TO DO: discuss the filter parameters applied for emod3d and signal processing
Simulation for a homogeneous domain of size 300x300x150 (x,y,z):
Vs=2.5km/s; Vp=5.0km/s; dt=0.04s; dh=1.0km; t=120s; dtts=10.
Fmax=5.0 Hz, Fmin=0.01Hz, elas_only=0;
#Padding zone: dampwidth=20, qbndfac=0.3
Double – couple source in vertical direction, Gaussian shape with fc=1Hz (1s period) at x=90, y=90, z=50. |
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Comparison of the floor high-cut filters using for emod3d forward modelling
Exx normal strain component plotted for 300 time steps using flo=1.0 |
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Exx normal strain component plotted for 300 time steps using flo=0.25 |
Comparision of adjoint sources with and without seismogram filtering
Backward wavefield using filtered adjoint source, high frequency noise generated Plot for 500 time steps |
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Backward wavefield without adjoint source filter flo=0.05 |