Radiolarian-based sub-surface temperatures over the last 40 kyrs in core MD12-3396CQ northeast of Kerguelen Island, Southern Ocean

• Main Authors: Civel-Mazens, Matthieu, Crosta, Xavier, Cortese, Giuseppe
• Format: Dataset
• Language: English
• Published: PANGAEA
• Subjects: 35MF20120125; OISO_21; INDIEN SUD 2; AGE; Calypso square corer; CASQ; DEPTH; sediment/rock; last glacial cycle; Marion Dufresne (1995); MD12-3396Cq; MD189; Radiolarian; Southern Ocean; Station 6; MD189-3396; Sub-surface temperature; summer; sub-surface temperatures; Transfer function (Imbrie & Kipp; 1971; in Turekian; Yale Univ Press)
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.931994

Radiolarian census counts were used to quantitatively estimate summer sub-surface temperatures (sub-ST) over the last 40,000 years in core MD12-3396CQ, collected in 2012 on board the R.V. Marion Dufresne northeast of Kerguelen Island, Southern Ocean. The transfer function used to reconstruct summer (Janunary to March) Sub-ST (200 meters deep) is the Imbrie and Kipp method that here uses 207 surface sediment samples, the relative abundances of 81 radiolarian taxa and 5 factors (Civel et al., 2021). This method yields a root mean square error of prediction of ~1.5 °C. The core chronology is detailed in Gottschalk et al. (2020).