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Wu, Yonghua; Shi, Xuefa; Gong, Xun; Jian, Zhimin; Zou, Jianjun; Liu, Yanguang; Lohmann, Gerrit; Gorbarenko, Sergey A; Tiedemann, Ralf; Lembke-Jene, Lester (2020): Evolution of the upper ocean stratification in the Japan Sea since the last glacial [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.920797

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Published: 2020-07-23 • DOI registered: 2020-08-22

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Abstract:
Paleoceanographic evidence commonly indicates that Last Glacial Maximum surface temperatures in the Japan Sea were comparable to modern conditions, in striking difference to colder neighboring regions. Here, based on a core from the central Japan Sea, our results show similar UK′37- and TEXL86-derived temperatures between 24.7-16.3 ka BP, followed by an abrupt divergence at ~16.3 ka BP and a weakening of divergence after ~ 8.7 ka BP. We attribute this process to a highly stratified glacial upper ocean controlled by the East Asian Summer Monsoon, increasing thermal gradient between surface and subsurface layers during the deglaciation and the intrusion of Tsushima Warm Current since the mid Holocene, respectively. Therefore, we suggest threshold-like changes in upper-ocean temperatures linked to sea-level rise and monsoon dynamics, rather than just sea surface temperatures, play a critical role in shaping the thermal and ventilation history of this NW Pacific marginal sea.
Keyword(s):
Biomarker; Japan Sea; Last Glacial; North Pacific; paleo-oceanography; sea-level; SST; TEX86; UK'37; upper ocean
Supplement to:
Wu, Yonghua; Shi, Xuefa; Gong, Xun; Jian, Zhimin; Zou, Jianjun; Liu, Yanguang; Lohmann, Gerrit; Gorbarenko, Sergey A; Tiedemann, Ralf; Lembke-Jene, Lester (accepted): Evolution of the upper ocean stratification in the Japan Sea since the last glacial. Geophysical Research Letters
Project(s):
Paleoenvironmental Reconstructions from Marine Sediments @ AWI (AWI_Paleo)
Coverage:
Latitude: 40.080000 * Longitude: 133.970000
Event(s):
LV53-19-1 * Latitude: 40.080000 * Longitude: 133.970000 * Elevation: -1174.0 m * Recovery: 600 cm * Method/Device: Piston corer (PC)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
3 datasets

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Datasets listed in this bundled publication

  1. Wu, Y; Shi, X; Gong, X et al. (2020): Biomarker of sediment core LV53-19-1. https://doi.org/10.1594/PANGAEA.920828
  2. Wu, Y; Shi, X; Gong, X et al. (2020): Stable oxygen isotope ratios of Globigerina bulloides of sediment core LV53-19-1. https://doi.org/10.1594/PANGAEA.920824
  3. Wu, Y; Shi, X; Gong, X et al. (2020): Age determination of sediment core LV53-19-1. https://doi.org/10.1594/PANGAEA.920795