Fluid pressurization, a possible mechanism of fault weakening, exerts a critical control on earthquake rupture in the upper crust. One cause for this control is the presence of high fluid pressures inside the fault zone. However, the precise mechanisms relating high fluid pressures and fault rupture remain unclear. Here, we use 2-D...
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March 2011 (v1)Journal articleUploaded on: December 4, 2022
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2006 (v1)Journal article
Bull. of Engineering Geology and Environnment, v. 65, p. 321-337, 2006. http://dx.doi.org/10.1007/s10064-006-0043-4
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August 16, 2015 (v1)Journal article
The unexpected 2014 and 2015 Ontake (Japan) and Calbuco (Chile) eruptions proved that improving volcanic eruption prediction is still a great challenge. Decreases of seismic velocities of the Piton de la Fournaise volcano inferred from seismic noise correlations have been shown to precede eruptions. However, seismic velocities are strongly...
Uploaded on: December 4, 2022 -
April 2010 (v1)Journal article
Recurring large rock-slope failures of the Argentera–Mercantour massif (southern French Alps) over the past 20,000 years were identified in the field and analyzed using a continuum mechanics approach based on material weakening in a three-dimensional finite-difference model. We compared a mountain-slope failure model neglecting the effect of...
Uploaded on: December 3, 2022 -
March 2011 (v1)Journal article
The interaction between mechanical deformation and fluid flow in fault zones gives rise to a host of coupled hydromechanical processes fundamental to fault instability, induced seismicity, and associated fluid migration. In this paper, we discuss these coupled processes in general and describe three modeling approaches that have been considered...
Uploaded on: December 3, 2022 -
2011 (v1)Journal article
Can CO2 storage cause earthquakes? What is the maximum possible earthquake magnitude resulting from CO2 injection? Here, as a theoretical case study we investigate these questions using coupled hydromechanical modeling with multiphase flow and seismological variables for quantifying earthquake magnitude and energy. Our simulations consider...
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June 26, 2011 (v1)Conference paper
International audience
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2007 (v1)Journal article
Energy Conversion and Management, v. 48, n. 6, p. 1798-1807, 2007. http://dx.doi.org/10.1016/j.enconman.2007.01.021
Uploaded on: December 3, 2022 -
June 26, 2011 (v1)Conference paper
International audience
Uploaded on: December 3, 2022 -
October 2, 2009 (v1)Journal article
In Matsushiro, central Japan, a series of more than 700,000 earthquakes occurred over a 2-year period (1965–1967) associated with a strike-slip faulting sequence. This swarm of earthquakes resulted in ground surface deformations, cracking of the topsoil, and enhanced spring outflows with changes in chemical compositions, as well as carbon...
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December 2013 (v1)Journal article
In this paper, fluid flow is examined for a mature strike-slip fault zone with anisotropic permeability and internal heterogeneity. The hydraulic properties of the fault zone were first characterized in situ by microgeophysical (VP and σc) and rock-quality measurements (Q-value) performed along a 50-m long profile perpendicular to the fault...
Uploaded on: December 2, 2022 -
December 14, 2015 (v1)Conference paperExploring activated faults hydromechanical processes from semi-controled field injection experiments
The appreciation of the sensitivity of fractures and fault zones to fluid-induced-deformations in the subsurface is a key question in predicting the reservoir/caprock system integrity around fluid manipulations with applications to reservoir leakage and induced seismicity. It is also a question of interest in understanding earthquakes source,...
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January 2014 (v1)Journal article
The importance of geomechanics--including the potential for faults to reactivate during large-scale geologic carbon sequestration operations--has recently become more widely recognized. However, notwithstanding the potential for triggering notable (felt) seismic events, the potential for buoyancy-driven CO2 to reach potable groundwater and the...
Uploaded on: December 3, 2022 -
2008 (v1)Journal article
Interactions between pore pressure, strain and seismicity were analyzed in a 30-m-thick shallow fault zone that was subjected to a small overpressure of 80 kPa to produce small changes in effective stress. Simultaneous pressure-strain and seismic measurements taken in the fractured damage zone during the pressurization indicated that seismicity...
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May 25, 2012 (v1)Journal article
The seismic (P-waves velocity, VP) signature of a small fault zone intersecting carbonate reservoir layers with contrasted properties of the southeastern French sedimentary basin was studied from the micro-scale to the fault zone pluri-meter scale architecture. VP measurements were done both at the meter scale, at 250-m depth in a gallery...
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2007 (v1)Journal article
Stress and fluid transfers were analyzed on the surface of a 30 m thick dextral strike-slip fault zone subjected to an overpressure of 63 kPa. Pressure-strain measurements taken during the pressurization indicated a strain state primarily controlled by the hydromechanical behavior of permeable fractures, and then, by the fluid diffusion in the...
Uploaded on: December 4, 2022