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  • 1
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    Sable oxygen isotope and Mg/Ca ratios of planktonic foraminifera from KX97322-4 (KX22-4) (2021)
    PANGAEA
    Details
    Publication Date: 2023-03-30
    Description: We obtained Core KX97322-4 (00°01.73′S, 159°14.66′E, 2362 m) from the Ontong Java Plateau in the central WPWP using a giant piston corer on the Science-1 vessel during the Warm Pool Subject Cruise executed in 2008. The sedimentation rate is 0.39–4.95 cm kyr^-1^, with an average time resolution of 0.57 kyr cm^-1^. The age model was established based on downcore stable oxygen isotope measurements on the benthic foraminifer Cibicidoides wuellerstorfi (〉500 μm) correlated with the reference benthic stack LR04 using Match 2.3.1 software, combined with five accelerator mass spectrometry radiocarbon (^14^C) dates on the planktonic foraminifer Trilobatus sacculifer (with a sac) (350–500 μm) measured at the National Ocean Sciences Accelerator Mass Spectrometry facility, Woods Hole Oceanographic Institution, USA. We measured stable oxygen isotope and Mg/Ca ratio of planktic foraminifera Globigerinoides ruber and Neogloboquadrina dutertrei at the Institute of Oceanology, Chinese Academy of Sciences (IOCAS), using GV IsoPrime mass spectrometer and inductively coupled plasma-optical emission spectrometry (ICP-OES, Thermo-Fisher, iCAP6300 radial) to rebuild paleo-temperature and salinity of the central western Pacific warm pool during the last 360, 000 years, aiming to probe paleo-ENSO progress in late Quaternary.
    Keywords: AGE; DEPTH, sediment/rock; Foraminifera; foraminifera oxygen isotopes. Late Quaternary; Giant piston corer; Globigerinoides ruber, Magnesium/Calcium ratio; Globigerinoides ruber, δ18O; GPC; KX22-4; KX97322-4; Mg/Ca paleothermometry; Neogloboquadrina dutertrei, Magnesium/Calcium ratio; Neogloboquadrina dutertrei, δ18O; Sea sub-surface salinity; Sea sub-surface temperature; Sea surface salinity; Sea surface salinity, difference; Sea surface temperature; Temperature, difference; West Pacific Warm Pool; δ18O, seawater, reconstructed; δ18O, seawater, reconstructed, difference; δ18O, seawater, reconstructed, residual
    Type: Dataset
    Format: text/tab-separated-values, 9271 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Mg/Ca ratios and stable oxygen isotope of multiple planktonic foraminifera from KX97322-4 (KX22-4) over the last 30,000 years (2022)
    PANGAEA
    Details
    Publication Date: 2023-12-14
    Description: Using a large piston corer on the Science-1 vessel during the Warm Pool Subject Cruise in 2008, we recovered Core KX97322-4 (00°01.73′S, 159°14.66′E, 2362 m) from the Ontong-Java Plateau in the central western Pacific warm pool. The sedimentation rate is 0.39-4.95 cm/kyr, with an average time resolution of 0.57 kyr/cm. The age model was established based on downcore stable oxygen isotope measurements on the benthic foraminifer Cibicidoides wuellerstorfi (〉500 μm) correlated with the reference benthic stack LR04 using Match 2.3.1 software, combined with seven accelerator mass spectrometry radiocarbon (14C) data on the planktonic foraminifer Trilobatus sacculifer (with a sac) (350–500 μm), five data published before and another two new data was performed at NOSMAS and Beta Analytic Inc., USA. We measured stable oxygen isotope and Mg/Ca ratio of planktic foraminifera Globigerinoides ruber, T.sacculifer, Neogloboquadrina dutertrei, Globigerinella siphonifera, Globorotalia crassaformis and Globorotalia truncatulinoides dextral at the Institute of Oceanology, Chinese Academy of Sciences (IOCAS), using GV IsoPrime mass spectrometer and inductively coupled plasma-optical emission spectrometry (ICP-OES, Thermo-Fisher, iCAP6300 radial) to rebuild paleo-temperature and salinity of the central western Pacific warm pool during the last 30,000 years, aiming to probe paleo-ENSO progress during the last deglaciation.
    Keywords: AGE; Calculated; Giant piston corer; Globigerinella siphonifera, Magnesium/Calcium ratio; Globigerinoides ruber, Magnesium/Calcium ratio; Globigerinoides ruber, δ18O; Globorotalia crassaformis, Magnesium/Calcium ratio; Globorotalia truncatulinoides dextral, Magnesium/Calcium ratio; GPC; KX22-4; KX97322-4; last deglaciation; Mg/Ca-based paleotemperatures; Neogloboquadrina dutertrei, Magnesium/Calcium ratio; Ocean heat content; oxygen isotope; Planktonic foraminifera; see description in data abstract; Temperature, water; Trilobatus sacculifer, Magnesium/Calcium ratio; Trilobatus sacculifer, δ18O; Western Pacific Warm Pool
    Type: Dataset
    Format: text/tab-separated-values, 616 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Precession cycles of the El Niño/Southern Oscillation-like system controlled by Pacific upper-ocean stratification (2021)
    In:  EPIC3Communications Earth and Environment, ISSN: 2662-4435
    Details
    Publication Date: 2022-02-15
    Description: Modern observations have presented linkages between subsurface waters of the western Pacific warm pool and both El Niño/Southern Oscillation-related and extratropic-controlled upper-ocean stratification on interannual timescales. Moreover, studies have showed that such controls may operate on orbital cycles, although the details remain unclear. Here we present paired temperature and salinity reconstructions for the surface and thermocline waters in the central western Pacific warm pool over the past 360,000 years, as well as transit modeling results from an Earth system model. Our results show that variations in subsurface temperature and salinity in the western Pacific warm pool have consistently correlated with the shallow meridional overturning cell over the past four glacial-interglacial cycles, and they vary on eccentricity and precession cycles. The shallow meridional over- turning cell regulates subsurface waters of the western Pacific warm pool by changing subtropical surface water density and thus equatorial upper-ocean stratification, acting as an El Niño/Southern Oscillation-like process in the precession band. Therefore, the western Pacific warm pool is critical in connecting the austral shallow meridional overturning cell to the Earth’s climate system on orbital timescales.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
    Format: application/pdf
    Location Call Number Limitation Availability
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    PAPER (OA)
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