ZondMT2D

ZondMT2D 是地球物探分析软件Zond的模块之一，是一款的大地电磁二维反演软件。

ZondMT2D软件设计用于在MT，AudioM和RadioMT频率范围内对大地电磁（MT）数据进行二维解释。

这组电勘探方法基于对自然客店电磁场的研究，可以研究从初期的几米到十几万公里。由于表皮效应现象的存在，调查了电阻率随深度的分布情况，该现象定义了电磁场穿透深度与频率的关系。因此，MT曲线反映了电阻率随深度的变化。舒适的界面和广泛的数据显示可能很大限度地解决给定的地质问题。在开发软件时，注意其使用的舒适的界面和简便性，可视化功能以及先验数据的考虑。根据解释器的选择，软件会提供不同的数据解释算法变体。舒适的控制系统使您可以从大量的当量结果中进行选择，从地球物理和地质的角度来看，这些结果似乎是好的。ZondMT2d代表了大地电磁测探的先后才能解决方案，解决了从数学建模和灵敏度分析到现场数据处理和解释的广泛问题。方便的界面和数据可视化功能可很大程度地解决广泛的地质问题。ZondMT2d使用明了的数据文本格式，可以组合观测系统，地形信息和附加信息。还众所周知的数据格式（Mackie，Rebocc，EDI，J，USF）。

【英文介绍】

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.

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 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.