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Marsh change dataset

Dates

Publication Date
Start Date
2000
End Date
2015

Citation

Rangoonwala, Amina, Riter, J.C.A., Kearney, M.S., and Ramsey, E.W., III, 2017, Analysis of the effect of Hurricane Sandy on New Jersey Atlantic coastal marshes based on landsat thematic mapper and operational land imager data: 2000-2015: U.S. Geological Survey data release, https://doi.org/10.5066/F7D50K4W.

Summary

The change detection data is the classified difference in the percentage of vegetation on the July 14, 2011 Landsat Thematic Mapper(TM) data set collected before Hurricane Sandy and the July 19, 2013 Landsat Operational Land Imager (OLI)data set collected after Hurricane Sandy. Hurricane Sandy made landfall near Brigandine, New Jersey on October 29, 2012. The actual difference in the percentage of vegetation is used in the calculation, not the three-class classification that is the basis of the Marsh Surface Condition Index data. The eleven classes consist of five classes (5-20%,>20%-40%,>40%-60%,>60%-80%,>80%)with decreases in the percentage of vegetation cover after Hurricane Sandy, Three classes (5-20%,>20%-40%,>40%-60%)with increases [...]

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Attached Files

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Extension: 2011-0714-2013-0719-marsh-chg-map-11-04-2016_lyr.zip
2011-0714-2013-0719-marsh-chg-map-11-04-2016.lyr.tfw 92 Bytes
2011-0714-2013-0719-marsh-chg-map-11-04-2016.lyr.tif 1.07 MB
2011-0714-2013-0719-marsh-chg-map-11-04-2016.lyr.tif.vat.dbf 1.14 KB
2011-0714-2013-0719-marsh-chg-map-11-04-2016.lyr.tif-ColorRamp.SLD 2.08 KB

Purpose

The purpose of the change detection data product is to identify those areas of the New Jersey intracoastal marshes that may have been affected by Hurricane Sandy, October 29, 2012. Decreases and increases in the percentage of marsh vegetation are illustrated on the data in warm and cool colors respectively. White indicates no or very little change. The percentage of marsh vegetation was derived from spectral unmixing composite Normalized Difference Vegetation Index, Normalized Difference Water Index, and Normalized Difference Soil Index data derived from Landsat TM and OLI (Path 014 and Rows 32 and 33) surface reflectance data sets as described for the Marsh Surface Condition Index Maps.

Additional Information

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