Open-File Report 03-265 Figure 4

Open-File Report 03-265

Grand Canyon Riverbed Sediment Changes, Experimental Release of September 2000 - A Sample Data Set

Figure 4. Sidescan sonar images from the pre-release survey R3-00-GC of the "bp1" (below Paria) segment of the Colorado River. Lighter shades indicate low sonar reflectance and darker shades indicate high sonar reflectance. (a) Raw data. (b) MIPS-processed data. Letters indicate same feature before and after processing. Area in rectangle enlarged in Figures 6, 7, and 8.

raw and processed sidescan sonar images

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