Todorovic, Sara; Dissard, Delphine; Linsley, Braddock K; Kuhnert, Henning; Wu, Henry C: Paired d18O and Sr/Ca, and reconstructed d18Osw records of Porites sp. from Rotuma (RO2) and Tonga (TNI2), Southwest Pacific [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.965772 (dataset in review)
Abstract:
Two massive living Porites sp. coral colonies from Southwest Pacific were cored: from Rotuma, in 1998 (RO2), and from Tonga in 2004 (TNI2). TNI2 coral has previously published d18O time series (Linsley et al. 2008). Coral skeletal material was micro-sampled with a 0.5 mm drill bit, using a handheld Proxxon drill, in continuous 1 mm increments along the maximum growth axis to obtain close to monthly resolution. Samples were analyzed for d18O (RO2) and Sr/Ca (RO2, TNI2) allowing the reconstruction of d18Osw from both corals following the method of Ren et al. (2002). The trace element analysis of TNI2 was completed in every other mm resolution to match the resolution of Linsley et al. (2008). RO2 d18O was measured from individual skeletal powders at the MARUM, Germany, using a Thermo-Finnigan MAT 251 and MAT 253 gas isotope ratio mass spectrometer with Kiel I and Kiel IV automated carbonate preparation devices. Trace elements were measured at the Leibniz Centre for Tropical Marine Research, Germany on the Analytik Jena PlasmaQuant MS Elite Inductively Coupled Plasma Mass Spectrometer. Data was interpolated into monthly resolution using the ARAND software Ager and Timer (Howell et al., 2006), and is dating back to 1821 in Rotuma, and 1848 in Tonga. The coral proxy data of this dataset provides sea surface temperature and salinity reconstructions from the data poor regions of West Pacific Warm Pool and South Pacific Convergence Zone extending the sparse instrumental and gridded data products available.
Keyword(s):
Supplement to:
Todorovic, Sara; Dissard, Delphine; Linsley, Braddock K; Kuhnert, Henning; Wu, Henry C (submitted): West Pacific Warm Pool warming and salinity front expansion since 1821 reconstructed from paired coral d18O, Sr/Ca, and reconstructed d18Osw. Paleoceanography and Paleoclimatology
References:
Howell, P; Pisias, Nicklas G; Ballance, J; Baughman, J; Ochs, L (2006): ARAND Time-Series Analysis Software. Brown University, Providence RI, https://github.com/jesstierney/arand
Linsley, Braddock K; Zhang, Peipei; Kaplan, Alexey; Howe, Stephen S; Wellington, G M (2008): Interdecadal-decadal climate variability from multicoral oxygen isotope records in the South Pacific Convergence Zone region since 1650 A.D. Paleoceanography, 23(2), PA2219, https://doi.org/10.1029/2007PA001539
Ren, Lei; Linsley, Braddock K; Wellington, G M; Schrag, Daniel P; Hoegh-Guldberg, Ove (2003): Deconvolving the d18O seawater component from subseasonal coral d18O and Sr/Ca at Rarotonga in the southwestern subtropical Pacific for the period 1726 to 1997. Geochimica et Cosmochimica Acta, 67(9), 1609-1621, https://doi.org/10.1016/S0016-7037(02)00917-1
Project(s):
Funding:
Bundesministerium für Bildung und Forschung, Bonn (BMBF), grant/award no. 57429626: Make Our Planet Great Again-Ocean acidification crisis and global warming observations from tropical corals
Coverage:
Median Latitude: -16.383056 * Median Longitude: -178.854167 * South-bound Latitude: -20.278056 * West-bound Longitude: 177.106944 * North-bound Latitude: -12.488056 * East-bound Longitude: -174.815278
Date/Time Start: 1998-10-27T00:00:00 * Date/Time End: 2004-11-22T00:00:00
Minimum Elevation: -11.0 m * Maximum Elevation: -3.5 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Todorovic, Sara | |||
| 2 | AGE | Age | ka BP | Todorovic, Sara | Calculated | Geocode |
| 3 | Age | Age | a AD/CE | Todorovic, Sara | Calculated | month calculated by 1/12, monthly interpolation with ARAND software Ager and Timer (Howell et al., 2006), TNI2 age from Linsley et al. 2008 |
| 4 | Date | Date | Todorovic, Sara | Calculated | ||
| 5 | Porites sp., Strontium/Calcium ratio | Porites sp. Sr/Ca | mmol/mol | Todorovic, Sara | Inductively coupled plasma mass spectrometer (ICPMS), Analytik Jena, Plasma Quant MS Elite | |
| 6 | Porites sp., δ18O | Porites sp. δ18O | ‰ PDB | Todorovic, Sara | Mass spectrometer, Finnigan, MAT 251; Mass spectrometer, Finnigan, MAT 253 | |
| 7 | δ18O, seawater, reconstructed | δ18Osw | ‰ PDB | Todorovic, Sara | Calculated | the temperature component provided by the Sr/Ca-SST calibration is removed from the d18O values |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 4 (ProcLevel4)
Size:
20035 data points
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