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Open-File Report 2012-1258

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High-Resolution Swath Interferometric Data Collected within Muskeget Channel, Massachusetts

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Map showing acoustic-backscatter intensity collected within the vicinity of Muskeget Channel, Massachusetts, during a survey conducted in October 2010. Backscatter intensity is an acoustic measure of the hardness and roughness of the sea floor. In general, high values (light tones) represent rock, boulders, cobbles, gravel, and coarse sand. Low values (dark tones) generally represent fine sand and muddy sediment. Is., Island; Pt., Point.

Figure 7. Map showing acoustic-backscatter intensity collected within the vicinity of Muskeget Channel, Massachusetts, during a survey conducted in October 2010. Backscatter intensity is an acoustic measure of the hardness and roughness of the sea floor. In general, high values (light tones) represent rock, boulders, cobbles, gravel, and coarse sand. Low values (dark tones) generally represent fine sand and muddy sediment. Is., Island; Pt., Point.

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