Séminaire ISTerre

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Emergence of complexity from simple physics: how physics-based modeling highlights key features of earthquake processes

mardi 8 octobre 2019 - 10h30

Lucile Bruhat - Ecole Normale Supérieure (ENS) Paris
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While substantial progress has been made in understanding how and where strain accumulates on faults, enabling the identification of fault segments that are more likely to host earthquakes, the mechanical behavior of some key features of the earthquake rupture remains unclear. For instance, difficulties arise when we aim at defining the deep locked-to-creeping transition, and at estimating slip deficit in such transitional regions. Since earthquakes result from the sudden release of elastic strain along a fault interface, reasonable estimates for slip deficit, and consequent strain accumulation, are critical for earthquake hazard assessment. In this work I will present various examples of how “simple” physics-based models can help us understanding key features of earthquake physics.

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Equipe organisatrice : Cycle sismique et déformations transitoires

Amphithéâtre Killian, Maison des Géosciences, 38400 Saint Martin d'Hères