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U.S. and Canadian Scientists Map Georges Bank Geology and Habitats
Page Valentine (USGS, Woods Hole, MA) and Steve Fromm (National Marine Fisheries Service, Sandy Hook, NJ) participated in a cruise of the Canadian research vessel CCGS Hudson in June 2002 to Georges Bank in the Gulf of Maine, off the coast of Nova Scotia. They are collaborating with Geological Survey of Canada (GSC) colleagues Brian Todd and Vladimir Kostylev, who have similar research interests. They are mapping the seabed geology and biological habitats of areas that have been imaged during recent multibeam surveys carried out by the GSC. The cruise was spent ground-truthing the multibeam survey of the Canadian part of Georges Bank, where the seabed is similar in most respects to the unmapped U.S. part. Ground-truthing methods included video and photo transects and bottom sampling, methods also employed by the USGS and the National Marine Fisheries Service in their work in the Gulf of Maine. Geophysical surveys (sidescan sonar and subbottom profiling) were conducted in selected areas to aid in the interpretation of glacial features observed in the multibeam images. In addition, Valentine, Todd, and Kostylev are collaborating in the development of a habitat-classification system for the Gulf of Maine. This cruise was the first opportunity to test it in the field.
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in this issue:
Mapping Georges Bank
Parasites as Indicators of Coastal-Ecosystem Health Climate-Change Effects Lecture usSEABED - Seabed Characteristics von Huene Receives Prestigious Award  |
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U. S. Department of the Interior | U.S. Geological Survey
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