Short note: GPU accelerated 3D wave propagation and continuous coil shooting

SEAM Dataset and 2D data

The model used to create the data was the latest iteration of the SEAM model, and for the 2D case a variable density two-way wave propagation algorithm was used. For the 3D modelling a constant density 3D GPU code was used, with the view of extending this to variable density. The SEAM model itself is extremely large, with over 20 billion samples, and so a small section of the data was windowed. A representative view of this windowed section can be seen in Figure 1.

3dslice
Figure 1. A cubeplot of the windowed section of the SEAM data.

Within this section, a salt body with an allochthonous arm extends into the sediments. Above the salt there is a carbonate layer, and the sediments are finely layered with an increasing velocity with depth.

2dshot
Figure 2. A subsurface shot at 1km depth.

Figure 2 shows an example of a simulated shot from the SEAM dataset.

Short note: GPU accelerated 3D wave propagation and continuous coil shooting