[aspect-devel] Using seismic tomography as an input

[John Naliboff]

Hi Phil,

There are currently postprocessors available for computing the geoid and 
heat flux. Additional postprocessors for gravity are in the works.

Working examples - yes, please have your colleague send an email when 
they have a concrete idea of what they would like to do. If they simply 
want to map velocity variations into temperature anomalies that are used 
as an initial condition, this should be fairly straightforward.

Cheers,
John

*************************************************
John Naliboff
Assistant Project Scientist, CIG
Earth & Planetary Sciences Dept., UC Davis

On 10/20/2017 01:37 AM, HERON, PHILIP J. wrote:
>
> Hi Paul and John,
>
>
> Thanks for the replies!
>
>
> "are you hoping to input seismic tomography models for the express 
> purpose of obtaining a density and gravity model?"
>
>
> Yes, this is what he is looking to do. Heat flux would be a bonus, too.
>
>
> I've passed on the information and he is going to download Aspect this 
> afternoon. I think this would be really neat if we can get a working 
> example up and running from this. I'll keep you posted and I (or more 
> than likely he) will drop back in with some questions.
>
>
> Thanks again,
>
>
> Phil
>
> ------------------------------------------------------------------------
> *From:* Aspect-devel <aspect-devel-bounces at geodynamics.org> on behalf 
> of Bremner,Paul M <pbremner at ufl.edu>
> *Sent:* 19 October 2017 22:04:30
> *To:* aspect-devel at geodynamics.org
> *Subject:* Re: [aspect-devel] Using seismic tomography as an input
>
> Hi Phil,
>
>
> I believe a 3D Cartesian model can be input into the ascii plug-in.
>
>
> I also just want to make sure I understand your purpose correctly, are 
> you hoping to input seismic tomography models for the express purpose 
> of obtaining a density and gravity model? Or are you wanting to simply 
> use the tomography models to feed a density model to ASPECT?
>
>
> I believe that both the S40RTS and ascii plug-ins assign the 
> temperature field in ASPECT, and not the density. For example, in 
> S40RTS the velocity perturbation at a particular point is converted to 
> density perturbation by multiplying a constant scale factor. That 
> value is then multiplied by 1/alpha to get temperature perturbation, 
> which is added to a background temperature for that point.
>
>
> Cheers,
> Paul
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