TOC, TOC/TN, δ13Corg and a new chronologic framework of core SG06 from Lake Suigetsu (Japan) since 146 ka

We present new palaeoclimate data from Lake Suigetsu (Japan) core SG06 including total organic carbon (TOC), total nitrogen (TN), TOC/TN ratios, carbon isotope analyses of organic carbon (δ13Corg) and Cryptomeria pollen abundance back to the penultimate glacial period (146 ka). The data is used to reconstruct orbital-scale monsoon dynamics in Japan. The sediments down to a maximum penetration depth of 73m were recovered in summer 2006 using a hydro-pressure thin-walled piston sampler and a floating platform by the Suigetsu 2006 Project Members. A new chronology for the Lake Suigetsu's sediments were developed beyond the well-constrained radiocarbon limit based on (1) tephrochronology, and (2) tephrostratigraphy, and (3) careful alignment of Cryptomeria pollen abundance between Lake Suigetsu and marine core MD01-2421 located in the northern Pacific Ocean.