[CIG-SHORT] Reg. Relax for Afterslip modeling

[Sylvain Barbot]

Dear Mahesh,

Relax is a modeling tool to make predictions about deformation and
stress evolution assuming specific geometry and rheology. You can also
use it in inverse problems as it provide the forward modeling part.
For this, you will have to understand the role of dynamic friction and
the distinction between velocity-weakening and velocity-strengthening
friction. Off-fault processes may also be important and fully coupled
with friction evolution on faults. There are plenty of references out
there for you to build your intuition about how that works. Papers
from my colleagues and I can show you how to use the code, but for a
general introduction to friction, I recommend Marone (1998,1999) and
Scholz (1998). Nadia Lapusta and I also have a review of friction and
the seismic cycle (Lapusta & Barbot, 2012). I will send this in a
separate email.

Best wishes,
Sylvain






On Wed, Nov 4, 2015 at 5:38 AM, Dr. Mahesh N. Shrivastava
<mahesh.shrivastava at cigiden.cl> wrote:
> Dear Sylvain Barbot,
>
> Myself Mahesh Shrivastava, working in the Chile subduction zone region.
>
> I am working for coseismic (PCAIM software) and postseismic as afterlsip
> (would like Relax) distribution of the Illapel earthquake 2015.
>
> But I have some confusion, please help me.
>
> I used PCAIM to invert the GPS time series to model the coseismic slip
> distribution. Now I would like model Afterlip distribution after one month
> with Relax code.
>
> But in Relaxed I noticed that it takes slip distribution, afterslip planes
> and GPS coordinates. It generates the modeled GPS sites series, relaxed
> displacement and other several files. But I do not understand what is the
> parameters need to use to make best fit with observed GPS time series.
>
> Please explain me.
>
> Thanking you
>
> Regards
>
> Mahesh