Ž . We present a new finite element FE method for magnetotelluric modelling of three-dimensional conductivity structures. Maxwell’s equations are treated as a system of first-order partial differential equations for the secondary fields. Absorbing boundary conditions are introduced, minimizing undesired boundary effects and allowing the use of small computational domains. The numerical algorith...

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. ...

Inversion of MT data is an inherently nonunique and unstable problem due to the ill-posedness of the electromagnetic inverse problem. A variety of models may fit the data very well. To overcome this illposed nature of the inverse problem, we use Tikhonov’s regularization in which the ill-posed problem is replaced by a family of well-posed problems. We also analyze the behavior of the Tikhonov r...