Sediment core LV53-27 (41° 54′ N, 132° 33′ E) was retrieved in the northwestern Sea of Japan (Pervenets Seamount) at 1698 m depth during a joint Russian-Chinese expedition LV53 on RV "Akademik M.A. Lavrentyev" in 2010-11-10T23:39:00. Sediment core LV53-27 recovered about 120 kyr according to age model (Gorbarenko et al., 2023). 160 sediment samples, which were selected at an interval of 4 cm, were studied by the method of spore-pollen analysis. Total organic carbon content (TOC) measured by colorimetry using an AN-7529 analyser.
Further funding: Evolution of the environment, climate and productivity of the Eastern Arctic in the Pleistocene and Holocene, Award: 22-17-00118.