[CIG-SEISMO] Specfem2D : Small Oscillations in Kernel Data

[Philip Knaute]

Dear All

After getting Specfem2D to run with Scotch (thank you again for your help,
Dimitri) I started to work with the sensitivity-kernel function of
Specfem2D.

But, when I look at my results (e.g. the Kernels) their values seem to
oscillate (very small deviations) around an average value.

So, if I have a 2D plot of my sensitivity Kernel, I would take a 1D slice
for a fixed z value.
Looking at that 1D funtcion only depending on the GLL Points in X Direction
it would look like a Triangle wave function ( looking something like that
/\/\/\/\/\ ).
It would oscillate very regularly around an average value, especially at
locations where this average value doesn't change.
The oscillations seem to be too regular to be noise or an instability of any
kind, so I guess it is an intentional feature.
Is it an intentional feature of the code and do I have to post process the
Kernel-data somehow?

Thank you very much for your help.
Best regards,
Philip
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