Tomography Model
D'' discontinuity
Low Velocity Province at the CMB
Weighting Scheme

DSM (Direct Solution Method) software

Upgraded software for computing synthetic seismograms for spherically symmetric Earth models is available. Software both for a single processor and for multiple processors (using MPI) is prepared.

  • Higher frequency computations (e.g. up to 2 Hz) for TI media
  • Rigorous computations without using any approximations other than numerical discretization
  • 3-component seismograms in a single job (no necessity for separate computations for P-SV and SH components)
  • Outputs in the SAC binary format

download (for multiple processors; dsmti-2.2.10.tar)
download (for a single processor; dsmti-3.1.8.tar)

<Example Synthetic Seismograms>

  • Kawai, K., Takeuchi, N. & Geller, R.J., 2006. Complete synthetic seismograms up to 2 Hz for transversely isotropic spherically symmetric media, Geophys. J. Int., 164, 411-424.
  • Takeuchi, N., Geller, R.J. & Cummins, P.R., 1996.  Highly accurate P-SV complete synthetic seismograms using modified DSM operators, Geophys. Res. Lett., 23, 1175-1178.
  • Cummins, P.R., Geller, R.J., Hatori, T. & Takeuchi, N., 1994.  DSM complete synthetic seismograms: SH, spherically symmetric, case, Geophys. Res. Lett., 21, 533-536.