ZondMT2D for Two-Dimensional Interpretation of Magnetotelluric (MT) Data Software
ZondMT2d software is designed for two-dimensional interpretation of magnetotelluric (MT) data in MT, AudioМТ and RadioMT frequencies range. This group of electroprospecting methods is based on studying of the natural variable electromagnetic field, allows to study distribution of the Earth conductivity on depths from the first meters to many tens and hundreds kilometers. Investigating of distribution of resistivity with depth possible due to the phenomenon of skin-effect which defines the depth of electromagnetic field penetration vs frequency. Thus, MT curves reflect change of resistivity vs depth.
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Comfortable interface and wide possibilities of da...
Comfortable interface and wide possibilities of data presentation allow to solve given geological problem with maximum effectiveness. While developing software special attention was payed to comfort and simplicity of its use, variety of visualization features and account of a priori data.
Depending on the interpreter’s choice, software gives different variants of data interpretation algorithms. Comfortable control system allows to choose from the great number of equivalents results that will appear to be the best in geophysical and geological point of view.
ZondMT2d represents ready solution for magnetotelluric soundings, and solves wide range of problems from mathematical modeling and sensitivity analysis to field data processing and interpretation. Convenient interface and variety of data visualization features allow to solve wide range of geological problems with maximum effectiveness.
ZondMT2d uses simple and clear text format of data allowing to combine easily various systems of observation, including information on topography and another additional information. Also well-known formats of the data (Mackie, Rebocc, EDI, J) are supported.
Important stage which prevents field measurement i...
Important stage which prevents field measurement is mathematical modeling of geoelectric structure of work site. Modeling gives a chance to estimate the frequencies range and to make a choice of optimum parameters of the observation system for decision of formulated geological problem. ZondMT2d has great range of tools for mathematical modeling and analysis of TM/TE natural electromagnetic fields.
The program allows to invert data of magnetic TM and electric TE polarization separately or together; to set relative weight for polarizations, to apparent resistivity and phase; invert data using apparent resistivity and phase, or imaginary and real component of impedance; invert data and P-shift(static) of apparent resistivity.
As the general task of the program is inversion of geoelectric parameters, some variants of inverse problem are realized in ZondMT2d, basic of them are: smoothing inversion – to get smooth model and focusing — to get piece-smoothed modelof geoelectric parameters with depth.
While program was designed special consideration given to a priori data accounting. Because of equivalence of inverse geophysical problems, quality of the obtained results strongly depends on the amount of a priori data used. In ZondMT2d there is possibility of weights setting for measurements, fixing and limits making of changing features of different cells, using of a priori model as reference in inversion. The robust schemas of noise estimation are realized in the software. There is also possibility to import and display results of measurements by other methods and cross-boreholes data that improved quality of results.
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