A Simple Program for FWI

Solution method:

• High-order finite-dfference time-domain (FDTD) for modelling on regular grid
• steepest descent

Governing equation:

• 2nd order acoustic wave equation

Credit

• Yang P. A numerical tour of wave propagation[R].

• Plessix R-E. A review of the adjoint-state method for computing the gradient of a functional with geophysical applications[J]. Geophysical Journal International, 2006, 167(2): 495–503.

• Virieux J, Operto S. An overview of full-waveform inversion in exploration geophysics[J]. GEOPHYSICS, 2009, 74(6): WCC1–WCC26.

Code structure

• src: the source code in .c
• include: the header files in .h
• bin: the folder to store executable after compilation
• layer_model: a quick fwi example in layered medium

Instructions to run

1. go to /src and compile: cd /src;make
2. configure input parameters in run.sh
3. go to running template and test: bash run.sh