Marine electromagnetic soundings at the shelf of black sea with the use of seafloor receivers
(Bobrov N.Yu. Kocherov A.B. Malovichko M.Yu. Petrov A.A. Sergeev M.B. )
Results of a marine controlled-source electromagnetic (CSEM) survey with the use of seafioor receivers are presented. The survey was carried out at the shelf of the Black Sea in 2011. The aim of these measurements was to detect geological objects containing hydrocarbons. The peculiarities of technology are the surface-towed source and the use of both frequency and time domains. Frequency-domain CSEM (geometrical sounding) allows for detecting zones of anomalous resistivity. With the help of the time-domain CSEM (transient electromagnetic sounding) it is possible to evaluate parameters of the induced polarization. Effectiveness of the technology at the sea depths from 100 to 300 m is demonstrated.......