FAULTS_R_GEMS

Earthquakes are controlled by the properties of the underlying fault or fault system, along which rupture is occurring. For example,

• the lateral segmentation of faults controls, where earthquake ruptures initiate, propagate, and arrest;
• faults are embedded in permanent damage zones with modified elastic properties, which enhance slip and speed through increased rock compliance;
• faults become more mature over time.
• structural maturity modulates slip, rupture extent, stress drop, and associated ground-motions.

In the FAULTS_R_GEMS (Properties of FAULTS, a key to Realistic Generic Earthquake Modeling and hazard Simulation) project, we collaborate with scientists at Géoazur (Université Côte d'Azur), IFSTTAR Paris, Géosciences in Montpellier, Inria Sophia, LJAD in Nice, IPGP in Paris, IRSN, ENS Paris, the University of Arizona, and the University of Pisa, with the goal to better understand the interactions between seismic faults and earthquakes, and to use these findings to improve seismic hazard simulations and earthquake early warning (EEW) in terms of prior probabilities.