Wang, Rong; Ren, Jian; Diekmann, Bernhard: Bayesian age-depth model for marine sediment core MD02-2489 (seg 59-278cm), Gulf of Alaska [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.996892 (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 MD02-2489 (seg 59-278cm) from the Gulf of Alaska (54.390°N, 148.920°W; water depth 3640 m). The modeled interval spans approximately 7,831 to 21,117 calibrated years BP. Published radiocarbon determinations were screened for traceability and suitability, grouped into 36 independent dated-depth clusters, and recalibrated with Marine20 using a regional reservoir correction of ΔR = 254 ± 200 yr before Bayesian age-depth modeling with Bacon. 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:
Sarnthein, Michael; Balmer, Sven; Grootes, Pieter Meiert; Mudelsee, Manfred (2014): (Table 2i) Planktic and benthic 14C and 14C reservoir ages of sediment core MD02-2489 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.837488
Sarnthein, Michael; Schneider, Birgit; Grootes, Pieter Meiert (2013): Peak glacial 14C ventilation ages suggest major draw-down of carbon into the abyssal ocean. Climate of the Past, 9(6), 2595-2614, https://doi.org/10.5194/cp-9-2595-2013
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: 54.390700 * Longitude: -148.921300
Date/Time Start: 2002-05-23T00:00:00 * Date/Time End: 2002-05-23T00:00:00
Minimum DEPTH, sediment/rock: 0.590 m * Maximum DEPTH, sediment/rock: 2.780 m
Event(s):
MD02-2489 (MD022489) * Latitude: 54.390700 * Longitude: -148.921300 * Date/Time: 2002-05-23T00:00:00 * Elevation: -3640.0 m * Recovery: 29.8 m * Campaign: MD122 (IMAGES VII - WEPAMA) * Basis: Marion Dufresne (1995) * Method/Device: Giant piston corer (GPC) * Comment: Originally the site and core belonged to the cruise IMAGES VII WEPAMA but was postponed due to tight schedule. The core was then taken in 2002, during transit, preliminary to cruise IMAGES VIII MONA.
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