In these exercises, you will get your fingers a little dirty, playing with PySIT scripts to perform 2D inversion.
For these exercises, you will be using PySIT. A sequence of demos in PySIT are provided, each with a number of areas that can be 'tweaked' (e.g., wavelet frequency, number of shots, number of optimization steps, etc.). You should play around when these parameters and get a better feel for the FWI process.
Inside the demo scripts, areas that you should try modifying are marked with ################## !!!!!! ###################
.
For Windows users it is critical that you start ipython with the pylab option: ipython --pylab
Then, from the IPython console, you can run your script with the command:
%run demo.py
Demo 1: Horizontal Reflectors in 2D (Time Domain) HorizontalReflector2DTemporal.py
This example was demonstrated in the introduction talk and is described in more detail here.
Tweakable parameters:
Demo 2: Horizontal Reflectors in 2D (Frequency Domain) HorizontalReflector2DFrequency.py
Tweakable parameters:
Demo 3: Minature Marmousi Patch (Time Domain) Marmousi2D.py
Tweakable parameters:
Demo 4: Horizontal Reflectors in 1D (Time Domain) HorizontalReflector1DTemporal.py
This is essentially what you developed in computer problems 1-3. Consider moving the location of the receiever.
Tweakable parameters: