Wang, Rong; Ren, Jian; Diekmann, Bernhard: Bayesian age-depth model for marine sediment core EW0408-87JC (r4 245-540cm), Gulf of Alaska [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.996887 (dataset in review), In: Wang, R et al.: Marine20-calibrated radiocarbon chronologies and Bayesian age-depth models for marine sediment cores from the subarctic North Pacific, 0-45 ka BP [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.996868 (dataset in review)
Abstract:
This dataset provides the harmonized age-depth model for marine sediment record EW0408-87JC (r4 245-540cm) from the Gulf of Alaska (58.7695°N, 144.50114°W; water depth 3680 m). The modeled interval spans approximately 11,475 to 16,993 calibrated years BP. Published chronology constraints were screened for traceability and suitability and grouped into 13 independent dated-depth clusters. This record is an explicit legacy chronology and is not a unified Marine20 reconstruction. Published calibrated calendar-age constraints are passed to Bacon with cc = 0 under the legacy treatment; no new Marine20 recalibration of the underlying radiocarbon measurements is claimed. The published table contains the canonical 201-point posterior age product used in the North Pacific chronology framework, including posterior age estimates and chronological uncertainty through the modeled interval. The reconstruction is intended to provide a traceable and methodologically consistent chronology for comparison with other subarctic North Pacific sediment records; the accompanying bundle documents input provenance, exclusions, model settings, diagnostics, and interpretation limits.
Keyword(s):
Source:
Praetorius, Summer K; Mix, Alan C; Walczak, Maureen H; Wolhowe, Matthew D; Addison, Jason A; Prahl, Fredrick G (2015): North Pacific deglacial hypoxic events linked to abrupt ocean warming. Nature, 527(7578), 362-366, https://doi.org/10.1038/nature15753
References:
Heaton, Timothy J; Köhler, Peter; Butzin, Martin; Bard, Edouard; Reimer, Ron W; Austin, William EN; Ramsey, Christopher Bronk; Grootes, Pieter Meiert; Hughen, Konrad A; Kromer, Bernd; Reimer, Paula J; Adkins, Jess F; Burke, Andreas; Cook, Mea S; Olsen, Jesper; Skinner, Luke C (2020): Marine20 - the marine radiocarbon age calibration curve (0-55,000 cal BP). Radiocarbon, 62(4), 779-820, https://doi.org/10.1017/RDC.2020.68
Funding:
Second Institute of Oceanography, Ministry of Natural Resources, grant/award no. JG2510: The Scientific Research Fund of the Second Institute of Oceanography
Coverage:
Latitude: 58.769500 * Longitude: -144.501140
Date/Time Start: 2004-09-19T00:00:00 * Date/Time End: 2004-09-19T00:00:00
Minimum DEPTH, sediment/rock: 2.450 m * Maximum DEPTH, sediment/rock: 5.400 m
Event(s):
EW0408-87JC * Latitude: 58.769500 * Longitude: -144.501140 * Date/Time: 2004-09-19T00:00:00 * Elevation: -3680.0 m * Recovery: 14.63 m * Campaign: EW0408 * Basis: Maurice Ewing * Method/Device: Piston corer (PC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Wang, Rong | Modeled interval label | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Wang, Rong | Geocode – Bacon posterior grid depth | |
| 3 | Calendar age, median | Cal age median | ka BP | Wang, Rong | Age, 14C calibrated, Bayesian model, rbacon | Posterior median calendar age |
| 4 | Calendar age, minimum/young | Cal age min | ka BP | Wang, Rong | Age, 14C calibrated, Bayesian model, rbacon | Lower/younger endpoint of reported 95% posterior interval |
| 5 | Calendar age, maximum/old | Cal age max | ka BP | Wang, Rong | Age, 14C calibrated, Bayesian model, rbacon | Upper/older endpoint of reported 95% posterior interval |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Size:
804 data points