[CIG-SEISMO] specfem2d velocity gradient implementation

[Dimitri Komatitsch]

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