Publications de Carolina Giorgetti

Off-fault deformation feedback and strain localization precursor during laboratory earthquakes

Marie Estelle Solange Violay, Gabriel Gérard Dominique Meyer, Simon Guérin-Marthe, Carolina Giorgetti

Recent large-scale seismological observations have shown that off-fault strain localization and foreshock migration could serve as an early warning of an impending earthquake. However, this process is still largely unknown. In this study, state-of-the-art ...

Springer Science and Business Media LLC2024

The influence of roughness on experimental fault mechanical behaviour and associated microseismicity

Brice Tanguy Alphonse Lecampion, Marie Estelle Solange Violay, Seyyedmaalek Momeni, François Xavier Thibault Passelègue, Carolina Giorgetti, Barnaby Padraig Fryer

Fault surfaces are rough at all scales, this significantly affecting fault-slip behaviour. However, roughness is only occasionally considered experimentally and then often in experiments imposing a low slip velocity, corresponding to the initiation stage o ...

2022

The Influence of Loading Path on Fault Reactivation:a Laboratory Perspective

Marie Estelle Solange Violay, Carolina Giorgetti

The loading path the fault experiences is often neglected when evaluating its potential for reactivation and the related seismic risk. However, stress history affects fault zone compaction and dilation, and thus its mechanics. Therefore, in incohesive faul ...

2021

HighSTEPS: A High Strain Temperature Pressure and Speed Apparatus to Study Earthquake Mechanics

Marie Estelle Solange Violay, Laurent Gastaldo, Carolina Giorgetti, Chiara Cornelio

2021

Bifurcations at the Stability Transition of Earthquake Faulting

Carolina Giorgetti

Tectonic faults typically break in a single rupture mode within the range of styles from slow slip to dynamic earthquake failure. However, in increasingly well-documented instances, the same fault segment fails in both slow and fast modes within a short pe ...

AMER GEOPHYSICAL UNION2020

Petrophysical properties of heavy oil-bearing carbonate rocks and their implications on petroleum system evolution: Insights from the Majella Massif

Carolina Giorgetti

In this work, we investigate the role of hydrocarbons in changing the petrophysical properties of rocks by merging laboratory measurements, outcrops characterization, and subsurface data focusing on a carbonate-bearing reservoir (Bolognano Formation) of th ...

2020

Experimental Insights Into Fault Reactivation in Gouge-Filled Fault Zones

Carolina Giorgetti, Francesco Tesei

Faults in the brittle crust constitute preexisting weakness zones that can be reactivated depending on their friction, orientation within the local stress field, and stress field magnitude. Analytical approaches to evaluate the potential for fault reactiva ...

AMER GEOPHYSICAL UNION2019

Contrasting mechanical and hydraulic properties of wet and dry fault zones in a proposed shale-hosted nuclear waste repository

Marie Estelle Solange Violay, Carolina Giorgetti, Luis Felipe Orellana Espinoza

2019

Fault reactivation during fluid pressure oscillations: transition from stable to unstable slip

Marie Estelle Solange Violay, François Xavier Thibault Passelègue, Carolina Giorgetti, Corentin Jean-Marie Rémi Noël

High‐pressure fluid injection in deep geo‐reservoirs can induce earthquakes. Recent observations suggest that cyclic injections might trigger less seismicity than monotonic injections. Here, we report triaxial laboratory experiments conducted on faulted qu ...

2019