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3D perspective views of seafloor bathymetry from multibeam sonar offshore of SC show grooves carved by drifting icebergs. As iceberg keels plow into seafloor, they dig deep grooves that push aside boulders and piles of sand and mud along their tracks
© Jenna Hill / U.S. Geological Survey, Pacific Coastal & Marine Science Center
Icebergs drifting from Canada to Southern Florida
Woods Hole Oceanographic Institution and United States Geological Survey data shows how icebergs drifted more than 5,000km during the last glaciation.