Worldwide case studies
An insight into recent major scientific advances in the field of fluid flow and gas hydrate research.
Biogeochemical controls on carbon cycling through the biosphere, geosphere, hydrosphere and atmosphere. Particular attention will be given to the geological controls of the cycle as they relate to organic matter burial, methane production, methane utilization, and fixation of methane oxidation bioproducts in authigenic carbonates.
The topic will cover sediment pore-water chemistry at active cold fluid release systems and geochemical indications of anaerobic oxidation of methane, decomposition and formation of gas hydrates, permafrost melt and ground water discharge. Mineral precipitation fueled by active fluid flow systems will be covered, including precipitation of methane-derived authigenic carbonate, phosphorous and ferrous minerals.
Migration and impact on the seafloor
Geological controls on fluid flow through the sediment and its response to fluid expulsions at the seafloor. The topic will cover the internal structure of fluid migration conduits (e.g. gas chimneys or pipes) and formation of fluid flow-related seabed features – pockmarks, mud volcanoes, craters, gas domes, pingo-like features.
Introduction to cutting-edge methods of subseabed and seabed visualization and studying properties of fluid flow environments. The main focus of the topic is marine seismic and hydroacoustic methods.
Geological settings and kinetics of gas hydrates in various marine and terrestrial realms. Advances in geophysical/geochemical observations and modeling of gas hydrate systems worldwide. A special emphasis will be given to interactions between gas hydrates and fluid flow systems on continental margins.
The role of microorganisms, meio- and macrofauna in carbon cycling, including methane generation and consumption in sediments and on the seabed. Examples of modern methane seep-related communities and their paleo analogs will be discussed. Applicability of molecular fossils (biomarkers) to reconstruct past methane release will be covered.
Role of water mass circulation on seabed-to-seasurface methane transport. The fate of free and dissolved gas will be discussed in close connection with ocean settings.
Monitoring of methane seepage
Cutting-edge technologies of in-situ observations and measurements of methane seepages.