Head of the department: RNDr. Eduard Petrovský, CSc.
The geomagnetic department is engaged in the research of a wide range of geomagnetism-related issues, from modelling the Earth’s magnetic field through the measurement of its changes to the occurrence of magnetic iron oxides in the environment. The natural changes of the Earth’s magnetic field induce electric currents in the Earth that allow us to study the structure of the Earth’s crust to depths of hundreds of kilometers. On a microscopic scale, we deal with the magnetic properties of minerals and rocks, especially various forms of iron oxides. An important part of the department is the Geomagnetic Observatory in Budkov. This research is carried out in cooperation with foreign colleagues, especially from Slovakia, Poland, Germany, Bulgaria, etc.
The department is divided into 4 groups:
Geomagnetic activity – The magnetic field of the Earth is permanently influenced by dynamic processes that have their solar sources. Our research is focused partly on the relation between solar and geomagnetic activity aimed at improving the methods of geomagnetic activity forecasting, partly due to the influence of geomagnetic activity on weather and climate. The geomagnetic field is continuously monitored at the Observatory in Budkov and the data is uploaded online to the INTERMAGNET network. Forecasts of geomagnetic activity are delivered to Czech TV.
Head: Pavel Hejda
Geodynamo – This group numerically models the thermodynamic and hydrodynamic processes in the core of the Earth, that are the source of the magnetic field of the Earth and other planets. We use powerful supercomputers and various numerical models developed in collaboration with foreign colleagues.
Head: Ján Šimkanin
Magnetotellurics – This group studies the geological structure of the Earth’s crust and the upper mantle by means of electric currents caused by changes in the Earth’s magnetic field. This activity is based on frequent field measurements. Results in the form of electrical conductivity sections can be interpreted in terms of the Earth’s structure from the first hundreds of meters to about 100 kilometers.
Head: Josef Pek
Magnetism of rocks – This group studies the magnetic properties of minerals and rocks, especially various forms of iron oxides. The type of iron oxide, concentration, shape and size of the grains indicates the source from which these particles originate and which processes influenced their existence. We study, for example, the formation and development of different soil types, their erosion or pollution caused by various factors.
Head: Eduard Petrovský