The Role of porosity evolution and fluid flow in frictional instabilities: A parametric study using a spring-slider dynamic system

Details The Role of porosity evolution and fluid flow in frictional instabilities: A parametric study using a spring-slider dynamic system The Role of porosity evolution and fluid flow in frictional instabilities: A parametric study using a spring-slider dynamic system

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3723305m&link_type=abstract

Geophysical Research Letters, Volume 37, Issue 23, CiteID L23305

Other

2

Structural Geology: Rheology And Friction Of Fault Zones (8163), Physical Properties Of Rocks: Permeability And Porosity, Biogeosciences: Hydrothermal Systems (1034, 3017, 3616, 4832, 8135, 8424), Geodesy And Gravity: Seismic Cycle Related Deformations (6924, 7209, 7223, 7230), Seismology: Earthquake Dynamics (1242)

Scientific paper

We have investigated the role of porosity evolution and fluid flow in frictional instabilities by analyzing the response of a single degree of freedom dynamic system. The spring slider is governed by rate- and state-dependent constitutive law. We also account for effective normal stress changes caused by thermal pressurization with constant or variable porosity. Our simulations show that the stress drop during dynamic instabilities depends on constitutive parameters, porosity evolution, fluid flow as well as on the effective fault zone thickness, defined in this study as the ratio between the nominal thickness of the fault zone (w) and the hydraulically activated layer (why). Both porosity evolution and fluid flow can avoid the extremely large stress drop values inferred by thermal pressurization models and provide an attempt to reconcile them with seismological observations.

Affiliated with

Also associated with

No associations

Rating

The Role of porosity evolution and fluid flow in frictional instabilities: A parametric study using a spring-slider dynamic system does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Role of porosity evolution and fluid flow in frictional instabilities: A parametric study using a spring-slider dynamic system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Role of porosity evolution and fluid flow in frictional instabilities: A parametric study using a spring-slider dynamic system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1291884