News

Here are some of the many new capabilities that have been added to our products:

• Freespace EikPlate Algorithm: We are pleased to announce the release of a new 3D algorithm which we call Freespace EikPlate. The solution is only for inductive sources and magnetic receivers providing both dB/dt and B(t). Our solutions are based upon the doctoral thesis of Peter Annan and expands upon the older algorithm called UTPLATE which was used for many years in the 1980’s and 1990’s. It is a very fast algorithm but provides a more complete inductive solution than other ring current solutions which require relatively square plates and uniform excitation. At present, the solution is only for 3D inductive sources but we will later be extending for plane wave sources such as in MT and AFMAP/ZTEM.

• Import from QCTool, gdb to QCTool: We have been augmenting more and more of our data import tools to read QCTool files. This allows for user pre-processing of data as well as more stable and rapid importing of large data files. To this end, we have added the ability to directly import Geosoft .gdb files into QCTool.

• MT imports: We have provided significant expansion of the MT data and Induction vector data that can be imported into EMIGMA through the QCTool format. This allows very arbitrary formats to be first imported into QCTool, re-organized and then imported into EMIGMA.

• GDP32 imports: We are rapidly expanding our import capabilities for the Zonge GDP32 system. At present, we have added CSAMT and TEM imports through the older .avg format and will be shortly releasing the same capabilities for the newer .avg format. Later in the summer and early fall, we will be releasing import capabilities for IP that support both old and new .avg formats. Importing of Resistivity, frequency domain IP and time domain IP data will be available as well.

• Phoenix data imports: Users may now import Phoenix TEM data through the .usf file format as well as the CSAMT data via QCTool.

• Topography imports and simulation: We have simplified the steps needed to import XYZ topography data for modeling purposes. Simulation of the topographic effects particularly for potential field has been made easier as well. In addition, we have provided more extensive topography import capability through the use of a QCTool grid file. The user simply needs to import the topographic information to QCTool, grid as desired and then import the resulting grid (.egr) file into EMIGMA to reproduce the topography. The topography may then be subdivided if desired for different material properties.

• Magnetic effects in MT, Induction vectors and ZTEM/AFMAG: Due to the nature of the source, magnetic structures can be very important in natural field responses particularly for induction vectors (Tipper responses) for both ground and airborne data. We have augmented our simulation of plane wave sources to include magnetostatic and current channeling effects on the fields, particularly the magnetic fields.

• ZTEM/AFMAG: EMIGMA is now capable of importing, analyzing and simulating these systems. We have not yet released the tools but these capabilities are now available through our consulting services. Once we are satisfied with the stability of our tools and its representation with field data as represented by the manufacturer, these tools will be available.

• Polyhedral simulation capabilities: We have recently completed a large revamp of these capabilities and performed extensive testing. These upgrades are available through the Update functionality in EMIGMA.

• Terrain in Gravity and Magnetics: The terrain or topographic effects in Gravity and Magnetics are of continuing importance to our developments. Several new capabilities have been made available including: Improved terrain corrections in QCTool, Improved terrain modeling in EMIGMA and the inclusion of terrain in our 3D gravity and magnetics inversion.

Feel free to contact us for further details on any of the above items.