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A GPS Station in the Sierra Nevada
A GPS Station in the Sierra Nevada


A new study led by Western Washington University’s Colin Amos focuses on the solid rock beneath all that sediment to see how it is responding to being relieved of the burden of that huge weight of water.

The study relies on GPS stations around the valley—not sitting on the subsiding valley floor. By being firmly bolted into rock and carefully tracking the GPS satellite signals, these GPS stations can detect minute movements of the Earth’s crust.

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