We describe a seismic modelling program based on modules designed to perform forward modelling and reverse time migration, and show results derived from the code. The software we used demands that we provide a velocity model and necessary parameters, which must be fed to a central repository in predefined structures from which the forward modelling and migration software read the required information.
We perform forward modelling and reverse time migration on a simple velocity model consisting of three horizontal layers. To demonstrate the output to be expected from the forward modelling and reverse time migration software, we migrated a shot record with a split spread configuration, having 800 receiver locations spaced 10 meters apart.
The migrated shot record from AxRTM produced desirable results. However, there are some low frequency artifacts that need to be filtered for improved result. The forward modelling and reverse time migration program have been benchmarked and compared with corresponding programs in CREWES Matlab toolbox.
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