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September 1, 2009, 3:03 pm
New Way to Beat Rip Currents: Tread Water
By John TierneyDr. MacMahan, an oceanography professor at the Naval Postgraduate School in Monterey, Calif., found that the conventional image of a rip current is inaccurate — that it’s actually not a long plume of fast-moving water running out to sea. Instead, rip currents more closely resemble whirlpools, with strong, persistent eddies that circulate throughout the surf zone, Dr. MacMahan reports in an article to be published in Marine Geology