Using the method the electromagnetic responses for halfspace and twolayered earth models are tested. Compared with traditional numerical filter method,the result shows that the direct integration technique can improve the frequency response simulation accuracy of electromagnetic soundings for 1D earth,and gives calculating base of obtaining the very late time electromagonetic responses with high accuracy.
The estimated age of the depression is supported by kinematic data on the region; the calculated thickness of the lithosphere coincides with the value estimated from data of magnetotelluric sounding here.
A method of approximate magnetotelluric sounding (MTS) data inversion is developed on the basis of the representation of the inverse operator by an artificial neural network in classes of geoelectric structures.
Electrical conductivity profiles constructed from magnetotelluric data and thermograms from the boreholes near magnetotelluric sounding (MTS) points are used for estimations.
A study of the geoelectrical structure of the central part of Piton de la Fournaise volcano (Réunion, Indian Ocean) was made using direct current electrical (DC) and transient electromagnetic soundings (TEM).