Auxiliary Material Submission for Paper XXXXXXXX

Coupled multiphase flow and poromechanics: a computational model of pore-pressure effects on fault slip and earthquake triggering

B. Jha (1) and R. Juanes (1)

1: Department of Civil and Environmental Engineering,
   Massachusetts Institute of Technology,
   Cambridge, MA, USA


Jha B. and R. Juanes (2013), Coupled multiphase flow and poromechanics: a computational model of pore-pressure effects on fault slip and earthquake triggering,
Water Resour. Res., XXX, XXXXX, doi:XXXXXX.

Introduction

The auxiliary material consists of two videos.

The two videos show the fault slip and slip velocity from a numerical simulation described in the manuscript under Section 6.4. Faulting due to CO2 injection: 3D.

In the first video, we show up-dip slip on the fault surface as a function of time.

In the second video, we show up-dip slip velocity on the fault surface as a function of time.

The videos play back 500 days of simulation time in about 7 seconds. The speedup factor of the videos (ratio of playback time to simulation time) changes three times as the time step in the simulation changes three times. 
The simulation time step is 10 day for simulation up to 140 days, then it changes to 1 day for simulation up to 180 days, then it is 2 day for simulation up to 210 days, and finally the time step is 5 day till the finish. The time step is large during the pre-failure and post-failure stages when the fault is locked, and it is small when the fault is slipping. See Section 7. Conclusions.

1. slip_updip.avi: Video showing the slip on the fault
2. sliprate_updip.avi: Video showing the slip rate or slip velocity on the fault