18 Dec 2019 Antarctic expedition documents cultural heritage
Thawing permafrost may affect the historical remains of the first Swedish Antarctic Expedition, conducted in 1901–1903. Now, the Argentine-Swedish research expedition CHAQ 2020 will collect archaeological data that will, among other things, result in actions that can help preserve this cultural heritage.
Fredrik Dalerum, Docent in Ecology at the Department of Zoology, Stockholm University, leads a research group that participated in this summer’s expedition with the icebreaker Oden to the Ryder Glacier in northwestern Greenland. In addition to Fredrik, the group also consists of Karin Norén, Associate professor, and Johannes Måsviken, PhD student, all at the same department. In this research project, they study how Arctic species and ecosystems are affected by climate change.
Glaciers that terminate where there is water, such as fjords or open coastal waters, lose mass through so-called frontal ablation, which is the common name for the processes of iceberg calving and melt below the water surface. During the recent expedition with the icebreaker Oden to the Ryder Glacier in northern Greenland, researchers investigated frontal ablation with the help of time-lapse photography and LoTUS buoys.
The rising temperature in recent years in the Arctic is causing sea ice and glaciers to melt at an ever-faster rate. The melting of the ice sheet in Greenland increases the inflow of meltwater into Greenland’s fjords and coastal water, with physical and geochemical effects on the fjord systems. This can lead to increased acidification of the Arctic Ocean, which can have a negative impact on the ecosystem and the ocean’s ability to absorb carbon dioxide.
21 Oct 2019 “We will see ground-breaking discoveries”
Christian Stranne is an Assistant Professor at the Department of Geological Sciences, Stockholm University. He was one of the scientists on the Ryder 2019 Expedition to northern Greenland with the icebreaker Oden between August 5 and September 12. The purpose was to study the local environment where the Ryder Glacier meets the ocean and to learn more about outlet glaciers and how they can influence sea levels in a changing climate.