Thread: AGU 2023: T019. Origins and Implications of Heterogeneities in Dry and Fluid-pressurized Fault Zones Across Scales

Dear Colleagues,


We would like to draw your attention to our session, T019. Origins and Implications of Heterogeneities in Dry and Fluid-pressurized Fault Zones Across Scales, for which you can submit an abstract herehttps://agu.confex.com/agu/fm23/prelim.cgi/Session/187844 by August 2nd.


Our invited speakers are Elizabeth Cochran (US Geological Survey) and Pierre Romanet (Sapienza University of Rome and Géoazur).


The nucleation, propagation and arrest of fault slip are sensitive to geometrical and hydro-mechanical properties of the fault core, damage zone, and host rock. Recent numerical and experimental studies have shown that heterogeneous distribution of fluids, stresses, off-fault damage, roughness, and fault-core mechanical and structural properties (e.g. gouge) can give rise to highly complex slip behavior. Yet today, there is no consensus on how these heterogeneities are created nor on their implications for fault slip dynamics, earthquake sequences, observable fault structure, and seismic hazard.


The goal of this session is to gather these investigations and facilitate a more coherent understanding of the origins of, and the role played by heterogeneities in fault mechanics at all scales. We welcome contributions based on seismological, geodetic and field observations, small and large scale experiments, and numerical and theoretical modeling.


We’re looking forward to your submissions, and please forward this announcement to anyone you think may be interested in the topic.


Best regards,


Mateo Acosta

Camilla Cattania

Federico Ciardo

Enrico Milanese

Federica Paglialunga