Three seismograms for a single earthquake with an epicenter in Columbia are shown below. The data are from stations that were at very different distances from the epicenter. Arrows denote arrival of P and S waves. Note: Vertical scales are not all the same.
Suppose two earthquakes with the same magnitude, depth, and relative motion occur in two cities, A and B. City A is near a plate boundary, city B is far from a plate boundary. Which earthquake would cause the most shaking farthest from the epicenter?
A. The one in city A because there are few nearby faults
B. The one in city B because there are many nearby faults
C. The one in city A because there are many nearby faults
D. The one in city B because there are few nearby faults
Answer: D
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