[CIG-SHORT] Single event dynamic earthquake rupture modeling in PyLith

[Mamun Miah]

Thanks, Brad. That's all I needed to understand the details.

On Thu, May 26, 2016 at 8:21 AM, Brad Aagaard <baagaard at usgs.gov> wrote:

> Mamum,
>
> The traction perturbation to nucleate rupture is described in the SCEC
> benchmark description. These are posted at
> http://scecdata.usc.edu/cvws/benchmark_descriptions.html with the details
> for TPV102 at
> http://scecdata.usc.edu/cvws/download/SCEC_validation_ageing_law.pdf.
>
> The traction perturbations for nucleation in these benchmarks are mostly
> ad hoc in terms of their spatial and temporal evolution. Some of the first
> ones used square distributions with discontinuities. Obviously, this can
> cause ambiguity and numerical issues in implementing them. TPV102 uses a
> smoother distribution as do most of the later ones.
>
> Regards,
> Brad
>
>
> On 05/25/2016 04:29 PM, Mamun Miah wrote:
>
>> Dear Brad,
>>
>> I have been able to simulate dynamic rupture of a fault from fluid
>> injection after following your links. I am using TOUGH2 for fluid
>> simulation. However, I have a question in regard to the computation of
>> spatial and temporal variation of tractions on the fault surface. In the
>> Python script 'create_traction.py', you used a function F =
>> mask*numpy.exp(r**2/(r**2-R**2)) and G =
>> mask1*numpy.exp((t-T)**2/(t*(t-2*T))) + mask2*1.0. I am a bit unclear
>> about how the combination of these two functions is replicating the
>> stress transfer in the form of wave propagation to simulate dynamic
>> rupture on the fault. I would highly appreciate if you kindly elaborate
>> on this.
>>
>> Thanks,
>> Mamun
>>
>> On Wed, Nov 4, 2015 at 11:42 AM, Brad Aagaard <baagaard at usgs.gov
>> <mailto:baagaard at usgs.gov>> wrote:
>>
>>     The SCEC Dynamic Rupture Benchmark TPV102 is such an example. The
>>     problem description is posted at
>>     http://scecdata.usc.edu/cvws/cgi-bin/cvws.cgi
>>
>>     The PyLith input files (no mesh) are in the GitHug repo
>>     https://github.com/geodynamics/pylith_benchmarks
>>     in dynamic/scecdynrup/tpv102.
>>
>>     Note that this examples requires CUBIT and a computer cluster to
>>     run. I am not sure the input files have been completely updated to
>>     v2.1.0.
>>
>>     Regards,
>>     Brad
>>
>>
>>
>>     On 11/4/15 11:36 AM, Mamun Miah wrote:
>>
>>         Hello Developers, I hope I am not too much trouble.  I really
>>         appreciate
>>         all the support that you guys are giving me.
>>
>>         I would like to model the dynamic rupture of a single event in
>>         PyLith
>>         governed by rate- and state-dependent friction law. Is there any
>>         tutorial on a single dynamic rupture? I can't seem to find it in
>> the
>>         manual. Thanks!
>>
>>         Mamun
>>         --
>>         Thanks & Best Regards,
>>         Mamun Miah
>>         Graduate Research Assistant
>>         Department of Civil Engineering
>>         The University of Mississippi
>>         Oxford, MS 38655
>>         Phone: (662)-801-1904 <tel:%28662%29-801-1904>
>>         Website: http://www.linkedin.com/pub/mamun-miah-eit/21/53/339
>>
>>
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>>
>>
>> --
>> Thanks & Best Regards,
>> Mamun Miah
>> Graduate Research Assistant
>> Department of Civil Engineering
>> The University of Mississippi
>> Oxford, MS 38655
>> Phone: (662)-801-1904
>> Website: http://www.linkedin.com/pub/mamun-miah-eit/21/53/339
>>
>>
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-- 
Thanks & Best Regards,

Mamun Miah
Graduate Research Assistant
Department of Civil Engineering
The University of Mississippi
Oxford, MS 38655
Phone: (662)-801-1904
Website: http://www.linkedin.com/pub/mamun-miah-eit/21/53/339
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