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← GeographyWhich seismic consequence arises when a fault's roughness increases?
A)Elevated earthquake magnitude occurrence✓
B)Reduced subduction zone earthquake rate
C)Decreased induced seismicity duration
D)Uniform frequency-magnitude spatial location
💡 Explanation
An undulating fault plane increases stress accumulation which causes larger, less frequent earthquakes because asperities hinder fault slip, initiating stick-slip behavior. Therefore, earthquake magnitude increases, rather than decreases in seismic activity, which would occur with smoother fault surfaces.
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