Which process generates seismic waves characterized by high frequency and rapid attenuation during shallow crustal earthquakes?

💡 Explanation

When shallow earthquakes occur, rupture propagates along fault asperities because variations in frictional resistance lead to stick-slip behavior and high stress concentrations which radiate high-frequency waves that attenuate quickly. Therefore, rupture propagation causes attenuation, rather than thermal gradients, fracturing, or isostatic rebound, which induce different types of seismic responses.

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