Assessment Of Magnetotelluric Sounding Inversion Method And Research For Geothermal Exploration

In this paper, firstly we studied the inversion methods and programmed the computer to execute them. Secondly, by doing many modeling tests about rapid relaxation inversion(RRI),OCCAM inversion and nonlinear conjugate gradient inversion(NLCGI),we did research on the following characteristics: the relation between initial model and imaging effect, the stabilization of the convergence process and the dependability of the inversion result. Then, according to the conclusions of above-mentioned experiments, we thought out a ameliorative inversion method, namely the joint application of one-dimensional OCCAM inversion and two-dimensional NLCGI . Finally, by using of modeling data and actual observation data our experimentations have proved that this simple reformative method is highly effective in practice.