I wrote for my previous client GEOTEM Ingeniería S.A. de
C.V. in Mexico City a small
MATLAB-GUI to convert
EDI-files from Magnetotellurics (MT) to the right input-format to run
inversions with the free and open-source 2D inversion
MARE2DEM. It is out of
reach for small engineering companies to be sponsor of a consortium like the
Scripps Seafloor Electromagnetic Methods
Consortium. We are therefore very
grateful that they make
MARE2DEM open-source and freely available to the
general public. Carlos Pita, the owner and general director of GEOTEM, agreed
Edi2Mare as free and open-source software, just as
thanks to him! We hope it is useful to others, and welcome improvements and bug-fixes.
You can find Edi2Mare on GitHub, published under the GNU General Public License GPLv3.
What follows is a screenshot of the GUI, and an excerpt from the README-file on GitHub:
Edi2Mare is a little GUI to help you to convert EDI-files into the correct
format to run inversions with
MARE2DEM. Its development has been sponsored by
GEOTEM Ingeniería S.A. de C.V. (http://geotem.com.mx) in Mexico City, and
it has been released to the public under the GNU General Public License V3. So
far it has only been used with files created with
ProcMT and with
MARE2DEMis a parallel adaptive finite element code for 2D forward and inverse modeling for electromagnetic geophysics. It was developed with funding support from the Scripps Seafloor Electromagnetic Methods Consortium, http://mare2dem.ucsd.edu.
ProcMTis free and open-source software to process MT data, provided by Metronix Geophysics, http://geo-metronix.de.
WinGLinkis a multidisciplinary software program developed to process, interpret and integrate several geophysical disciplines in a unique interpretation model, developed by Schlumberger http://www.slb.com.
Edi2Marewas programmed in the Linux-version of
Matlab R2012b. It was not tested outside this environment (not with other versions of
Matlabnor on Windows/Mac).
Edi2Marewas created to solve a problem. However, there is lots of room for improvements. If you find
Edi2Mareuseful, and have the time to improve the code, then please go ahead!
Edi2Marewas only tested with
Edi2Mare you can:
Edi2Marewill create the file
*.emdata, which can subsequently be loaded with
- Correct for Static Shift by using TEM-data; automatic estimation is possible.
- You can use
*.wln-files, exported from WinGLink, instead of
- Adjust the altitude of the receivers, Z-shift (
MARE2DEMrequires that all receivers are in the subsurface).
- Define the inversion-line (0-point and angle) and select the receivers for this line.
- Select the frequency-band that goes into the inversion.
- Deselect bad data.
- Define error levels.
- Show Robert L. Parkers D+ approximation.