Survey Products

The images here are representations of the survey tracklines (figs. 2), DEM map product (fig. 5), and the interferometric backscatter map (fig. 6 and 7), and DEM grid error (fig. 8). The data files are available for download from the Data Downloads page.

TRACKLINES		BATHYMETRY
Figure 2.  Swath bathymetry and sidescan sonar tracklines for the 2013 geophysical survey offshore of Petit Bois Island, Gulf Islands National Seashore, Mississippi. [Click to enlarge].		Figure 7.  50-meter digital elevation model for the 2013 geophysical survey offshore of Petit Bois Island, Gulf Islands National Seashore, Mississippi. [Click to enlarge.]
Figure 5. Interferometric backscatter from the swath system for the 2013 geophysical survey offshore of Petit Bois Island, Gulf Islands National Seashore, Mississippi. [Click to enlarge]		Figure 6. Sidescan sonar acoustic backscatter from the Klein 3900 for the 2013 geophysical survey offshore of Petit Bois Island, Gulf Islands National Seashore, Mississippi. [Click to enlarge]
		Figure 8. Error values representing the difference between the digital elevation model and the value at each sample point. White symbols represent acceptable system error of +/-0.250 meters. [Click to enlarge.]

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