Civel-Mazens, Matthieu; Crosta, Xavier; Cortese, Giuseppe: Radiolarian-based sub-surface temperatures over the last 40 kyrs in core MD12-3396CQ northeast of Kerguelen Island, Southern Ocean [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.931994 (dataset in review)
Abstract:
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).
Related to:
Civel-Mazens, Matthieu; Crosta, Xavier; Cortese, Giuseppe; Michel, Elisabeth; Mazaud, Alain; Ther, Olivier; Ikehara, Minoru; Itaki, Takuya (2021): Impact of the Agulhas Return Current on the oceanography of the Kerguelen Plateau region, Southern Ocean, over the last 40 kyrs. Quaternary Science Reviews, 251, 106711, https://doi.org/10.1016/j.quascirev.2020.106711
Further details:
Gottschalk, Julia; Michel, Elisabeth; Thöle, Lena M; Studer, Anja S; Hasenfratz, Adam P; Schmid, Nicole; Butzin, Martin; Mazaud, Alain; Martínez-García, Alfredo; Szidat, Sönke; Jaccard, Samuel L (2020): Glacial heterogeneity in Southern Ocean carbon storage abated by fast South Indian deglacial carbon release. Nature Communications, 11(1), 6192, https://doi.org/10.1038/s41467-020-20034-1
Coverage:
Latitude: -47.731330 * Longitude: 86.695170
Date/Time Start: 2012-02-13T00:00:00 * Date/Time End: 2012-02-13T00:00:00
Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 8.55 m
Event(s):
MD12-3396Cq (Station 6, MD189-3396) * Latitude: -47.731330 * Longitude: 86.695170 * Date/Time: 2012-02-13T00:00:00 * Elevation: -3615.0 m * Recovery: 8.59 m * Campaign: MD189 (35MF20120125, OISO_21, INDIEN SUD 2) * Basis: Marion Dufresne (1995) * Method/Device: Calypso square corer (CASQ) * Comment: Kasten corer sice 25 cm x 25 cm.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Crosta, Xavier | Geocode | |
| 2 | AGE | Age | ka BP | Crosta, Xavier | Geocode | |
| 3 | Sub-surface temperature, summer | SubT sum | °C | Crosta, Xavier | Transfer function (Imbrie & Kipp, 1971, in Turekian, Yale Univ Press) | 200 m depth, Root Mean Square Error of Prediction of 1.5 °C |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
110 data points