Beresnev (2019) advocates the use of an earthquake slip function that produces an ω2.5 high‐frequency fall‐off of Fourier displacement spectra in the far field, in which ω denotes the angular frequency. He argues that the observed high‐frequency decay of earthquake spectra can be adequately modeled by this ω2.5 fall‐off, without needing to include high‐frequency attenuation at shallow depth under the site, commonly characterized as fmax or kappa. In his abstract, Beresnev (2019, p. 822) describes source models with fall‐offs intermediate between ω2 and ω3 as “providing natural high‐cut filtering exclusively...

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