Came, Rosemarie E; Oppo, Delia W; Curry, William B; Lynch-Stieglitz, Jean (2014): (Table 1) Age determination of sediment cores OCE205-2-100GGGC and KNR166-2-31 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.832435, Supplement to: Came, RE et al. (2008): Deglacial variability in the surface return flow of the Atlantic meridional overturning circulation. Paleoceanography, 23(1), PA1217, https://doi.org/10.1029/2007PA001450
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Abstract:
Benthic foraminiferal Cd/Ca from a Florida Current sediment core documents the history of the northward penetration of southern source waters within the surface return flow of the Atlantic meridional overturning circulation (AMOC). Cd seawater estimates (CdW) indicate that intermediate-depth southern source waters crossed the equator and contributed to the Florida Current during the Bølling-Allerød warm period of the last deglaciation, consistent with evidence of only a modest AMOC reduction compared to today. The CdW estimates also provide the first paleoceanographic evidence of a reduction in the influence of intermediate-depth southern source waters within the Florida Current during the Younger Dryas, a deglacial cold event characterized by a weak North Atlantic AMOC. Our results reveal a close correspondence between the northward penetration of intermediate-depth southern source waters and the influence of North Atlantic Deep Water, suggesting a possible link between intermediate-depth southern source waters and the strength of the Atlantic AMOC.
Further details:
Hughen, Konrad A; Southon, John R; Lehman, Scott J; Bertrand, Chanda J H; Turnbull, J (2006): Marine-derived 14C calibration and activity record for the past 50,000 years updated from the Cariaco Basin. Quaternary Science Reviews, 25(23-24), 3216-3227, https://doi.org/10.1016/j.quascirev.2006.03.014
Stuiver, Minze; Reimer, Paula J (1993): Extended 14C data base and revised CALIB 3.0 14C age calibration program. Radiocarbon, 35(1), 215-230, https://doi.org/10.1017/S0033822200013904
Project(s):
Coverage:
Median Latitude: 25.143170 * Median Longitude: -80.664580 * South-bound Latitude: 24.219670 * West-bound Longitude: -83.295830 * North-bound Latitude: 26.066670 * East-bound Longitude: -78.033330
Date/Time Start: 2002-01-11T00:00:00 * Date/Time End: 2002-01-11T00:00:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 1.600 m
Event(s):
KNR166-2-31 (KNR166-2-31JPC) * Latitude: 24.219670 * Longitude: -83.295830 * Date/Time: 2002-01-11T00:00:00 * Elevation: -751.0 m * Recovery: 7.51 m * Location: Florida Strait * Campaign: KNR166-2 (KN166-2) * Basis: Knorr * Method/Device: Piston corer (PC)
Comment:
Accelerator mass spectrometer (AMS) radiocarbon dates were converted to calendar age using the online calibration program Calib 5.02 (Stuiver and Reimer, 1993), the Marine04 calibration data set (Hughen et al., 2004), and a reservoir correction of 400 years.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 3 | Age, dated material | Dated material | Came, Rosemarie E | |||
| 4 | Laboratory code/label | Lab label | Came, Rosemarie E | NOSAMS is National Ocean Sciences Accelerator Mass Spectrometer Facility | ||
| 5 | Age, dated | Age dated | ka | Came, Rosemarie E | Age, 14C AMS | |
| 6 | Age, dated standard deviation | Age dated std dev | ± | Came, Rosemarie E | Age, 14C AMS | |
| 7 | Calendar age, minimum/young | Cal age min | ka BP | Came, Rosemarie E | Age, 14C calibrated | 1 sigma |
| 8 | Calendar age, maximum/old | Cal age max | ka BP | Came, Rosemarie E | Age, 14C calibrated | 1 sigma |
| 9 | Calendar age | Cal age | ka BP | Came, Rosemarie E | Age, 14C calibrated | |
| 10 | Calendar age, minimum/young | Cal age min | ka BP | Came, Rosemarie E | Age, 14C calibrated | 2 sigma |
| 11 | Calendar age, maximum/old | Cal age max | ka BP | Came, Rosemarie E | Age, 14C calibrated | 2 sigma |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
209 data points