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Seafloor Mapping

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Lake Michigan

Gull Island Perspective View

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Perspective view of colored shaded-relief multibeam bathymetry of Lake Michigan; see caption below.

Oblique view of Gull Island Reef looking north. The arcuate pattern of the reef (A) is replicated in a step-like fashion into deep water (D). The ridge crest (A) is composed of boulders and cobbles as seen in video data (Guy Fleischer, NOAA, Seattle, Washington, personal commun., 2002). The vertical exaggeration is 4x and the distance across the bottom of the image is about 2.0 km.

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