摘要:
In order to increase result accuracy the noise effect during vessel motion is reduced, wherefore direct current pulses are excited the parameters of which are set basing on section conductivity and deposit depth, the electric field is measured simultaneously on pairs of receiving electrodes basing on the spatial averaging of potential of double electric layer that is generated on the boundary of electrode and water during the pulses and pauses between them, and geoelectrical parameters are determined.The device consists of an exciting field generating unit where a switchboard generates pulses on feeding electrodes, a generator consists of two parallel cable lines with emitting electrodes, a non-emitting ballast device that is a pair of alternating electric dipoles with equal moments, and a measuring unit with pairs of sectional receiving electrodes, the total length of an electrode section does not exceed 5% of the distance between the electrodes, and the connection between the electrode elements that are connected to the receiver line through a common input/output provides composition of the EMF that are generated in them.
摘要:
The inventive method for reducing a noise effect during a ship travel consists in generating direct current pulses, the parameters of which are set up according to a section conductivity and the depth of a formation, in simultaneously measuring the electric field on pairs of receiving electrodes on the basis of the space average of a double electric layer potential originated at the electrode-water interface during the pulses and intervals therebetween and in determining geoelectrical parameters. The inventive device comprises a unit for forming an exciting field, in which a switchboard generates pulses on feeding electrodes and a generator consists of two mutually parallel cable lines with emitting electrodes, a nonradiative dummy device in the form of a pair of opposite electric dipoles having equal moments and a measuring unit with pairs of sectional receiving electrodes, wherein the total length of the electrode section is equal to or less than 5% the interelectode distance and the communication between the electrode elements connected to a receiving line via a common input/output makes it possible to add electromotive forces generated therein.