[Woith] more – mofette research

German Title: more – mofette research

Abbreviation: 396

Current Status: completed with report


Main Applicant:Dr. Heiko Woith


Resources Recipient

Prof. Dr. Johannes Barth


Other Persons

Bernhard Prevedel
Dr. Samuel Niedermann
Jochem Kück
Prof. Dr. Torsten Dahm
Dr. Ulrich Harms
Dr. Thomas Wiersberg


Conveyor Begin: 1 April, 2019
Conveyor End: 31 March, 2021
Conveyor Duration: 24
Year: 2019


Description

Mofettes are gas emission sites where CO2 ascends through conduits from as deep as the mantle to the Earth’s surface and as such provide natural windows to magmatic/volcanic processes at depth. The primary objective of the proposed research on mofettes is to clarify the physical link between fluid properties, their pathways and earthquakes. The suggested state-of-the-art fluid monitoring techniques allow for a high temporal resolution and are completely different from the discrete sampling approach used in the last decades. Gas composition and its isotope signature will be continuously analysed in-situ at different depth levels. Unique in the world, ascending mantle fluids will be tracked along a vertical gradient in a set of drillings from a depth of a few hundred metres to the surface.
This can provide hints on the origin of temporal variations related to the opening of fault-valves, admixture of crustal fluids to a background mantle-flow or the release of hydrogen during fault rupturing. As a test area the Hartoušov mofette has been chosen as a key site. Detailed measurements before, during and after drilling of a 300 m deep well will be carried out to realize possible influences of the drilling activity on the local and regional fluid regime. Periodically, samples for noble gas isotope analysis will be collected. This proposal is directly linked to the drilling of the fluid-borehole scheduled for 2019 in the frame of the ICDP project “Drilling the Eger Rift: Magmatic fluids driving the earthquake swarms and the deep biosphere

Related Publications

Daskalopoulou, Kyriaki, Woith, Heiko, Zimmer, Martin, Niedermann, Samuel, Barth, Johannes AC, Frank, Alexander H, Vieth-Hillebrand, Andrea, Vlček, Josef, Bağ, Cemile Dilara, Bauz, Ralf (2021). "Insight Into Hartoušov Mofette, Czech Republic: Tales by the Fluids" Frontiers in Earth Science p193


Woith, Heiko, Daskalopoulou, Kyriaki, Zimmer, Martin, Fischer, Tomáš, Vlček, Josef, Trubač, Jakub, Rosberg, Jan-Erik, Vylita, Tomáš, Dahm, Torsten (2020). "Multi-level gas monitoring: a new approach in earthquake research" Frontiers in Earth Science 8