Stable isotopes and Mg/Ca ratios of planktonic foraminiferal species (G. truncatulinoides, O. universa, G. ruber) from sediment core MD03-2416G@en

Proxy parameter of core MD03-2614G: Isotope-geochemical were performed on the planktonic foraminiferal species Globorotalia truncatulinoides, Orbulina universa and Globigerinoides ruber. The foraminiferal specimens were selected from sediment core MD03-2614G, which was recovered from south of Cape Pasley (south of Australia; 34°43.73S 123°25.70E) from 1070 m water depth during R/V Marion Dufresne Cruise MD131 in 2003 (https://doi.org/10.17600/3200090). Sampling and analytical studies were carried out from ~2 to 538 cm core depth at 2 cm spatial resolution. The records cover the last ~60 kyrs. The stable carbon (δ13C; ‰ VPDB) and oxygen isotope (δ18O, ‰ VPDB) analyses were performed on a Thermo Scientific MAT 253 mass spectrometer with an automated Kiel IV Carbonate Preparation Device. The proxy data provide stratigraphical information and were used to calculate the ice volume-corrected δ18O of seawater (δ18Osw-ivc; ‰ VSMOW). The geochemical analyses were performed on a VARIAN 720–ES Axial ICP-OES, a simultaneous, axial-viewing inductively coupled plasma optical emission spectrometer coupled to a VARIAN SP3 sample preparation system at GEOMAR. G. truncatulinoides were analyzed on a simultaneous, radially viewing ICP-OES (Ciros CCD SOP, Spectro A.I., Univ. Kiel). Sample introduction was performed via an autosampler (Spectra A.I.). Mg/Ca ratios (mmol/mol) were converted into thermocline (TT; °C) and sea surface temperatures (STT; °C). Contaminant phases are added: Al/Ca, Fe/Ca, Mn/Ca in mmol/mol).MD03-2614G岩芯的代用指标参数：本研究针对浮游有孔虫物种截圆辐球虫（Globorotalia truncatulinoides）、环球厚壳球虫（Orbulina universa）及红拟抱球虫（Globigerinoides ruber）开展同位素地球化学分析。所用有孔虫标本采自MD03-2614G沉积岩芯，该岩芯于2003年由“马永·迪弗雷纳号”科考船（R/V Marion Dufresne）MD131航次在澳大利亚南部帕斯利角以南海域（34°43.73′S，123°25.70′E）、水深1070米处获取（DOI：10.17600/3200090）。采样与分析工作覆盖岩芯深度约2~538 cm，空间分辨率为2 cm，记录时长覆盖距今约6万年。 稳定碳同位素（δ¹³C；‰ VPDB，维也纳佩迪贝标准）与氧同位素（δ¹⁸O；‰ VPDB，维也纳佩迪贝标准）分析采用赛默飞世尔科技（Thermo Scientific）MAT 253型质谱仪，并搭配自动化Kiel IV碳酸盐前处理装置。该代用指标数据可提供地层学信息，并被用于计算经冰体积校正的海水氧同位素值（δ¹⁸Osw-ivc；‰ VSMOW，维也纳标准平均海水）。 地球化学分析在GEOMAR开展，采用瓦里安（VARIAN）720–ES轴向型电感耦合等离子体光发射光谱仪（ICP-OES），该设备为同步轴向观测型，搭配VARIAN SP3样品前处理系统。针对截圆辐球虫（G. truncatulinoides）的分析采用同步径向观测型ICP-OES（Ciros CCD SOP，德国基尔大学Spectro A.I.）。样品进样通过自动进样器（Spectra A.I.）完成。 Mg/Ca比值（单位：mmol/mol）可被转换为温跃层温度（TT；℃）与海表温度（STT；℃）。本数据集同时纳入污染相指标：Al/Ca、Fe/Ca、Mn/Ca，单位均为mmol/mol。