Which process causes seismic amplification when shear waves encounter a sedimentary basin bounded by a fault?

💡 Explanation

When shear waves enter a sedimentary basin with faults on the boundaries, constructive interference occurs because the impedance contrast leads to wave reflections that superimpose constructively, amplifying ground motion. Therefore constructive interference results, rather than increased velocity, ground motion reduction, or refraction which depend on different impedance or topography.

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