Earthquake frequency spectra are determined by fault rupture velocity, slip displacement, and rock friction
Geophysical studies and stochastic fault simulations confirm that earthquake frequency spectra and ground motion are governed by source properties such as rupture velocity, slip distribution, and fault friction.
The claim proposes that earthquake frequency spectra are determined by fault rupture velocity, slip displacement, and rock friction. Multiple retrieved papers explicitly model or analyze these exact dependencies. Specifically, paper [6] links rupture velocity to corner frequency and subfault spectra, paper [7] derives spectral parameters from source characteristics like seismic moment and stress drop, and paper [11] connects frictional properties and slip heterogeneity to source spectra. No papers refute the claim.
Yuan D, Chen X, Wang C, Hu C, Qiu L. Integrated stochastic finite-fault simulation of near-fault ground motions: application to the 2013 M<sub>W</sub> 6.7 Lushan earthquake.. 2026. https://doi.org/10.1038/s41598-026-49499-8
Paper [6] explicitly integrates a rupture-velocity-dependent source model to govern subfault Fourier amplitude spectra and corner frequency.
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Saadalla H, Qaysi S, Abdelnabi A. Source parameters and stress drop variability in northeastern Egypt and their implications for seismic hazard assessment.. 2026. https://doi.org/10.1038/s41598-026-51640-6
Paper [7] links earthquake source parameters, slip, and seismic spectra through classical source models.
Gallovič F, Sgobba S, K ĽV. Physics-based broadband characterization of weak earthquakes.. 2025. https://doi.org/10.1038/s41467-025-66461-w
Paper [11] connects small-scale friction and slip heterogeneity directly to the observed apparent source spectra of earthquakes.
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