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Monitoring the multibeam sonar on Oden.

Monitoring the multibeam sonar on Oden.
Monitoring the multibeam sonar on Oden.
Monitoring the multibeam sonar on Oden.
Monitoring the multibeam sonar on Oden.
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75395
Linder, Christopher
Monitoring the multibeam sonar on Oden.
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08/13/2007
graphics/agave2/cl_20070808_agave07_multibeam_007.jpg
Scientists and crew aboard Oden used a newly installed multibeam sonar system on the ship's hull. The multibeam directs 191 beams of sound that fan out from both sides of the ship, covering a seafloor area of 10 to 20 kilometers (6.2 to 12.4 miles) wide, depending on the water depth. The sound signals reflect off the seafloor and back to a receiver on the hull. The higher the seafloor, the sooner the signals will return. In this way, Bjorn Ericksson of Stockholm University (right) and Christian Smith from Kongsberg Maritime, the company that manufactured the multibeam-discovered a previously unknown chain of three volcanoes. "To recognize the outstanding contribution of the crew, we have decided to name the new volcanic chain the Asgard Volcanic Chain," Reves-Sohn said. "Asgard is the home of the Norse gods. We have named three volcanoes in the chain Oden, Thor, and Loke-three of the most important gods in the Norse pantheon."
Photo by Chris Linder
© Woods Hole Oceanographic Institution
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