[CIG-SEISMO] specfem2d velocity gradient implementation
Dimitri Komatitsch
komatitsch at lma.cnrs-mrs.fr
Sun Oct 22 08:47:30 PDT 2017
Hi,
You need to use the "define_external_model()" subroutine.
Best regards,
Dimitri.
On 10/22/2017 05:35 PM, seisphd wrote:
> Dear developers and users
>
> Downloading and starting using specfem2D I appreciated the fact that its
> free software and was amazed by its potentials.
>
> I have a question though, which I can not solve through the manual.
>
> Using an "internal velocity model" format;
> ( like
> "simple_topography_and_also_a_simple_fluid_layer/interfaces_simple_topo_curved.dat").
> Which parameters needs to be modified into the *Par_file* to introduce
> a *vertical velocity gradient*?
>
> So for example the nodes of the first layer instead being all
> 3000.d0
> will start 2900 at the top and increase gradually with depth to end
> with 3100 at the bottom.
>
> Thank you in advance for your help and time
>
>
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>
--
Dimitri Komatitsch, CNRS Research Director (DR CNRS)
Laboratory of Mechanics and Acoustics, Marseille, France
http://komatitsch.free.fr
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