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SPECFEM / specfem2d

SPECFEM2D simulates forward and adjoint seismic wave propagation in two-dimensional acoustic, (an)elastic, poroelastic or coupled acoustic-(an)elastic-poroelastic media, with Convolution PML absorbing conditions.
GNU General Public License v3.0
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velocity unit in the semv file of the simulation result in Specfem2D software #1093

Open Climber2021 opened 3 years ago

Climber2021 commented 3 years ago

Dear seniors, I wish the families of all seniors healthy. I would like to ask what is the velocity unit in the semv file of the simulation result in Specfem2D software? m/s or mm/s?

In the Appendix A section of the SPECFEM2D User Manual
elastic domain: • semd for the displacement vector • semv for the velocity vector • sema for the acceleration vector

                                                                                                                                                      Your sincerely，
                                                                                                                                                      Qiankuan Wang
danielpeter commented 3 years ago

in principle, the default units for velocity would be m/s.

however, the code is agnostic of the units, that is, it depends on whatever units you use for specifying your mesh dimensions and material properties. thus, you could scale everything correspondingly to arrive at mm/s for velocity if you want.