Investigation of the electrical resistivity structure of the subsurface at Mogod valley in central Mongolia: Insight is using 1D Magnetotelluric inversion

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. During fieldwork, used Lemi instruments measured all three orthogonal components magnetic horizontal electric field. For processing, Matlab code by using M-estimate regression method, estimated transfer function with lownoise level. electrical resistivity model subsurface layout shows us existing anomalies shallow-depth, thickness upper crust approximately 11-17 km. Here, suggest that 17 km 40 local measurements. Additionally, conductor appears southwest region, interpret play source geological activity it might be signature remanent fluid.