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  • AWI_Paleo; Biomarker; Japan Sea; Last Glacial; LV53-19-1; North Pacific; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; paleo-oceanography; PC; Piston corer; sea-level; SST; TEX86; UK'37; upper ocean  (1)
  • Acyclic glycerol dialkyl glycerol tetraether; AGE; Alkenone, C37:2; Alkenone, C37:2+C37:3; Alkenone, C37:3; Alkenone, unsaturation index UK'37; AWI_Paleo; Biomarker; Branched and isoprenoid tetraether index; Branched glycerol dialkyl glycerol tetraether, Ia; Branched glycerol dialkyl glycerol tetraether, Ib; Branched glycerol dialkyl glycerol tetraether, Ic; Branched glycerol dialkyl glycerol tetraether, IIa; Branched glycerol dialkyl glycerol tetraether, IIb; Branched glycerol dialkyl glycerol tetraether, IIc; Branched glycerol dialkyl glycerol tetraether, IIIa; Branched glycerol dialkyl glycerol tetraether, IIIb; Branched glycerol dialkyl glycerol tetraether, IIIc; Calculated from TEX86H (Kim et al., 2010); Calculated from TEX86L (Kim et al., 2010); Calculated from UK'37 (Müller et al, 1998); Crenarchaeol; Crenarchaeol regio-isomer; DEPTH, sediment/rock; Dicyclic glycerol dialkyl glycerol tetraether; Isoprenoidal glycerol dialkyl glycerol tetraethers; Japan Sea; Last Glacial; LV53-19-1; Monocyclic glycerol dialkyl glycerol tetraether; North Pacific; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; paleo-oceanography; PC; Piston corer; Ratio; Ring index; sea-level; Sea surface temperature; Sea surface temperature, annual mean; SST; Temperature, difference; Tetraether index of 86 carbon atoms, high-temperature region; Tetraether index of 86 carbon atoms, low-temperature region; TEX86; Tricyclic glycerol dialkyl glycerol tetraether; UK'37; upper ocean  (1)
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Years
  • 1
    Publication Date: 2023-06-27
    Description: 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.
    Keywords: AWI_Paleo; Biomarker; Japan Sea; Last Glacial; LV53-19-1; North Pacific; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; paleo-oceanography; PC; Piston corer; sea-level; SST; TEX86; UK'37; upper ocean
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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  • 2
    Publication Date: 2023-12-18
    Keywords: Acyclic glycerol dialkyl glycerol tetraether; AGE; Alkenone, C37:2; Alkenone, C37:2+C37:3; Alkenone, C37:3; Alkenone, unsaturation index UK'37; AWI_Paleo; Biomarker; Branched and isoprenoid tetraether index; Branched glycerol dialkyl glycerol tetraether, Ia; Branched glycerol dialkyl glycerol tetraether, Ib; Branched glycerol dialkyl glycerol tetraether, Ic; Branched glycerol dialkyl glycerol tetraether, IIa; Branched glycerol dialkyl glycerol tetraether, IIb; Branched glycerol dialkyl glycerol tetraether, IIc; Branched glycerol dialkyl glycerol tetraether, IIIa; Branched glycerol dialkyl glycerol tetraether, IIIb; Branched glycerol dialkyl glycerol tetraether, IIIc; Calculated from TEX86H (Kim et al., 2010); Calculated from TEX86L (Kim et al., 2010); Calculated from UK'37 (Müller et al, 1998); Crenarchaeol; Crenarchaeol regio-isomer; DEPTH, sediment/rock; Dicyclic glycerol dialkyl glycerol tetraether; Isoprenoidal glycerol dialkyl glycerol tetraethers; Japan Sea; Last Glacial; LV53-19-1; Monocyclic glycerol dialkyl glycerol tetraether; North Pacific; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; paleo-oceanography; PC; Piston corer; Ratio; Ring index; sea-level; Sea surface temperature; Sea surface temperature, annual mean; SST; Temperature, difference; Tetraether index of 86 carbon atoms, high-temperature region; Tetraether index of 86 carbon atoms, low-temperature region; TEX86; Tricyclic glycerol dialkyl glycerol tetraether; UK'37; upper ocean
    Type: Dataset
    Format: text/tab-separated-values, 645 data points
    Location Call Number Limitation Availability
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