EarthScope Looks Under North America
EarthScope is providing high resolution views of the interior structure of the North American continent using seismic tomography.
What is beneath the surface of North America?
earth movement
This is an image of what is going on 200 km beneath the surface of the Earth in the mantle, which is a layer of the Earth made up of very hot rock under enormous pressure. Blue colors mean relatively colder and harder rock, and red colors mean relatively warmer and weaker rock. The western United States is hotter than the surrounding
earth movement
earth movement
question
Question 1:
What is seismic tomography?
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question
Question 2:
Why are there red colors under the Southwestern United States?
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Question 3:
Why are there blue colors under the eastern United States?
Answer
earth movement