IGV seminar series

November 2026

Speaker: James Barnett, PhD student at the Department of Geological Sciences, Stockholm University

Abstract
The Greenland Ice Sheet is out of equilibrium with modern climate and is likely committed to losing mass over the coming centuries. North Greenland is of particular importance as the region houses some of the ice sheet’s last remaining floating ice shelves, which suppress ice discharge into the ocean. Their collapse could accelerate ice loss and sea-level rise. Yet future mass-loss projections remain highly uncertain, as ice-sheet models are often benchmarked only against recent decades of ob-servations. Fortunately, the paleo-record can extend these observations and offer a precedent for how Greenland responds to pronounced climate shifts, such as the transition from the Last Glacial Maximum (LGM) into the Holocene interglacial. The three Oden expeditions to the region’s major fjords, culminating in the GEOEO expedition to Victoria Fjord and C.H. Ostenfeld Glacier in 2024, have produced a wealth of marine geophysical data that constrain the Holocene history of the major outlet glaciers across the region. We combine this unique dataset with a high-resolution 3D thermomechanical ice-sheet model to determine what drove ice loss in North Greenland over millennial timescales and to contextualise the modern response of the ice sheet to anthropogenic climate change.

October 2026

Speaker: Julia de Sigoyer, Université Grenoble Alpes, ISTerre, UFR Phitem

Abstract
Almost the entire 1,500 km length of the North Anatolian Fault (NAF), an intracontinental fault in Turkey, has experienced devas-tating earthquakes over the last century. However, some segments in the Marmara area have remained quiet, representing gaps in seismic activity. The stress in these gaps has accumulated over a longer period than in other segments; these gaps could be the location of future earthquakes. Therefore, it is necessary to investigate the timing of the last earthquake, the recurrence of past earthquakes and the long-term slipping rate of each segment. Our study focused on the Middle Strand of the North Anatolian Fault (MNAF), the segment with the longest seismic gap in the NAF system. In collaboration with 15 international researchers, we adopted a multidisciplinary approach in this area thanks to the presence of Lake Iznik and major archaeological sites. This ap-proach involved integrating archeoseismicity, lacustrine and terrestrial paleoseismology, and U/Th dating of fault mirrors, as well as assessing the region’s seismic hazard.

May 2026

Speaker: Sofie Lindström, Geological Survey of Sweden

Abstract
Carbon capture and storage (CCS) is considered an important tool for reducing atmospheric green-house gas concentrations during the transition to greener energy systems. In a recent government commission, the Geological Survey of Sweden (SGU) identified two potential offshore sites for geolog-ical carbon storage: south of Skåne and southeast of Gotland. The study combined new drilling cam-paigns, borehole analyses, and seismic data to evaluate the potential for safe and long-term storage of captured carbon dioxide beneath the Baltic Sea seafloor. In this seminar, Sofie Lindström will present the main findings of the report, discuss the geological requirements for carbon storage, and outline the challenges and next steps toward developing CCS capacity in Sweden.

February 2026

Speaker: Dr. Allie Smith

Allie completed her PhD Marine Sciences in December 2025 at the University of South Alabama and has served as the NOAA Sea Grant John A. Knauss Marine Policy Fellow for the past year at the Ocean, Great Lakes, and Coastal Program within the Department of the Interior (DOI).

Abstract
Dimethylsulfoniopropionate (DMSP) is an important component of the marine carbon and sulfur cycles, and its degradation products, especially the gas dimethylsulfide (DMS), have important implications for the global climate.There is a lack of understanding of what conditions drive marine bacteria to process sulfur from DMSP through the different degradation pathways. This work shows how changes in bacterial sulfur demand influence the processing of DMSP in two marine bacteria from the Roseobacter clade.