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Kiefer, Thorsten; McCave, I Nick; Elderfield, Henry (2006): Stable isotopes and sea surface temperature on planktic foraminifera of sediment core WIND 28K [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.610271, Supplement to: Kiefer, T et al. (2006): Antarctic control on tropical Indian Ocean sea surface temperature and hydrography. Geophysical Research Letters, 33(24), L24612, https://doi.org/10.1029/2006GL027097

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Abstract:
We reconstructed the surface hydrography of the South Equatorial Current in the western Indian Ocean for the last 65,000 years using a marine sediment core record. Results show that tropical Indian Ocean temperatures resemble temperatures from Antarctic ice cores with warm and cold fluctuations synchronous with the Antarctic Cold Reversal and the Antarctic warm events A1–A4. The most likely thermal link involves Subantarctic Mode Water (SAMW) which forms north of the subpolar frontal zone and spreads northward into the Indian Ocean. This subsurface water mass is the prime suspect because of a stronger temperature response in the thermocline (recorded by the foraminifer N. dutertrei) than in surface water (G. ruber).
Coverage:
Latitude: -10.153833 * Longitude: 51.012819
Date/Time Start: 2001-07-30T15:00:00 * Date/Time End: 2001-07-30T15:00:00
Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 3.000 m
Event(s):
WIND-28K * Latitude: -10.153833 * Longitude: 51.012819 * Date/Time: 2001-07-30T15:00:00 * Elevation: -4157.0 m * Recovery: 6.15 m * Location: SW Indian Ocean * Campaign: CD129 (WIND) * Basis: Charles Darwin * Method/Device: Kasten corer (KAL)
Comment:
all measurements were carried out on the 300-355 ym fraction
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DEPTH, sediment/rockDepth sedmGeocode
2AGEAgeka BPGeocode
3Cibicidoides wuellerstorfi, δ18OC. wuellerstorfi δ18O‰ PDBKiefer, ThorstenIsotope ratio mass spectrometry
4Globigerinoides ruber white, δ18OG. ruber w δ18O‰ PDBKiefer, ThorstenIsotope ratio mass spectrometry
5Globigerinoides ruber white, δ18OG. ruber w δ18O‰ PDBKiefer, ThorstenIsotope ratio mass spectrometryice volume corrected
6Globigerinoides ruber white, δ13CG. ruber w δ13C‰ PDBKiefer, ThorstenIsotope ratio mass spectrometry
7Neogloboquadrina dutertrei, δ18ON. dutertrei δ18O‰ PDBKiefer, ThorstenIsotope ratio mass spectrometry
8Neogloboquadrina dutertrei, δ18ON. dutertrei δ18O‰ PDBKiefer, ThorstenIsotope ratio mass spectrometryice volume corrected
9Neogloboquadrina dutertrei, δ13CN. dutertrei δ13C‰ PDBKiefer, ThorstenIsotope ratio mass spectrometry
10Globigerinoides ruber white, Magnesium/Calcium ratioG. ruber w Mg/Cammol/molKiefer, ThorstenGraphite furnace atomic absorption spectrometer (GF-AAS)
11Neogloboquadrina dutertrei, Magnesium/Calcium ratioN. dutertrei Mg/Cammol/molKiefer, ThorstenGraphite furnace atomic absorption spectrometer (GF-AAS)
12Sea surface temperature, annual meanSST (1-12)°CKiefer, ThorstenCalculatedbased on Globigerinoides ruber
13Thermocline water temperatureTWT°CKiefer, ThorstenCalculated from Mg/Ca ratios (Anand et al., 2003)based on Neogloboquadrina dutertrei
14Foraminifera, planktic, mass per shellForam plankt massµgKiefer, ThorstenGlobigerinoides ruber
15Foraminifera, planktic, mass per shellForam plankt massµgKiefer, ThorstenNeogloboquadrina dutertrei
Size:
1132 data points

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