Talks by Sarah Berben, Margit Simon and Liz Bagshaw – Københavns Universitet

Center for Is og Klima > Calendar > 2015 calendar > Talks by Sarah Berben,...

Talks by Sarah Berben, Margit Simon and Liz Bagshaw

10.30 - 11.00 Sarah Berben and Margit Simon: Ice2ice cruise
11.00 - 11.15 Questions and change to next speaker
11.15 - 12.00 Liz Bagshaw: The CryoEgg project


Abstract - ICE2ICE CRUISE:
During July/August 2015 the Ice2ice Team Jansen (Bjerknes Centre for Climate Research, Bergen, Norway) and guest researchers were sailing along the East Greeland Current with the aim to recover marine sediment material that documents rapid past climatic variability during Marine Isotope Stage 3 (27-60 ka) in the western Nordic Seas. One of the main unraveled questions in climate science is: How will the ice sheet and ocean interact in the future in a situation without sea ice cover, and what can we learn in this respect from the past i.e. what was the situation under past abrupt climate events (Dansgaard–Oeschger events/(D-O) stadial to interstadial transition)?

In this presentation we aim to give an overview about the cruise purpose, operations on board, recovered material and present some initial results. Currently, focus is put on two 20 m long piston cores from the shelf outside Scoresbysund and the first results indicate that the selected cores cover ice2ice target intervals: the Eemian interglacial, Marine Isotope Stage 3 and the Holocene. Due to the vicinity of this material to the Greenland ice Sheet the marine sediment cores, especially outside Scoresbysund fjord, can directly be compared to the newly drilled Renland Ice core. Thus, a direct comparison between the two records will deliver important information about the timing between sea-ice cover and related water column changes in the Greenland Seas and their relation to rapid temperature changes over Greenland during D-O events.