Within the framework of the ICDP Eger, the research group "Magnetotellurics" (MT) conducted several Magnetotelluric (MT) and Radio-Magnetotelluric (RMT) experiments in the Eger Rift and across maar structures and CO₂ degassing spots and mofettes. Thereby, Rulff et al. (2025) found a correlation of fluids and CO₂ content through the electrical conductivity imaged in the vicinity of mofettes. The area around Nový Kostel further north experiences repeated occurrence of intra-plate earthquake swarms and is characterized by numerous mineral springs and CO₂ emissions. These phenomena are usually related to volcanic activity. Magnetotelluric (MT) data sense the electrical resistivity of the Earth, a physical parameter that is particularly sensitive to the presence of low-resistivity phases such as aqueous fluids, partial melts or metallic compounds. 3D images revealed some deep reaching conductive channels under the well-known spas of Marienbad and Franzensbad that might serve as fluid pathways from the crust-mantle boundary. To better constrain structures below Nový Kostel, additional MT measurements are envisaged.

Time Frame

• 2018 - 2027 

Funding

• DFG
• GFZ

Principal Investogators

• PD Dr. Ute Weckmann
• Dr. Anna Platz

Personnel

• Basel Aleid
• Gregor Willkommen

Cooperations

• Czech Academy of Science, Prague
• TU Berlin

Publications/Results

• Rulff, P., Weckmann, U., Kalscheuer, T., Willkommen, G., Buntin, L. M., Platz, A. (2025 online): Imaging Mofette Structures in the Ohře Rift System, Czech Republic, Using Radio-Magnetotelluric Data. - Pure and Applied Geophysics.