Marine electromagnetic methods are used to probe the electrical resistivity of the seafloor.
The electrical resistivity of rocks depends on the presence and type of pore fluid (sediments), temperature and partial melt fraction (mantle) and amount of conductive SMS minerals (ore deposits).
Thus, electromagnetic investigations have a large variety of applications. Within our electromagnetic work we have developed various experimental setups to investigate:
Within Geomar we develop our own marine seafloor instrumentation which we adapt to the application at hand and also develop modelling algorithm. The instrumentations have been used on a variety of EM cruises all over the world in a variety of national and international projects.