Govil, Pawan; Naidu, Pothuri Divakar (2024): Planktonic d18O and Mg/Ca ratios and sea seawater temperature reconstructions of sediment core SK218-1 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.965924
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Abstract:
Radiocarbon ages measured on planktonic foraminifera Globigerinoides ruber alba and stable oxygen isotope and Mg/Ca ratios measured on the same species. For Mg/Ca and d18O measurements shells from the 250-350 micrometer size fraction were used. Mg/Ca measurements are based on 30-40 shells that were cleaned using an oxidative cleaning step. Seawater temperature estimates were calculated using the T = ln(Mg/Ca/0.09)/0.38 following 10.1029/2001GC000200.
Keyword(s):
Related to:
Govil, Pawan; Naidu, Pothuri Divakar (2011): Variations of Indian monsoon precipitation during the last 32kyr reflected in the surface hydrography of the Western Bay of Bengal. Quaternary Science Reviews, 30(27-28), 3871-3879, https://doi.org/10.1016/j.quascirev.2011.10.004
Naidu, Pothuri Divakar; Govil, Pawan (2010): New evidence on the sequence of deglacial warming in the tropical Indian Ocean. Journal of Quaternary Science, 25(7), 1138-1143, https://doi.org/10.1002/jqs.1392
Coverage:
Latitude: 14.030000 * Longitude: 82.000000
Minimum DEPTH, sediment/rock: 0.68 m * Maximum DEPTH, sediment/rock: 5.46 m
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Govil, Pawan | Geocode – merged | |
| 2 | AGE | Age | ka BP | Govil, Pawan | Geocode | |
| 3 | Globigerinoides ruber white, Magnesium/Calcium ratio | G. ruber w Mg/Ca | mmol/mol | Govil, Pawan | ICP-MS, Thermo Finnigan, Element 2 | |
| 4 | Sea surface temperature, annual mean | SST (1-12) | °C | Govil, Pawan | Calculated from Mg/Ca ratios (Dekens et al. 2002) | Mg/Ca = 0.38 exp (0.09*T) |
| 5 | Globigerinoides ruber white, δ18O | G. ruber w δ18O | ‰ PDB | Govil, Pawan | Mass spectrometer Finnigan MAT 252 | vs. VPDB |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
156 data points