Electromagnetic studies of global geodynamic processes

摘要: The deep electromagnetic sounding (DES) technique is one of the few geophysical methods, along with seismology, gravity, heat flow, which may be use to probe structure Earth's mantle directly. interpretation DESs provide electrical conductivity profiles down upper part lower mantle. extremely sensitive most thermodynamic processes we believe are acting in (temperature increases, partial melting, phase transition and a lesser extent pressure). Therefore, principle, results from DES laboratory measurements could used constrain models these processes.