- March 19th, 2011
- Jackson Parker
GPS Shows Earthquake Shortened Day Lengths for the World
he recent 8.9 magnitude earthquake in Japan will not only leave an everlasting impression on the country, but globally as a result of the quake’s effect on the rotation of the Earth and GPS coordinates, according to Richard Gross, a geophysicist at NASA’s Jet Propulsion Laboratory. The intense earthquake that struck Japan on March 11, 2011, has accelerated Earth’s spin – which has has shortened the length of Earth’s day by a fraction and shifted how the planet’s mass is distributed.
The earthquake shortened of the length of the 24-hour day by 1.8 microseconds. Aftershocks in Japan could continue to result in further changes to GPS coordinates, the length of day, and the shifting of the Earth’s axis.