The Impact of Irrigation on Earth's Rotation
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Questions and Answers

Which of the following is the second largest contributor to polar drift, after the rebound of Earth's surface following the retreat of glaciers since the last ice age?

  • Seasonal weather patterns
  • The Chandler wobble
  • Irrigation (correct)
  • Long-term variations in temperature and salinity of ocean water
  • What is the estimated distance that the North Pole has been nudged by irrigation from 1993 through 2010?

  • 78 millimeters
  • 78 meters
  • 78 centimeters (correct)
  • 78 kilometers
  • What causes part of the cyclical drift of the North Pole across the Arctic seascape?

  • The Chandler wobble
  • Long-term variations in temperature and salinity of ocean water
  • Irrigation
  • Seasonal weather patterns (correct)
  • What is the 14-month-long oscillation that helps drive the movement of the North Pole?

    <p>Chandler wobble</p> Signup and view all the answers

    According to Clark Wilson, a geophysicist at the University of Texas at Austin, what else moves the North Pole around, aside from the cyclical drift and oscillations?

    <p>Subtler factors</p> Signup and view all the answers

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