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Seafloor Mapping

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Lake Michigan

Gull Island Reef Perspective View

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

Oblique view looking southwest toward Gull Island Reef. The front of the arcuate ridge (A) and radiating parallel ridges (B) of gravel and boulders are emphasized in this view. Also seen is the sand sheet draping the rough substrate (C). The vertical exaggeration is 4x and the distance across the bottom of the image is about 2.5 km.

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