2007 and 2008. National Center for Ecological Analysis and Synthesis. This raster layer represents global commercial shipping activity including location and travel routes. Commercial shipping activity can lead to shi... Science.
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2007. United States. National Oceanic and Atmospheric Administration, United States. Department of Commerce, United States. National Ocean Service, and Coastal Services Center (U.S.). This polygon shapefile contains time series data for the coastal regions of the Northeastern United States in 2007. This data product was created b... Coastal Services Center (U.S.).