[aspect-devel] Using seismic tomography as an input

John Naliboff jbnaliboff at ucdavis.edu
Thu Oct 19 12:53:26 PDT 2017

Hi Phil,

It certainly is possible. The plugin for S40RTS maps seismic velocity 
variations to temperature, which are provided as the initial condition. 
While it make sense to map S40RTS into a spherical coordinate system, it 
is straightforward to map a seismic velocity model in cartesian 
coordinates. One simply needs to specify how the geographic coordinates 
map to a cartesian grid.

One can also read in the initial temperature field through the ascii 
input option (e.g., velocity->temperature are done externally). The user 
simply has to take into account the formatting requirements for each 
coordinate system (specified in the documentation) when reading in the 
ascii data. One can also specify the initial compositional field 
structure via ascii text files. I've used this method for reading in 
CRUST1.0 in various coordinate systems. So, lots of options!

If one of your colleagues has specific questions or needs to help 
getting started, please have them contact us!


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

On 10/19/2017 12:37 PM, HERON, PHILIP J. wrote:
> Hi all,
> I've had a number of people asking me about using ASPECT with 
> available seismic tomography data - to input seismic data and obtain 
> density and possibly gravity models. I know this is possible for 
> global spherical models (as shown the S20RTS), but is it possible for 
> a 3D cartesian seismic input? Or would this require working on a plug in?
> Cheers,
> Phil
> _______________________________________________
> Aspect-devel mailing list
> Aspect-devel at geodynamics.org
> http://lists.geodynamics.org/cgi-bin/mailman/listinfo/aspect-devel

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