[CIG-SEISMO] 1D velocity models in axisem ...

[Dimitri Komatitsch]

Dear Bhaskar illa,

The AxiSEM group (Tarje and his colleagues) can of course answer more 
precisely, but there is a version of AxiSEM for 3D models, if your 3D 
model is smooth enough: 
https://academic.oup.com/gji/article/207/3/1700/2333879 and 
https://github.com/kuangdai/AxiSEM3D

Yes, as any SEM code, AxiSEM computes the full wavefield, thus yes it 
will include Pn and Sn, if your Moho structure is meshed accurately 
enough of course.

If your 3D model is not smooth enough and you cannot use a 
pseudospectral expansion, then you need to turn to full SEM such as in 
http://komatitsch.free.fr/preprints/GJI_Bozdag_GLAD_2016.pdf or 
http://komatitsch.free.fr/preprints/science_ritsema.pdf 
(SPECFEM3D_GLOBE), but that is more expensive to run of course.

Best wishes,
Dimitri.

On 11/19/18 6:16 AM, bhaskar illa wrote:
> Good morning,
> 
> Myself bhaskar illa,research scholar,seismology group.Axisem is more user
> friendly and quickly generating green function database and one more thing
> is that we can run personal pc,so really  thanks a lot to axisem 
> team(sample plots attached here).
> 
> I have two queries:
> 1.There is no any problem with using 1D velocity models in Axisem(because
> here we are generating 3D wave field data) ?
> 
> 2.Axisem suitable for refracted phases like Pn and Sn (Moho refracted
> phases)
> 
> Please reply to above those questions and its very helpful for my PhD  work
> 
> Thank you to all,
> 
> Bhaskar illa,
> Research Scholar,
> Seismology group,
> CSIR-NGRI.
> 
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-- 
Dimitri Komatitsch, CNRS Research Director (DR CNRS)
Laboratory of Mechanics and Acoustics, Marseille, France
http://komatitsch.free.fr