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Article Dans Une Revue Science Advances Année : 2017

Induced seismicity provides insight into why earthquake ruptures stop

Résumé

Injection-induced earthquakes pose a serious seismic hazard but also offer an opportunity to gain insight into earthquake physics. Currently used models relating the maximum magnitude of injection-induced earthquakes to injection parameters do not incorporate rupture physics. We develop theoretical estimates, validated by simulations, of the size of ruptures induced by localized pore-pressure perturbations and propagating on prestressed faults. Our model accounts for ruptures growing beyond the perturbed area and distinguishes self-arrested from runaway ruptures. We develop a theoretical scaling relation between the largest magnitude of self-arrested earthquakes and the injected volume and find it consistent with observed maximum magnitudes of injection-induced earthquakes over a broad range of injected volumes, suggesting that, although runaway ruptures are possible, most injection-induced events so far have been self-arrested ruptures.
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hal-01737083 , version 1 (08-01-2021)

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Paternité - Pas d'utilisation commerciale

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Martin Galis, Jean Paul Ampuero, P. Martin Mai, Frédéric Cappa. Induced seismicity provides insight into why earthquake ruptures stop. Science Advances , 2017, 3 (12), ⟨10.1126/sciadv.aap7528⟩. ⟨hal-01737083⟩
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