Reference velocity file
When solving for velocity anomalies (solve_anomaly = T), you must pass a reference velocity model through this file. The filename can be arbitrary but needs to be specified in a main parameter file using the parameter v_ref_mod_in.
Format
| 1st column | 2nd column | 3rd column |
|---|---|---|
| Depth (km) | Vp (km/s) | Vs (km/s) |
An example is here.
Note
- DEPTH INCREMENTS MUST BE CONSTANT.
- The part shallower than the seafloor is ignored. The inversion fixes the Vp of the ocean layer at value of the parameter vp_ocean (1.5 km/s by default).