Nakatsuka, Takeshi; Watanabe, Kazuki; Handa, Nobuhiko; Matsumoto, Eiji; Wada, Eitaro (1995): Stable carbon and nitrogen isotopic ratios of cores from the Bering Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.763162, Supplement to: Nakatsuka, T et al. (1995): Glacial to interglacial surface nutrient variations of Bering Deep Basins recorded by d13C and d15N of sedimentary organic matter. Paleoceanography, 10(6), 1047-1061, https://doi.org/10.1029/95PA02644
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Abstract:
Stable carbon and nitrogen isotopic ratios (d13C and d15N) of organic matter were measured in three sediment cores from deep basins of the Bering Sea to investigate past changes in surface nutrient conditions. For surface water reconstructions, hemipelagic layers in the cores were distinguished from turbidite layers (on the basis of their sedimentary structures and 14C ages) and analyzed for isotopic studies. Although d13C profiles may have been affected by diagenesis, both d15N and d13C values showed common positive anomalies during the last deglaciation. We explain these anomalies as reflecting suppressed vertical mixing and low nutrient concentrations in surface waters caused by injection of meltwater from alpine glaciers around the Bering Sea.
Coverage:
Median Latitude: 54.555007 * Median Longitude: -179.382460 * South-bound Latitude: 53.161700 * West-bound Longitude: 177.323300 * North-bound Latitude: 57.048300 * East-bound Longitude: -176.043300
Event(s):
DR-13 * Latitude: 53.161700 * Longitude: 177.323300 * Elevation: -3930.0 m * Recovery: 8.84 m * Location: Bering Sea * Method/Device: Piston corer (PC) * Comment: Cruise of R/V Hakuho-Maru
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets
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Datasets listed in this publication series
- Nakatsuka, T; Watanabe, K; Handa, N et al. (1995): (Table A1) Age determination of cores St-11, DR-16 and DR-13 from the Bering Sea. https://doi.org/10.1594/PANGAEA.763136
- Nakatsuka, T; Watanabe, K; Handa, N et al. (1995): (Table A2) Organic carbon and nitrogen contents of cores St-11, DR-16 and DR-13 from the Bering Sea. https://doi.org/10.1594/PANGAEA.763160
- Nakatsuka, T; Watanabe, K; Handa, N et al. (1995): (Table A3) Carbon and nitrogen isotope measurements of cores St-11, DR-16 and DR-13 from the Bering Sea. https://doi.org/10.1594/PANGAEA.763161