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    How a Seismic Wave Sees the Southern California Crust  


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Carl Tape
Graduate Student

S denotes the earthquake location, and R denotes the seismometer location, 157 km away. Inset seismogram shows the ground motion that is expected at the seismometer, with the shaded area corresponding to the arrival of the P wave, which "sees" the region shown at left. The larger, later arrival is the surface wave, which "sees" a different part of the southern California crust.


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