Iceberg scour marks reveal ancient wind patterns from the Laurentide Ice Sheet
By
Katherine Kornei
Summary
Researchers studied scour marks left by icebergs from the ancient Laurentide Ice Sheet that ran aground thousands of years ago in what is now western New York. By analyzing the orientation and patterns of these iceberg scours (visible in lidar imagery), they were able to infer the prevailing wind patterns that existed during the Ice Age. The study demonstrates how geological features can serve as proxies for reconstructing ancient atmospheric circulation patterns linked to massive ice sheets.
Source
bskyIceberg scour marks reveal ancient wind patterns from the Laurentide Ice Sheeteos.orgKey quotes
· 3 pulledIceberg scours show up as trenches in this lidar image taken of a landscape in western New York.
Researchers have now studied the tracks left by some of those icebergs to infer the wind patterns set in motion by the Laurentide Ice Sheet.
Scour marks left by icebergs that ran aground thousands of years ago record the winds blowing off the Laurentide Ice Sheet.
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