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Max, Lars; Lembke-Jene, Lester; Riethdorf, Jan-Rainer; Tiedemann, Ralf; Nürnberg, Dirk; Kühn, Hartmut; Mackensen, Andreas (2014): Radiocarbon ages and stable isotope measurements on sediment cores of the subarctic Pacific and its marginal seas [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.830222, Supplement to: Max, L et al. (2014): Pulses of enhanced North Pacific Intermediate Water ventilation from the Okhotsk Sea and Bering Sea during the last deglaciation. Climate of the Past, 10(2), 419-605, https://doi.org/10.5194/cp-10-591-2014

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Abstract:
Under modern conditions only North Pacific Intermediate Water is formed in the northwest Pacific Ocean. This situation might have changed in the past. Recent studies with general circulation models indicate a switch to deep-water formation in the northwest Pacific during Heinrich Stadial 1 (17.5-15.0 ka) of the last glacial termination. Reconstructions of past ventilation changes based on paleoceanographic proxy records are still insufficient to test whether a deglacial mode of deep-water formation in the North Pacific Ocean existed. Here we present deglacial ventilation records based on radiocarbon-derived ventilation ages in combination with epibenthic stable carbon isotopes from the northwest Pacific including the Okhotsk Sea and Bering Sea, the two potential source regions for past North Pacific ventilation changes. Evidence for most rigorous ventilation of the intermediate-depth North Pacific occurred during Heinrich Stadial 1 and the Younger Dryas, simultaneous to significant reductions in Atlantic Meridional Overturning Circulation. Concurrent changes in d13C and ventilation ages point to the Okhotsk Sea as driver of millennial-scale changes in North Pacific Intermediate Water ventilation during the last deglaciation. Our records additionally indicate that changes in the d13C intermediate-water (700-1750 m water depth) signature and radiocarbon-derived ventilation ages are in antiphase to those of the deep North Pacific Ocean (>2100 m water depth) during the last glacial termination. Thus, intermediate- and deep-water masses of the northwest Pacific have a differing ventilation history during the last deglaciation.
Project(s):
Paleoenvironmental Reconstructions from Marine Sediments @ AWI (AWI_Paleo)
Coverage:
Median Latitude: 55.009805 * Median Longitude: 159.249148 * South-bound Latitude: 49.375667 * West-bound Longitude: 144.132533 * North-bound Latitude: 60.126700 * East-bound Longitude: -179.443500
Date/Time Start: 2002-07-08T00:05:00 * Date/Time End: 2009-09-22T00:06:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
13 datasets

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Datasets listed in this publication series

  1. Max, L; Lembke-Jene, L; Riethdorf, J-R et al. (2014): Stable isotopes measured on on water bottle samples at station LV29-84-3, Sea of Okhotsk. https://doi.org/10.1594/PANGAEA.830248
  2. Max, L; Lembke-Jene, L; Riethdorf, J-R et al. (2014): (Table 2) Radiocarbon ages of planktic and benthic foraminifera in sediment core LV29-114-3 from the northwest Pacific. https://doi.org/10.1594/PANGAEA.830215
  3. Max, L; Lembke-Jene, L; Riethdorf, J-R et al. (2014): (Table 2) Radiocarbon ages of planktic and benthic foraminifera in sediment core SO178-13-6 from the northwest Pacific. https://doi.org/10.1594/PANGAEA.830216
  4. Max, L; Lembke-Jene, L; Riethdorf, J-R et al. (2014): Age model of sediment core SO178-13-6, Sea of Okhotsk. https://doi.org/10.1594/PANGAEA.830246
  5. Max, L; Lembke-Jene, L; Riethdorf, J-R et al. (2014): (Table 1) Stable isotope measurements derived from epibenthic foraminifera Cibicides lobatulus of sediment core SO178-13-6 from the northwest Pacific. https://doi.org/10.1594/PANGAEA.830213
  6. Max, L; Lembke-Jene, L; Riethdorf, J-R et al. (2014): X-ray fluorescence measurements on sediment core SO178-13-6, Sea of Okhotsk. https://doi.org/10.1594/PANGAEA.830247
  7. Max, L; Lembke-Jene, L; Riethdorf, J-R et al. (2014): (Table 2) Radiocarbon ages of planktic and benthic foraminifera in sediment core SO201-2-12 from the northwest Pacific. https://doi.org/10.1594/PANGAEA.830218
  8. Max, L; Lembke-Jene, L; Riethdorf, J-R et al. (2014): Stable isotopes measured on on water bottle samples at station SO201-2-67, Bering Sea. https://doi.org/10.1594/PANGAEA.830249
  9. Max, L; Lembke-Jene, L; Riethdorf, J-R et al. (2014): (Table 2) Radiocarbon ages of planktic and benthic foraminifera in sediment core SO201-2-77 from the northwest Pacific. https://doi.org/10.1594/PANGAEA.830219
  10. Max, L; Lembke-Jene, L; Riethdorf, J-R et al. (2014): (Table 2) Radiocarbon ages of planktic and benthic foraminifera in sediment core SO201-2-85 from the northwest Pacific. https://doi.org/10.1594/PANGAEA.830220
  11. Max, L; Lembke-Jene, L; Riethdorf, J-R et al. (2014): (Table 1) Stable isotope measurements derived from epibenthic foraminifera Cibicides lobatulus of sediment core SO201-2-85 from the northwest Pacific. https://doi.org/10.1594/PANGAEA.830214
  12. Max, L; Lembke-Jene, L; Riethdorf, J-R et al. (2014): (Table 2) Radiocarbon ages of planktic and benthic foraminifera in sediment core SO201-2-101 from the northwest Pacific. https://doi.org/10.1594/PANGAEA.830217
  13. Max, L; Lembke-Jene, L; Riethdorf, J-R et al. (2014): (Table 2) Radiocarbon ages of planktic and benthic foraminifera in sediment core SO202-18-6 from the northwest Pacific. https://doi.org/10.1594/PANGAEA.830221