Before Superstorm Sandy struck New Jersey and New York, the storm made a turn to the northwest toward land, rattling the ocean floor and setting off seismometers across the U.S., according to University of Utah researchers.
Sandy was not the only storm to do this, the researchers say. Keith Koper, director of the University of Utah Seismograph Stations, says "microseisms," or relatively small seismic waves, were detected before and after Sandy from North Pacific and North Atlantic storms that never hit land.
And Hurricane Katrina in 2005, Koper adds, "was recorded by a seismic array in California, and they could track the path of the storm remotely using seismometers."
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