The aim of my PhD project is to improve our comprehension of methane related processes in lacustrine sediments in Svalbard as well as northern Norway and Sweden.

Through the stable isotopic analyses of sediment cores, I investigate the origin and age of organic matter that serves as source for methanogenesis, and how they influence net methane emissions on decadal to millennial timescale.

I will thus explore whether - and to what extent - the CH4 contribution by Arctic lakes to the ongoing global changes may be influenced by different climatic periods in the recent past.

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Analytical biogeochemistry, aquatic environmental geochemistry, glaciers

Research interests:

Stefan has a strong background in marine geology and geophysics, specializing in areas such as fluid flow, gas hydrate systems, marine geohazards, oceanic heat flow, CO2-storage, and seafloor ecosystems. Stefan is proficient in a range of analytical and numerical techniques, including seismic imaging and other geophysical analysis. He is committed to advancing our understanding of the Earth’s oceanic systems, particularly on all aspects of gas hydrate and fluid flow in marine sediments and their role in storing and remobilizing carbon with implications for climate and seafloor ecosystems.

Stefan holds a PhD degree in marine geology and geophysics from UiT The Arctic University of Norway. He has been a professor at the Department of Geology at UiT since 2007. His research contributions are documented in over 80 peer-reviewed publications.

Snow science, Avalanche formation, Wet snow avalanches, Slush flows, Rockfall and Landslides.

Methods that I have used in my research are computer simulations, statistics, snow pit and field measurements, sensor development, drone flights and machine learning.