Travel-time Mesh Generation

In mesh generation, E4D can create a mesh that conforms to known subsurface boundaries such as borehole boundaries, water table boundaries, or the boundaries of buried tanks and other structural features. E4D can also create distinct zones within the mesh, which are the primary units whereby model constraints are defined to regularize or otherwise inform the inverse problem. Known boundaries incorporated into the mesh facilitate accurate travel-time data simulation in forward modes, and inform the inverse operation in inverse modes.

E4D uses the third party open source program triangle to construct a high quality triangular surface boundary of the tetrahedral mesh. This surface mesh is used as input by E4D to generate files to be used by the open source tetrahedral mesh generator tetgen .