*************************************
*** README for Grflt8 (2001, Dec) ***
*************************************

* grflt8.f + grfft8.f + splin8.f compute the Green's functions using the 
  bi-cubic spline interpolation on a rectangular plane

1) phs3.f: phs3.f computes the phase velocities of the surface waves using
  input data "grflt8.in".
2) grflt8.f: grflt8.f computes the Green's functions at the grid points
   of the rectangular plane. grflt8.in is the input data, where the rectangular
   plane is defined as the same manner of the fault plane (the origin point,
   and the strike & dip angles). Also, the length and the number of points are
   assigned along the strike and dip directions. The output data is grflt.dxyz.
3) grfft8.f : grfft8.f computes the waveforms at the grid points of the
   rectangular plane using FFT. The input data is grflt.dxyz, and the output
   data is wave_dat.
4) splin8.f: splin8.f computes the waveforms at the arbitrary points on the 
  rectangular plane using the bi-cubic spline interpolation. The input data for
  the output locations is spline8.in, and the waveform data at the grid points 
�@is wave_dat. The output waveforms are stored in mat0_dat for NOB (Num. of 
�@Observation Points), NT (Num. of delta-Times), and DT (Delta Time), matx_dat,
�@maty_dat, and matz_dat for the waves for X-NS, Y-EW, and Z-UD components.
5) wavex.m, wavey.m and wavez.m : They are the Matlab M-files for plotting 
  waves for X-NS, Y-EW, and Z-UD components.