Magnetotelluric Monitoring of Geodynamic Processes

Dear Colleagues,

This Special Issue focuses on magnetotelluric monitoring of the Earth’s crust aimed to detect and characterize the geodynamic processes taking place in seismically and volcanically active regions and in areas where crucial systems are located such as mining, natural/enhanced geothermal fields, waste fluid injections in disposal wells, etc.

In seismic active areas, for example, the interrelation between the stress–strain state of the medium and its conductivity changes due to a redistribution of the mineralized fluid within the rock fracture network has been conceptually and experimentally confirmed by laboratory tests. The detectability of such a process and the characterization of its spatial and temporal scale require monitoring experiments, which could allow for complete analysis of MT response and of its temporal changes. Despite the well-known sensitivity of the magnetotelluric (MT) method to contrasts in conductivity at depth, however, few long-lasting MT monitoring experiments have been performed.

During recent years, efforts have been greatly intensified to better understand the physical properties of seismoelectromagnetic signals, accompanying seismic wave fields radiated from earthquakes promoting the installation of permanent MT stations, colocated at seismic stations. Neighboring fields of research encompass also the study of space weather as a complementary tool in the earthquake prediction and in the forecast of so-called geomagnetically induced currents representing a severe threat to modern technological infrastructures.

This Special Issue aims at collecting all research developments related to an extension of MT technique as a monitoring tool combining multidisciplinary approaches applied as electromagnetic times series analysis, geophysical, and geological methods to achieve a better understanding of Earth’s electromagnetic environment toward developing innovative monitoring techniques and to provide a comprehensive update of the state of the art relating stress changes in the lithosphere, geohazards, and space weather.

Dr. Marianna Balasco
Dr. Gerardo Romano
Guest Editors

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• magnetotelluric field
• electromagnetic monitoring
• seismoelectrical phenomena
• geohazard
• space weather