Gerber, Lukas; Lippold, Jörg; Repschläger, Janne; Friedrich, Oliver; Testorf, Pierre; Ehnis, Manuel; Süfke, Finn; Blaser, Patrick; Pöppelmeier, Frerk; Jaccard, Samuel L: 14C data of two North Atlantic sediment cores over the last 25,000 years [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993442 (dataset in review)
Abstract:
To examine the influence of the Atlantic Meridional Overturning Circulation (AMOC) on 231Pa/230Th in the North Atlantic from the Last Glacial Maximum (LGM) to the Holocene, we developed new age models for two sediment cores (MSM58-13-2 and MSM58-28-4). These models were based on radiocarbon (14C) ages of mixed planktonic foraminifera species, measured by accelerator mass spectrometry at the University of Bern. Radiocarbon ages were calibrated using the IntCal20 calibration curve with PaleoDataView. Marine reservoir effects were corrected using location- and time-dependent estimates for open-ocean surface waters based on model simulations covering the last 50 kyr. The calibrated and reservoir-corrected ages were then used to construct the age models with Bacon v2.3.9.1, applying 10,000 iterations and modified Student's t-distribution parameters (t.a.=10; t.b.=11).
Related to:
Gerber, Lukas; et al. (submitted): Water-depth-dependent 231Pa/230Th responses in the central North Atlantic since the Last Glacial Maximum.
Project(s):
Earth System Critical Thresholds (EarthCriSys)
Funding:
Horizon Europe (HorizonEU), grant/award no. 101065424: Quantitative reconstruction of past seawater oxygen concentrations (OxyQuant)
Horizon Europe (HorizonEU), grant/award no. 101137601: Climate Tipping Points: Uncertainty-aware quantification of Earth system tipping potential from observations and models and assessment of associated climatic, ecological, and socioeconomic impacts (ClimTip)
Swiss National Science Foundation (SNF), grant/award no. 111588: Quantifying changes in the rate of North Atlantic Deep and Intermediate Water formation associated with abrupt climate changes during the late Quaternary
Coverage:
Median Latitude: 39.492000 * Median Longitude: -33.307750 * South-bound Latitude: 38.583330 * West-bound Longitude: -35.535830 * North-bound Latitude: 40.400670 * East-bound Longitude: -31.079670
Date/Time Start: 2016-09-19T18:13:00 * Date/Time End: 2016-09-24T12:05:00
Minimum DEPTH, sediment/rock: 0.160 m * Maximum DEPTH, sediment/rock: 0.910 m
Event(s):
MSM58_669-2 (MSM58-13-2) * Latitude: 40.400670 * Longitude: -31.079670 * Date/Time: 2016-09-19T18:13:00 * Elevation: -2103.4 m * Penetration: 10 m * Recovery: 8.53 m * Location: North Atlantic Ocean * Campaign: MSM58/1 * Basis: Maria S. Merian * Method/Device: Gravity corer (GC)
MSM58_684-4 (MSM58-28-4) * Latitude: 38.583330 * Longitude: -35.535830 * Date/Time: 2016-09-24T12:05:00 * Elevation: -4112.5 m * Penetration: 10 m * Recovery: 8.87 m * Location: North Atlantic Ocean * Campaign: MSM58/1 * Basis: Maria S. Merian * Method/Device: Gravity corer (GC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Gerber, Lukas | |||
| 2 | Core | Core | Gerber, Lukas | |||
| 3 | Leg Number | Leg | Gerber, Lukas | |||
| 4 | DEPTH, sediment/rock | Depth sed | m | Gerber, Lukas | Geocode – average, mbsf | |
| 5 | Depth, top/min | Depth top | m | Gerber, Lukas | mbsf | |
| 6 | Depth, bottom/max | Depth bot | m | Gerber, Lukas | mbsf | |
| 7 | Laboratory code/label | Lab label | Gerber, Lukas | Age, 14C AMS | ||
| 8 | Age, dated material | Dated material | Gerber, Lukas | Age, 14C AMS | ||
| 9 | Age, dated | Age dated | ka | Gerber, Lukas | Age, 14C AMS | |
| 10 | Age, dated, standard deviation | Age dated std dev | ± | Gerber, Lukas | Age, 14C AMS | |
| 11 | Calendar age, mean | Cal age mean | ka BP | Gerber, Lukas | Age, 14C calibrated, Bacon 2.3.9.1 and IntCal20 | weighted mean |
| 12 | Calendar age, minimum/young | Cal age min | ka BP | Gerber, Lukas | Age, 14C calibrated, Bacon 2.3.9.1 and IntCal20 | 95% |
| 13 | Calendar age, maximum/old | Cal age max | ka BP | Gerber, Lukas | Age, 14C calibrated, Bacon 2.3.9.1 and IntCal20 | 95% |
| 14 | Principal investigator | PI | Gerber, Lukas |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
96 data points