f Physical modelling of frequency sounding and transient electromagnetic sounding

Frequericy sounding (FS) and transient sounding (TS) are used to solve various geologic problems from ore prospecting and engineering survey in relatively near surface sections (FS), to oil and gas prospecting in large depths and Barth crost structure investigations (TS,TS-fixed source sounding). One of the major problems of the acquired data interpretation is taking account of model errors caused by non-horizontality of geologic interfaces studied as well as estimation of lateral effects of local and extended inhomogeneities of the medium on the sounding data.