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Farmer, Jesse R; Keller, Katherine; Poirier, Robert K; Dwyer, Gary S; Schaller, Morgan F; Coxall, Helen; O'Regan, Matt; Cronin, Thomas M (2023): The oxygen isotopic composition of intermediate-to-deep Arctic seawater since 600 ka [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.958539

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Published: 2023-06-06 • DOI registered: 2023-06-06

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Abstract:
The oxygen isotopic composition of benthic foraminifera (d18Ob) is widely used to date and correlate marine sediment sequences. However, d18Ob has found comparatively little use in the Arctic Ocean due both to uncertainty in Arctic marine sediment chronology and the lack of resemblance between Arctic and open ocean d18Ob records. We address this issue by combining Arctic d18Ob records (Cronin et al., 2019) with benthic ostracode Mg/Ca-BWT reconstructions (Cronin et al., 2017) to create a composite record of the history of seawater d18O in the intermediate-to-deep Arctic Ocean over the last 600 kyr. Seawater d18O and its uncertainty was calculated using PSU Solver (Thirumalai et al., 2016).
Keyword(s):
Arctic Ocean; Benthic foraminiferal stable isotopes; Mg/Ca paleothermometry; ostracodes; oxygen isotope data; Seawater δ18O
Related to:
Farmer, Jesse R; Keller, Katherine; Poirier, Robert K; Dwyer, Gary S; Schaller, Morgan F; Coxall, Helen; O'Regan, Matt; Cronin, Thomas M (2023): A 600 kyr reconstruction of deep Arctic seawater δ 18 O from benthic foraminiferal δ 18 O and ostracode Mg ∕ Ca paleothermometry. Climate of the Past, 19(3), 555-578, https://doi.org/10.5194/cp-19-555-2023
References:
Cronin, Thomas M; Dwyer, Gary S; Caverly, E K; Farmer, Jesse R; DeNinno, L H; Rodriguez-Lazaro, J; Gemery, L (2017): Enhanced Arctic Amplification Began at the Mid-Brunhes Event ~400,000 years ago. Scientific Reports, 7(1), 14475, https://doi.org/10.1038/s41598-017-13821-2
Cronin, Thomas M; Keller, Katherine; Farmer, Jesse R; Schaller, Morgan F; O'Regan, Matt; Poirier, Robert K; Coxall, Helen; Dwyer, Gary S; Bauch, Henning A; Kindstedt, Ingalise G; Jakobsson, Martin; Marzen, Rachel; Santin, Emiliano (2019): Interglacial Paleoclimate in the Arctic. Paleoceanography and Paleoclimatology, 34(12), 1959-1979, https://doi.org/10.1029/2019PA003708
Thirumalai, Kaustubh; Quinn, Terrence Michael; Marino, Gianluca (2016): Constraining past seawater δ18O and temperature records developed from foraminiferal geochemistry. Paleoceanography, 31(10), 1409-1422, https://doi.org/10.1002/2016PA002970
Coverage:
Median Latitude: 79.438889 * Median Longitude: -174.232111 * South-bound Latitude: 75.310000 * West-bound Longitude: 146.561000 * North-bound Latitude: 88.450000 * East-bound Longitude: -154.210000
Date/Time Start: 1992-09-01T00:00:00 * Date/Time End: 2005-09-09T00:00:00
Minimum DEPTH, sediment/rock: 0.0050 m * Maximum DEPTH, sediment/rock: 7.2400 m
Event(s):
HLY0503-18TC * Latitude: 88.450000 * Longitude: 146.561000 * Date/Time: 2005-09-09T00:00:00 * Elevation: -2598.0 m * Location: Lomonosov Ridge, Arctic Ocean * Campaign: HLY0503 (Healy-Oden Trans Arctic Expedition 2005 (HOTRAX05)) * Basis: Healy * Method/Device: Trigger corer (TC)
P192-AR-P30 (P30) * Latitude: 75.310000 * Longitude: -158.050000 * Date/Time: 1992-09-01T00:00:00 * Elevation: -765.0 m * Location: Northwind Ridge * Campaign: Arctic_Summer_West_1992 * Basis: Polar Star * Method/Device: Piston corer (PC)
P192-AR-P40 (P40) * Latitude: 76.260000 * Longitude: -156.550000 * Date/Time: 1992-09-01T00:00:00 * Elevation: -700.0 m * Location: Northwind Ridge * Campaign: Arctic_Summer_West_1992 * Basis: Polar Star * Method/Device: Piston corer (PC)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventFarmer, Jesse R
2Latitude of eventLatitudeFarmer, Jesse R
3Longitude of eventLongitudeFarmer, Jesse R
4Elevation of eventElevationmFarmer, Jesse R
5DEPTH, sediment/rockDepth sedmFarmer, Jesse RGeocode
6AGEAgeka BPFarmer, Jesse RGeocode
7Cassidulina teretis, δ18OC. teretis δ18O‰ PDBFarmer, Jesse RNormalized to Cibicidoides wuellerstorfivs. VPDB
8Cassidulina teretis, δ18OC. teretis δ18O‰ PDBFarmer, Jesse RNormalized to Uvigerinavs. VPDB
9Cibicidoides wuellerstorfi, δ18OC. wuellerstorfi δ18O‰ PDBFarmer, Jesse RNormalized to Cibicidoides wuellerstorfivs. VPDB
10Cibicidoides wuellerstorfi, δ18OC. wuellerstorfi δ18O‰ PDBFarmer, Jesse RNormalized to Uvigerinavs. VPDB
11Cibicidoides wuellerstorfi, δ18O standard deviationC. wuellerstorfi δ18O std dev±Farmer, Jesse Rcalculated, 1 sigma
12Oridorsalis tener, δ18OO. tener δ18O‰ PDBFarmer, Jesse RNormalized to Cibicidoides wuellerstorfivs. VPDB
13Oridorsalis tener, δ18OO. tener δ18O‰ PDBFarmer, Jesse RNormalized to Uvigerinavs. VPDB
14Magnesium/Calcium ratioMg/CaFarmer, Jesse RinterpolatedInterpolated Krithe
15Bottom water temperatureBWT°CFarmer, Jesse RCalculated
16Bottom water temperatureBWT°CFarmer, Jesse RCalculated32 % confidence intervals
17Bottom water temperatureBWT°CFarmer, Jesse RCalculated68 % confidence intervals
18Bottom water temperatureBWT°CFarmer, Jesse RCalculated5 % confidence intervals
19Bottom water temperatureBWT°CFarmer, Jesse RCalculated95 % confidence intervals
20δ18O, seawater, reconstructedδ18Osw‰Farmer, Jesse RCalculated
21δ18O, seawater, reconstructedδ18Osw‰Farmer, Jesse RCalculated32 % confidence intervals
22δ18O, seawater, reconstructedδ18Osw‰Farmer, Jesse RCalculated68 % confidence intervals
23δ18O, seawater, reconstructedδ18Osw‰Farmer, Jesse RCalculated5 % confidence intervals
24δ18O, seawater, reconstructedδ18Osw‰Farmer, Jesse RCalculated95 % confidence intervals
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
4519 data points

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