Details of the Abstract
| Title of paper | New electromagnetic and induced polarization technology: interpretation and results of field experiments |
| List of authors | I.V. Dorofeev, V. Hallbauer-Zadorozhnaya, A.V. Parshin. |
| Affiliation(s) | The Siberian School of Geosciences, Irkutsk National Research Technical University, Russia. |
| Summary |
The electromagnetic and induced polarization (EMS-IP) was developed and intensively used at the Siberian School of Geoscience. Irkutsk National Research Technical University, Russia. This method combines two groups of methods: the transient EM method at time off and the DC and IP methods during time on. In the EMS-IP method, the source of electrical current is a series of rectangular bipolar pulses transmitted to a long grounded electrical line AB. It allows to calculate the transient process at given time windows, normalized it to the potential difference ∆U taken before turning off the current pulse. The technology allows us to simultaneously determine the measured apparent electrical resistivity of the medium (ρ_k), the inductive component of the signals (TEM methods), and the IP effects, more likely can be distinguished using a multi-electrode grounded receiving arrays. Field works are carried out using specially developed instrument MARS, which composed of transmitter and receiver modules. For interpretation of EMS-IP data the method of “flowing” S-plane was adapted to the used arrays. The use of the EMS-IP method has shown its high efficiency in delineation of the structural features of sections and electrical properties of rocks and dispersed sulphide ores exploration. |
| Session Keyword | 3.0 EM methods for exploration (geothermal, mineral resources, etc.) |
| File upload |
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