas in the WDN, which delta locations represented in a GIS point data layer. Each location is linked to a record in the attribute table giving statistics about the delta. |
Delta Boundaries
These are vector GIS boundary files for deltas in the World Deltas Database, which define the "Area of Interest" (AOI) for the purposes of the WDN. These boundaries are intended to be the standard area used to subset spatial data to add to the WDN and WDD. They are in easy-to-use formats (Idrisi/Vector and ESRI/Shapefile). There is also a .jpg image showing the boundary on a relief image for reference. To use these boundary files, convert them to raster 1-0 mask files in any GIS or Remote Sensing software package, and multiply them by the raster data layer you wish to extract data from. |
Landsat Mosaic Scenes
These are complete landsat mosaics retaining the original band structure (all 7 or 8 bands, depending on which year it is). The original Landsat scenes were combined to produce a seamless coverage for the delta Area of Interest and then subset to the AOI boundary (see left). Appropriate atmospheric corrections and color balancing were applied to produce relatively consistent images that can be used for modeling and classification studies. |
Landsat Composite Images
Bands 1-3, the visible bands, were composited to produce a true-color image for each delta, using the Landsat mosaics described above. |
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