Tarique, Mohd; Rahaman, Waliur; Lathika, N; Thamban, Meloth; Misra, Sambuddha (2023): Foraminifera boron isotope, sea surface temperature, salinity, pH and pCO2 data from the eastern Arabian Sea during the last glacial-interglacial interval [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.962595
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Abstract:
Data presented here are trace-elements and boron isotope composition of planktic foraminifera G. ruber (250-355 μm) along with reconstructed surface ocean temperature, salinity, pH and pCO2 for the past 136 Ka from the south-eastern Arabian Sea. Foraminifera cleaning was carried out using the method adopted from Barker et al. 2003. Boron was purified using the micro-distillation method (Misra et al., 2014a). Trace-element analysis (e.g. Mg/Ca) was carried out using the High-Resolution Inductively Coupled Plasma Mass Spectrometer (HR-ICPMS) (Misra et al., 2014b). Boron isotope analysis was carried out using Thermo Neptune Plus multi-collector inductively coupled plasma mass spectrometer (MC–ICPMS), following the method described in Tarique et al. 2021, and Lloyd et al. 2018. Sea surface temperature (SST) was calculated using the foraminifera Mg/Ca utilizing the method adapted from Gray and Evans 2019. Sea surface salinity (SSS) was calculated using the Mg/Ca derived SST, foraminifera d18O and regional seawater d18O and salinity relationship.
Keyword(s):
Supplement to:
Tarique, Mohd; Rahaman, Waliur; Lathika, N; Prabhat, Priyesh; Thamban, Meloth; Misra, Sambuddha (2023): Enhanced CO 2 Degassing From the Tropical Indian Ocean During Cold Climatic Events of the Last Glacial Cycle. Paleoceanography and Paleoclimatology, 38(12), e2022PA004570, https://doi.org/10.1029/2022PA004570
References:
Barker, S; Greaves, Mervyn; Elderfield, Henry (2003): A study of cleaning procedures used for foraminiferal Mg/Ca paleothermometry. Geochemistry, Geophysics, Geosystems, 4(9), https://doi.org/10.1029/2003GC000559
Gray, William Robert; Evans, David (2019): Nonthermal Influences on Mg/Ca in Planktonic Foraminifera: A Review of Culture Studies and Application to the Last Glacial Maximum. Paleoceanography and Paleoclimatology, 34(3), 306-315, https://doi.org/10.1029/2018PA003517
Lloyd, Nicholas S; Sadekov, Aleksey Y; Misra, Sambuddha (2018): Application of 10 13 ohm Faraday cup current amplifiers for boron isotopic analyses by solution mode and laser ablation multicollector inductively coupled plasma mass spectrometry. Rapid Communications in Mass Spectrometry, 32(1), 9-18, https://doi.org/10.1002/rcm.8009
Misra, Sambuddha; Greaves, Mervyn; Owen, Robert M; Kerr, Joanna; Elmore, Aurora C; Elderfield, Henry (2014): Determination of B/Ca of natural carbonates by HR-ICP-MS. Geochemistry, Geophysics, Geosystems, 15(4), 1617-1628, https://doi.org/10.1002/2013GC005049 (2014b)
Misra, Sambuddha; Owen, Robert M; Kerr, Joanna; Greaves, Mervyn; Elderfield, Henry (2014): Determination of δ11B by HR-ICP-MS from mass limited samples: Application to natural carbonates and water samples. Geochimica et Cosmochimica Acta, 140, 531-552, https://doi.org/10.1016/j.gca.2014.05.047 (2014a)
Tarique, Mohd; Rahaman, Waliur; Fousiya, A A; Lathika, N; Thamban, Meloth; Achyuthan, Hema; Misra, Sambuddha (2021): Surface pH Record (1990-2013) of the Arabian Sea From Boron Isotopes of Lakshadweep Corals - Trend, Variability, and Control. Journal of Geophysical Research: Biogeosciences, 126(7), https://doi.org/10.1029/2020JG006122
Coverage:
Latitude: 9.008889 * Longitude: 72.092222
Date/Time Start: 2005-06-01T12:00:00 * Date/Time End: 2005-06-01T12:00:00
Minimum DEPTH, sediment/rock: 0.045 m * Maximum DEPTH, sediment/rock: 3.270 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Tarique, Mohd | Geocode | |
| 2 | Depth, top/min | Depth top | m | Tarique, Mohd | ||
| 3 | Depth, bottom/max | Depth bot | m | Tarique, Mohd | ||
| 4 | AGE | Age | ka BP | Tarique, Mohd | Geocode | |
| 5 | Magnesium/Calcium ratio | Mg/Ca | mmol/mol | Tarique, Mohd | ||
| 6 | Globigerinoides ruber, δ18O | G. ruber δ18O | ‰ PDB | Tarique, Mohd | ||
| 7 | Sea surface temperature | SST | °C | Tarique, Mohd | Calculated after Gray and Evans, 2019 | Based on Mg/Ca |
| 8 | Paleosalinity | PalSal | Tarique, Mohd | Calculated | PSU, calculated using the Mg/Ca derived SST, foraminifera d18O and regional seawater d18O and salinity relationship | |
| 9 | Logarithmic base dissociation constant | pk (b) | Tarique, Mohd | Multi-collector ICP-MS (MC-ICP-MS), Neptune Plus, Thermo | ||
| 10 | δ11B, calcite | δ11B cal | ‰ SRM | Tarique, Mohd | Multi-collector ICP-MS (MC-ICP-MS), Neptune Plus, Thermo | average |
| 11 | δ11B, calcite, standard deviation | δ11B, cal std dev | ± | Tarique, Mohd | calculated, 2 sigma | |
| 12 | δ11B, borate | δ11B borate | ‰ SRM | Tarique, Mohd | Multi-collector ICP-MS (MC-ICP-MS), Neptune Plus, Thermo | |
| 13 | pH | pH | Tarique, Mohd | Reconstructed | average | |
| 14 | pH, standard error | pH std e | ± | Tarique, Mohd | Reconstructed | |
| 15 | Carbon dioxide, partial pressure minimum | pCO2 min | ppmv | Tarique, Mohd | Reconstructed | lower95 |
| 16 | Carbon dioxide, partial pressure | pCO2 | ppmv | Tarique, Mohd | Reconstructed | |
| 17 | Carbon dioxide, partial pressure maximum | pCO2 max | ppmv | Tarique, Mohd | Reconstructed | upper95 |
| 18 | Δ carbon dioxide, partial pressure | ΔpCO2 | ppmv | Tarique, Mohd | Reconstructed | average |
| 19 | Δ carbon dioxide, partial pressure, maximum | ΔpCO2 max | ppmv | Tarique, Mohd | Reconstructed | upper95 |
| 20 | Δ carbon dioxide, partial pressure, minimum | ΔpCO2 min | ppmv | Tarique, Mohd | Reconstructed | lower95 |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1213 data points