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

[Jiangzhi Chen]

The time scale is several hundreds of years, about one earthquake cycle.

On 10/20/2014 03:34 PM, Brad Aagaard wrote:
> 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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