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National Seafloor Mapping and Benthic Habitat Studies

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Lake Michigan

Gull Island Reef Perspective Views

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Click on the arrows within the index map below or the thumbnail images to view the perspective views.

Gull Island Index Map Gull Island perspective view 2

Larger View (176 kb)

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.

Gull Island perspective view 1

Larger View (172 kb)

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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URL: http://walrus.wr.usgs.gov/pacmaps/lm-gipersp.html
Page Contact Information: Peter Dartnell
Page Maintained By: Laura Zink Torresan
Page Last Modified: 8 September 2008 (lzt)