NASA scientists have computed how Earth’s rotation should have changed as a result of the 8.8 magnitude earthquake in Chile on February 27.

Preliminary calculations by JPL reasearch scientist Richard Gross show that the length of an Earth day has been shortened by about 1.26 microseconds. Furthermore the quake should have moved Earth’s figure axis by 2.7 milliarcseconds (about 8 centimeters).

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Chilean quake may have shortened Earth days