Device for measuring the apparent resistivity of soil

摘要

The present invention relates to devices for measuring the apparent resistivity of soil. The device according to the invention is essentially characterised in that it comprises two magnetic loops 3, 23 centered on one and the same axis 40 and located in two parallel planes 41, 42, means 50 for magnetically coupling the two magnetic loops, a detector/demodulator 9 whose inputs 7, 8 are connected to the output terminals 5, 6 of the magnetic loop 3, two electrodes 21, 22 capable of interacting with the soil 2, by contact of their ends 43, 44 with this soil, these two ends and the axis 40 of the two magnetic loops being located in one and the same plane, means 24 for connecting the two electrodes respectively to the output terminals 25, 26 of the magnetic loop 23, and controllable means 30 for short-circuiting the magnetic loop 23. Application, in particular, to mapping for achaeological research, pedology, civil engineering, low-depth mineral prospecting, etc. IMAGE