Aftershocks in a frictional earthquake model
O.M. Braun, E. Tosatti
TL;DR
This paper presents a minimal physical earthquake model that reproduces key empirical laws by incorporating contact aging and plate elasticity, offering insights into earthquake aftershock dynamics.
Contribution
It introduces a simplified frictional model that simultaneously explains the Gutenberg-Richter and Omori laws through contact aging and elasticity.
Findings
Reproduces Gutenberg-Richter law
Replicates Omori aftershock law
Highlights importance of contact aging and elasticity
Abstract
Inspired by spring-block models, we elaborate a "minimal" physical model of earthquakes which reproduces two main empirical seismological laws, the Gutenberg-Richter law and the Omori aftershock law. Our new point is to demonstrate that the simultaneous incorporation of ageing of contacts in the sliding interface and of elasticity of the sliding plates constitute the minimal ingredients to account for both laws within the same frictional model.
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