[CIG-SHORT] slip orientation for a nonplanar fault surface

[Brad Aagaard]

Jiangzhi,

What time scale are you modeling? PyLith should be appropriate if the 
problem can be solved with infinitesimal or small strains. Additionally, 
the fault formulation in PyLith breaks down when the offset become large 
enough so that the slip vector would need to be changing. We expect that 
a finite-strain formulation would be needed as well for those types of 
problems.

Regards,
Brad

On 10/20/2014 03:24 PM, Jiangzhi Chen wrote:
> Thanks for the quick response. The region is part of the Cascadia
> subduction zone, where the Juan de Fuca plate moves northeastward and
> subducts. The aim is to understand how the subduction influences the
> surface displacement field, and explains the geodetic observation. The
> upper slab interface is supposed to be a dynamic fault surface, and the
> lower interface is a kinematic surface. For now, I am using two
> kinematic surface just to make the slab go under.
>
> Jiangzhi
>
> On 10/20/2014 03:08 PM, Brad Aagaard wrote:
>> Jiangzhi,
>>
>> I don't understand what you are trying to do. What research question
>> are you trying to answer? What do you want to learn from the simulation?
>> What are your observations/constraints?
>>
>> Regards,
>> Brad
>>
>>
>>
>> On 10/20/2014 03:02 PM, Jiangzhi Chen wrote:
>>> Hi everyone,
>>>
>>>      I am working on a subduction simulation, where the fault interface
>>> is nonplanar, and the subduction slab moves in northeast direction at 4
>>> cm/year before it meets the overriding plate. My question is how I can
>>> specify the kinematic fault interface. It is not appropriate to use
>>> predefined slip functions, because the slip rates depend on the location
>>> which is changing with time. Is there a way to make this work? Any help
>>> is appreciated.
>>>
>>> cheers,
>>> Jiangzhi
>>>
>>>
>>>
>>>
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>>
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