Important
In the spring of 2022, a new suite of FDEM OcTree codes were compiled: E3DRH, E3DRH v2 and E3DRH v2 tiled. These codes use a right-handed coordinate system; as opposed to the modified left-handed coordinate system used by E3D, E3D v2 and E3D v2 tiled. You are currently viewing the manual for the package which uses ‘e3drh_v2_tiled.exe’ to forward model and invert FDEM data. The manual for the original E3D v2 tiled package (which uses ‘e3d_v2_tiled.exe’) can be found here .
4. Running the programs
This section provides describes how to run all executables pertaining to the E3DRH version 2 tiled package.
Note
All executable files, input files, output filenames and files specified within input files can be specified in the following manner:
as just the filename if contained within the current working directory (Example: filename.txt)
as a file path relative to the current working directory (Example: sub_dir\filename.txt)
as the full path (Example: C:\Users\Name\Tests\filename.txt)
Executable files should not be renamed. However, input file names can be specified by the user if desired.
The main executable programs within the AEM program library are:
e3drh_v2_tiled: Single executable file for carrying out forward modeling and inversion of FEM data
create_octree_mesh_e3d_v2_tiled: creates a global OcTree mesh for the inversion based on the survey geometry and a set of local OcTree meshes about each transmitter and its receivers
The following Octree utility programs are also used:
blk3cellOct: creates a conductivity model on the OcTree mesh
extract_mesh: extracts a specified local OcTree mesh from a hexidecimal file containing all local meshes
create_weight_file: creates cell weighting for the recovered model
interface_weights: creates weights on the faces of cells for the recovered model
Contents:
To learn the specifics of running each executable, see the following sections: