Jena, Partha Sarathi; Chiessi, Cristiano Mazur; Beese, Ines; Butzin, Martin; Dias, Bruna Borba; Campos, Marília C; Lohmann, Gerrit; Mulitza, Stefan: Radiocarbon benthic-planktic (B-P) ventilation age data of sediment core GeoB16206-1, western equatorial Atlantic [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993832 (dataset in review)
Abstract:
Here we present radiocarbon ventilation ages from a western equatorial Atlantic sediment core with a remarkably high sedimentation rate to reconstruct AMOC variability during the last deglaciation, with a focus on Heinrich Stadial 1 (HS1; 17.8-14.8 ka). Notably, within an overall weakened AMOC condition during HS1, our record shows two centennial-scale AMOC intensifications: one from 16.5 to 15.8 ka and another at ~15.4 ka. These centennial-scale episodes of intensified AMOC briefly revitalized Atlantic interhemispheric heat transport during HS1, resulting in decreased precipitation over northeastern Brazil and short-lived but intense changes in climate elsewhere. These episodes of AMOC intensification likely transported substantial volumes of CO2-rich water from the mid-depth Atlantic to the Southern Ocean, where the CO2 was rapidly outgassed to the atmosphere.
Keyword(s):
Related to:
Jena, Partha Sarathi; Chiessi, Cristiano Mazur; Beese, Ines; Butzin, Martin; Dias, Bruna Borba; Campos, Marília C; Lohmann, Gerrit; Mulitza, Stefan (submitted): Centennial-scale intensifications of the Atlantic Meridional Overturning Circulation during Heinrich Stadial 1. Nature Communications
Project(s):
Coverage:
Latitude: -1.579167 * Longitude: -43.023667
Date/Time Start: 2012-02-24T02:00:00 * Date/Time End: 2012-02-24T02:00:00
Minimum DEPTH, sediment/rock: 0.06 m * Maximum DEPTH, sediment/rock: 7.05 m
Event(s):
GeoB16206-1 (057-1) * Latitude: -1.579167 * Longitude: -43.023667 * Date/Time: 2012-02-24T02:00:00 * Elevation: -1367.0 m * Recovery: 8.12 m * Location: Continental Slope Northeast Brazil * Campaign: MSM20/3 (AMADEUS) * Basis: Maria S. Merian * Method/Device: Gravity corer (Kiel type) (SL) * Comment: Geology, 812 cm
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Number | No | Jena, Partha Sarathi | Sl. No | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Jena, Partha Sarathi | Geocode | |
| 3 | Age, dated | Age dated | ka | Jena, Partha Sarathi | Age, 14C | |
| 4 | Age, dated, standard deviation | Age dated std dev | ± | Jena, Partha Sarathi | 1 Sigma | |
| 5 | Age, dated material | Dated material | Jena, Partha Sarathi | |||
| 6 | Laboratory code/label | Lab label | Jena, Partha Sarathi | Planktic | ||
| 7 | Age, dated | Age dated | ka | Jena, Partha Sarathi | Age, 14C | |
| 8 | Age, dated, standard deviation | Age dated std dev | ± | Jena, Partha Sarathi | 1 Sigma | |
| 9 | Age, dated material | Dated material | Jena, Partha Sarathi | |||
| 10 | Laboratory code/label | Lab label | Jena, Partha Sarathi | Benthic | ||
| 11 | Age, dated | Age dated | ka | Jena, Partha Sarathi | Age, 14C | |
| 12 | Age, dated, standard deviation | Age dated std dev | ± | Jena, Partha Sarathi | 1 Sigma | |
| 13 | Age, dated | Age dated | ka | Jena, Partha Sarathi | Estimated | Ventilation age, B-P, #=Outliers |
| 14 | Age, dated, standard deviation | Age dated std dev | ± | Jena, Partha Sarathi | 1 Sigma, #=Outliers |
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:
559 data points