A5084615988- Methane Hydrates and Related Phenomena
- Climate change and permafrost
- Geology and Paleoclimatology Research
- Cryospheric studies and observations
- Geological formations and processes
- Geological Studies and Exploration
- Arctic and Antarctic ice dynamics
- Hydrocarbon exploration and reservoir analysis
- Seismic Imaging and Inversion Techniques
- Geological and Geophysical Studies
- Seismology and Earthquake Studies
- Seismic Waves and Analysis
- Geological Modeling and Analysis
Kiel University
2022-2025
GEOMAR Helmholtz Centre for Ocean Research Kiel
2024
Universität Hamburg
2020
Abstract Submarine permafrost in the Canadian Beaufort Sea is relict terrestrial permafrost, which continuously degrading since change of thermal conditions induced by a marine transgression that followed last glaciation. Permafrost degradation has crucial socio‐ecological significance because its thawing can result geohazards like landslides or an increase greenhouse gas emissions. These consequences are mostly regulated state ice permafrost. In this study, we use multichannel seismic data...
Abstract The Canadian Arctic Southern Beaufort Sea is characterized by prominent relict submarine permafrost and gas hydrate occurrences formed subaerial exposure during extensive glaciations in Pliocene Pleistocene. Submarine still responding to the thermal change as a consequence of marine transgression that followed last glaciation. underexplored currently focus several research projects its degradation releases greenhouse gases contribute climate change. In this study, seismic reflection...
Abstract. Large Pleistocene ice sheets have produced glacial structures both at and below the surface in northern Europe. Some of largest most erosive are so-called tunnel valleys (TVs): large deep channels (typically up to 5 km wide 400 m deep, with lengths 100 km), which formed sheets. Although subject many studies, details their formation fill still not well understood. Here, we present an update on distribution TVs southeastern North Sea between Amrum Heligoland based a very dense grid...
During the last 1 Ma in Canadian Arctic, permafrost and permafrost-associated gas hydrates formed extensively due to mean annual subaerial temperatures of approximately -20°C. Following glaciation, a marine transgression occurred former terrestrially exposed shelves became inundated, resulting present submarine bottom water around -1°C. Relict Beaufort Sea are still responding this thermal change their ongoing degradation. Thawing destabilisation can release previously...
Within the ICDP-funded project COSC (Collisional Orogeny in Scandinavian Caledonides), mountain building processes are investigated with help of two ~2.5 km deep fully cored boreholes Central Sweden. Drilled 2014, borehole COSC-1 near Åre studied emplacement high-grade metamorphic allochthons and obtained a section through Lower Seve Nappe as well underlying mylonite zone. The second COSC-2, drilled 2020 Järpen/Mörsil, focuses on defining character age deformation...
<p>In the Canadian Arctic, permafrost and permafrost-associated gas hydrates formed extensively during last 1 Ma. After glaciation, a marine transgression followed former terrestrially exposed shelf areas became submerged. Subaerial mean annual temperatures of -20°C or even less changed to present submarine bottom water near -1°C. The relict in Beaufort Sea still react this ongoing thermal change which results their continued degradation. Thawing...