This note presents a brief synopsis of analysis of magnetotelluric data for model dimensionality and strike and its application to the data used in the main paper. Magnetotelluric (MT) data begin as time series of horizontal magnetic (H) and electric (E) fields collected at Earth's surface. After cross-correlation of the field components in orthogonal measurement directions (x,y), the frequency...

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We review and describe the electromagnetic transmitters and receivers used to carry out magnetotelluric and controlled source soundings in the marine environment. Academic studies using marine electromagnetic methods started in the 1970s but during the last decade these methods have been used extensively by the offshore hydrocarbon exploration industry. The principal sensors (magnetometers and ...

The magnetotelluric (MT) component of the USArray survey is a unique data set that enables imaging electrical conductivity distribution from surface down to astenospheric depths. Here, we present new 3-D model (MECMUS-2022) derived by inverting 1291 MT stations covering ∼80% contiguous United States on quasi-regular 70-km grid. inversion was performed using novel multi-scale approach can consis...

Neural network is one of the new soft computing methods commonly used for prediction of the thermodynamic properties of pure fluids and mixtures. In this study, we have used this soft computing method to predict the coefficients of the Antoine vapor pressure equation. Three transfer functions of tan-sigmoid (tansig), log-sigmoid (logsig), and linear were used to evaluate the performance of diff...

In this paper, we report a preliminary result of the Magnetotelluric investigation Mogod area. The region is one most prominent fields for geophysical study since includes young and active faults geothermal activities. We conducted magnetotelluric measurements at 20 sites during field seasons in 2018-2021 as pilot survey to understand data property electromagnetic noise level detailed studies. ...

In this study, the aim is to propose a new method for fuzzification of nested dummy variables. The fuzzification idea of dummy variables has been acquired from non-linear part of regime switching models in econometrics. In these models, the concept of transfer functions is like the notion of fuzzy membership functions, but no principle or linguistic sentence have been used for inputs. Consequen...

When we study and process magnetotelluric data, the earth’s interior structure is usually equated with isotropic medium in the existing approaches. When the underground structure is complex, there is serious resistivity anisotropy in macroscopic view, and then the traditional processing and interpretation methods often produce wrong results. For that we must establish the study method based on ...