Class at Faculty of Mathematics and Physics |

NGEO061

* Global EM induction

EM induction equation in spherical coordinates, 1-D and 2-D problems, semi-analytical solution for nested-spheres model. Use of satellite data in induction studies. Magnetic signals generated by tides and ocean flows.

* Magnetotellurics

Equation of EM induction, TE and TM modes. Electrical conductivity of Earth materials. External fields. Transfer functions: from theory to practical calculations. Distortions of MT data. Forward and inverse modeling. Instrumentation. Applications in prospection.

* Electrical conductivity

Conductivity mechanisms, pressure and temperature dependence, conductivity of multiphase materials, experimental measurements.

* Field exercises (in cooperation with Institute of Geophysics, Czech Academy of Sciences)

Practical measurements. Instrument installation, data acquisition, processing, and interpretation.

Follow-up lecture to the NGEO080 aiming at theoretical and practical aspects of EM induction technique on different spatiotemporal scales.