[CIG-SEISMO] Interpolate model from one mesh onto another

[Peter Danecek]

Hi Alan,

I would argue, that the problem you are describing is not specific to  
SPECFEM3D, but more general: To make a really correct (interpolation)  
-- I would call it projection -- you would need to take into account  
the right discrete representation in each case and map it into the  
other one using the underlaying basis functions. This would be true  
not only for the case from coarse to fine, but also in the oposite  
direction. For this operation I am not aware of any generic tool,  
which currently would do exactly this.

 From a more practical point of view, in SPECFEM there is the tomo  
model routine, which performs a linear interpolation from a coarser  
regular grid (defining your model) to the computational grid (here you  
could sample on any other target grid as well). This, in some way,  
could serve your needs?

Hope this note is any useful to you!
~petr


On 28 Jun 2013, at 14:52, schiemenz at geophysik.uni-muenchen.de wrote:

> Dear SPECFEM3D* community,
> I would like to know if there is an effective way for the user to
> interpolate from one mesh onto another.  More specifically, I am  
> updating
> a (coarse) Vp model with FWI at low frequencies, but need to use a  
> finer
> model for higher frequencies.  Therefore my model files (e.g.
> proc*_vp.bin) are indexed differently.  Is such a feature already in  
> the
> software?
>
> Regards,
> Alan Schiemenz
>
> _______________________________________________
> CIG-SEISMO mailing list
> CIG-SEISMO at geodynamics.org
> http://geodynamics.org/cgi-bin/mailman/listinfo/cig-seismo

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