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(Table S1) Results of Nd measurements on uncleaned, mixed-planktonic foraminiera, bulk sediment leachates and detrital material@en

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DataONE2026-02-06 更新2026-05-19 收录
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Combined seawater radiogenic hafnium (Hf) and neodymium (Nd) isotope compositions were extracted from bulk sediment leachates and foraminifera of Site 1088, ODP Leg 177, 2082 m water depth on the Agulhas Ridge. The new data provide a continuous reconstruction of long and short-term changes in ocean circulation and continental weathering inputs since the Mid-Miocene. Due to its intermediate water depth the sediments of this core sensitively recorded changes in admixture of North Atlantic Deep Water (NADW) to the Antarctic Circumpolar Current (ACC) as a function of the strength of the Atlantic Meridional Overturning Circulation (AMOC). […]

本研究从厄加勒斯海岭(Agulhas Ridge)水深2082米处的大洋钻探计划(Ocean Drilling Program, ODP)第177航次1088站位的块状沉积物浸提物与有孔虫中,获取了海水放射性铪(Hf)与钕(Nd)同位素组成数据。本次新增的同位素数据实现了中新世中期以来海洋环流与大陆风化输入物的长、短期变化的连续重建。由于该岩芯处于中等水深环境,其沉积物能够敏感记录北大西洋深层水(North Atlantic Deep Water, NADW)与南极绕极流(Antarctic Circumpolar Current, ACC)的混合比例随大西洋经向翻转环流(Atlantic Meridional Overturning Circulation, AMOC)强度变化的特征。[…]

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2026-04-22
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