[M-GI28] Drilling Earth Science

[MGI28-05] Exploring Arctic climate history through marine sediment cores drilled during IODP Expedition 403

★Invited Papers

*Mutusmi Iizuka¹, Renata Giulia Lucchi², Kristen St. John³, Thomas A. Ronge⁴ (1.The National Institute of Advanced Industrial Science and Technology, 2.National Institute of Oceanography and Applied Geophysics, 3.James Madison University, 4.International Ocean Discovery Program Texas A&M University)

Keywords:International Ocean Discovery Program, marine sediment core, Fram Strait, Arctic

The IODP Expedition 403, as the final research cruise conducted by the RV JOIDES Resolution under the IODP framework, drilled marine sediment cores in the eastern Fram Strait, offshore Svalbard. The Fram Strait serves as a key gateway for ocean currents connecting the North Atlantic and the Arctic Ocean. Variations in the warm current flowing northward along the Svalbard margin (the West Spitsbergen Current) have significant implications for the melting of Arctic ice sheets and sea ice and potentially influence the Atlantic Meridional Overturning Circulation (AMOC). As such, this region plays a crucial role in both regional and global climate change.
During the expedition, sediment cores were successfully collected from seven sites, providing essential samples for reconstructing past climate variability in the Arctic. This presentation will provide an overview of these sediment cores and outline my future research plans to reconstruct Arctic climate change using organic geochemical methods.