How can satellites and GPS be used today to track the movement of plates?


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GPS Geodesy, the science of measuring the Earth's shape and positions on it, lets us measure plate motions directly using GPS, the Global Positioning System. This network of satellites is more stable than the Earth's surface, so when a whole continent moves somewhere at a few centimeters per year, GPS can tell. The longer we do this, the better the accuracy, and in much of the world the numbers are quite precise by now.

Answered by Bonnie R. -

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