CHANDLER WOBBLE: Why the Earth Wobbles

Planetary Wobbles

Last Updated: Dec 30, 2018

The Chandler Wobble Theory

Chandler Wobbles

Earth spins on its axis of rotation. But it doesn’t spin perfectly. Like a toy top, it wobbles when it spins.

This displacement is known as Chandler wobbles. The Chandler wobble occurs because the Earth is not a perfect sphere.

It flattens out at the poles. The wobble is minuscule. It’s just 20 feet in deviation at the North Pole.

No longer a mystery, the key driver of wobbling is temperature and salinity changes at the bottom of the ocean.

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