“Earthquakes create global-scale GPS errors” – Live Science

CREDIT: Paul Tregoning, Journal of Geophysical Research Source: LiveScience
CREDIT: Paul Tregoning, Journal of Geophysical Research
Source: LiveScience

Becky Oskin covers this report for Live Science.  She writes:

Twelve years of supersized earthquakes have contaminated GPS sites around the world, a new study finds.

The Global Positioning System is a network of satellites and ground stations that provide location information anywhere on Earth.  Except for spots in Australia, western Europe and the eastern tip of Canada, every GPS site on the ground underwent small but important shifts since 2000 because of big earthquakes, according to a study published May 6 in the Journal of Geophysical Research: Solid Earth.

The research confirms that great earthquakes, those bigger than magnitude 8.0, can have far-reaching effects on the Earth’s crust. And because GPS is critical for everything from calculating satellite orbits to sea level rise to earthquake hazards, scientists can’t ignore these tiny zigs and zags, the researchers conclude.

Read the full report, click here.

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