Massive Japanese quake alters earth's spin, shortens our days

Map of Japan

Map of Japan

Because of the 9.0 earthquake that rocked Japan on March 11, each earth day has become shorter. NASA, the US Space Agency, says that’s because the quake was so strong, it caused the earth to shift and rotate on its own axis 1.6 seconds faster, shortening our days. It also caused parts of Japan to move 13 feet closer to the United States. John Armbruster, a seismologist with the Lamont-Doherty Observatory of Colombia University in New York, explains to Gerry Adams what caused the quake and how it’s affected some things we take for granted.

Duration: 3’36”


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