Some comfuse about SH modelling

daniel-koehn / DENISE-Black-Edition

2D time-domain isotropic (visco)elastic FD modeling and full waveform inversion (FWI) code for P/SV-waves

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Some comfuse about SH modelling #47

Closed lltfj1314sss closed 9 months ago

lltfj1314sss commented 9 months ago

Hi Dr Kiehn,

When we modelling the SH wave in Denise-black-edition. How do we set the SH source in the source file？Should I select QUELLTYP=2? Look like we get the same modelling results using SH and PSV when we set QUELLTYP=2?

Thanks

daniel-koehn commented 9 months ago

Hi Li,

For SH modelling in DENISE Black-Edition, you have to set PHYSICS = 5 in the DENISE parameter file and QUELLTYP = 1 in the source file. In case of SH-FWI you also have to set QUELLTYPB = 1 in the DENISE parameter file.

Best regards,

Daniel

lltfj1314sss commented 9 months ago

Thank you for your rapid response. Set QUELLTYPB = 1 works. New question is the SH modellling seems like only output Y-direction data? How can we output the data of the same direction of source (SH direction)?

Best Li

daniel-koehn commented 9 months ago

Hi Li,

While the SH-data is denoted as "y-component" it is actually the data parallel to the SH-source excitation (z-component).

Best regards,

Daniel

lltfj1314sss commented 9 months ago

Hi Dr Koehn,

Got you, really appreciate it!!

Best regards