Nd isotope ratios from DSDP Site 607 in the deep North Atlantic over the last 1.5 Myr

Abstract: North Atlantic Deep Water (NADW) represents the major water mass that drives the Atlantic Meridional Ocean Circulation (AMOC), which undergoes substantial reorganization with changing climate. In order to understand its impact on ocean circulation and climate through time, it is necessary to constrain its composition. We report Nd isotope ratios of Fe-Mn oxide ‎encrusted foraminifera from DSDP Site 607 (41.00N 32.96W, 3427m), in the present-day core of NADW. We provide a new North Atlantic paleocirculation record covering the last 1.5 Myr. Other Description: Kim et al. (2020), "Stable interglacials, unstable glacials characterize Pleistocene North Atlantic Deep Water." QSR, in prep.摘要：北大西洋深层水（North Atlantic Deep Water, NADW）是驱动大西洋经向翻转环流（Atlantic Meridional Ocean Circulation, AMOC）的主要水团，其结构会随气候变化发生显著重构。为厘清其随时间推移对海洋环流与气候的影响，亟需限定其组分特征。本文报道了采自现今北大西洋深层水核心区的深海钻探计划（Deep Sea Drilling Project, DSDP）607站位（41.00°N，32.96°W，水深3427米）中铁锰氧化物包被有孔虫（Fe-Mn oxide encrusted foraminifera）的钕同位素比值（Nd isotope ratios），据此建立了一套覆盖过去150万年的北大西洋古环流新记录。 其他说明：Kim等（2020），《更新世北大西洋深层水以稳定间冰期、不稳定冰期为特征》，《第四纪科学评论（Quaternary Science Reviews, QSR）》，待刊。