You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
I wish the families of all seniors healthy. SPECFEM2D is a very meaningful software and I have been installing, running, and learning it for over a year now. Since I am a graduate student in civil engineering, I still have some questions that I don't understand after all this time. I would be appreciated your guidance.
Question 1: In the external source file, when using the option time_function_type = 8, the external input source is a file containing time and amplitude, does amplitude here refer to displacement (unit: m)? However, the options of source_type are only force (unit: N) and moment tensor (unit: N‧m), which seems contradictory. Moreover, in the paper "Introduction to the spectral element method for three-dimensional seismic wave propagation" and in the question "Reciprocity test for visco-mechanical wave propagation #1081", I see that the external source used by the predecessors is also force (unit: N). So, what should this amplitude refer to? Is it possible to use displacement time history as an external source?
Question 2: In the file name of the simulation result in Specfem2D soft (e.g. AA.S0001.BXX.sem*), do BXX and BXZ refer to both X and Z directions or XX and XZ directions? If it is XX and XZ directions, how should I understand these two directions? Do they have any connection with P-wave, SV-wave, and SH-wave directions?
Yours sincerely,
Zheng Wang
The text was updated successfully, but these errors were encountered:
Dear seniors,
I wish the families of all seniors healthy. SPECFEM2D is a very meaningful software and I have been installing, running, and learning it for over a year now. Since I am a graduate student in civil engineering, I still have some questions that I don't understand after all this time. I would be appreciated your guidance.
Question 1: In the external source file, when using the option time_function_type = 8, the external input source is a file containing time and amplitude, does amplitude here refer to displacement (unit: m)? However, the options of source_type are only force (unit: N) and moment tensor (unit: N‧m), which seems contradictory. Moreover, in the paper "Introduction to the spectral element method for three-dimensional seismic wave propagation" and in the question "Reciprocity test for visco-mechanical wave propagation #1081", I see that the external source used by the predecessors is also force (unit: N). So, what should this amplitude refer to? Is it possible to use displacement time history as an external source?
Question 2: In the file name of the simulation result in Specfem2D soft (e.g. AA.S0001.BXX.sem*), do BXX and BXZ refer to both X and Z directions or XX and XZ directions? If it is XX and XZ directions, how should I understand these two directions? Do they have any connection with P-wave, SV-wave, and SH-wave directions?
Yours sincerely,
Zheng Wang
The text was updated successfully, but these errors were encountered: