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Wang, Luejiang (1994): Sea-surface reconstructions of the western Pacific Ocean during the last 5.3 million years. PANGAEA, https://doi.org/10.1594/PANGAEA.702146, Supplement to: Wang, L (1994): Sea surface temperature history of the low latitude western Pacific during the last 5.3 million years. Palaeogeography, Palaeoclimatology, Palaeoecology, 108(3-4), 379-436, https://doi.org/10.1016/0031-0182(94)90244-5

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Abstract:
The late Neogene was a time of cryosphere development in the northern hemisphere. The present study was carried out to estimate the sea surface temperature (SST) change during this period based on the quantitative planktonic foraminiferal data of 8 DSDP sites in the western Pacific. Target factor analysis has been applied to the conventional transfer function approach to overcome the no-analog conditions caused by evolutionary faunal changes. By applying this technique through a combination of time-slice and time-series studies, the SST history of the last 5.3 Ma has been reconstructed for the low latitude western Pacific. Although the present data set is close to the statistical limits of factor analysis, the clear presence of sensible variations in individual SST time-series suggests the feasibility and reliability of this method in paleoceanographic studies. The estimated SST curves display the general trend of the temperature fluctuations and reveal three major cool periods in the late Neogene, i.e. the early Pliocene (4.7 3.5 Ma), the late Pliocene (3.1-2.7 Ma), and the latest Pliocene to early Pleistocene (2.2-1.0 Ma). Cool events are reflected in the increase of seasonality and meridional SST gradient in the subtropical area. The latest Pliocene to early Pleistocene cooling is most important in the late Neogene climatic evolution. It differs from the previous cool events in its irreversible, steplike change in SST, which established the glacial climate characteristic of the late Pleistocene. The winter and summer SST decreased by 3.3-5.4°C and 1.0 2.1C in the subtropics, by 0.9°C and 0.6C in the equatorial region, and showed little or no cooling in the tropics. Moreover, this cooling event occurred as a gradual SST decrease during 2.2 1.0 Ma at the warmer subtropical sites, while that at cooler subtropical site was an abrupt SST drop at 2.2 Ma. In contrast, equatorial and tropical western Pacific experienced only minor SST change in the entire late Neogene. In general, subtropics was much more sensitive to climatic forcing than tropics and the cooling events were most extensive in the cooler subtropics. The early Pliocene cool periods can be correlated to the Antarctic ice volume fluctuation, and the latest Pliocene early Pleistocene cooling reflects the climatic evolution during the cryosphere development of the northern hemisphere.
Project(s):
Coverage:
Median Latitude: 16.923047 * Median Longitude: 152.048976 * South-bound Latitude: -0.498700 * West-bound Longitude: 124.650800 * North-bound Latitude: 32.441800 * East-bound Longitude: -74.400000
Date/Time Start: 1957-07-29T00:00:00 * Date/Time End: 1982-05-23T00:00:00
Event(s):
20-200 * Latitude: 12.836700 * Longitude: 156.782700 * Date/Time: 1971-10-26T00:00:00 * Elevation: -1479.0 m * Penetration: 114 m * Recovery: 35.4 m * Location: North Pacific/GUYOT * Campaign: Leg20 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 9 cores; 85.5 m cored; 9.5 m drilled; 41.4 % recovery
30-289 * Latitude: -0.498700 * Longitude: 158.511500 * Date/Time: 1973-05-31T00:00:00 * Elevation: -2206.0 m * Penetration: 1271 m * Recovery: 709.1 m * Location: South Pacific/PLATEAU * Campaign: Leg30 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 133 cores; 1270.8 m cored; 0 m drilled; 55.8 % recovery
31-292 * Latitude: 15.818500 * Longitude: 124.650800 * Date/Time: 1973-06-26T00:00:00 * Elevation: -2943.0 m * Penetration: 443.5 m * Recovery: 242.8 m * Location: North Pacific/Philippine Sea/CONT RISE * Campaign: Leg31 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 46 cores; 434 m cored; 9.5 m drilled; 56 % recovery
Size:
17 datasets

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Datasets listed in this publication series

  1. Wang, L (1994): (Appendix 1) Estimated sea-surface temperatures of DSDP Hole in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702141
  2. Wang, L (1994): (Appendix 1) Estimated sea-surface temperatures of DSDP Hole in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702140
  3. Wang, L (1994): (Appendix 1) Estimated sea-surface temperatures of DSDP Hole in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702139
  4. Wang, L (1994): (Appendix 1) Estimated sea-surface temperatures of DSDP Hole in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702143
  5. Wang, L (1994): (Appendix 1) Estimated sea-surface temperatures of DSDP Hole in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702138
  6. Wang, L (1994): (Appendix 1) Estimated sea-surface temperatures of DSDP Hole in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702142
  7. Wang, L (1994): (Appendix 1) Estimated sea-surface temperatures of DSDP Hole in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702144
  8. Wang, L (1994): (Appendix 1) Estimated sea-surface temperatures of DSDP Hole in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702145
  9. Wang, L (1994): (Appendix 2-1) Distribution of planktonic foraminifera in late Neogene sediments of DSDP Site 7-62A in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702124
  10. Wang, L (1994): (Appendix 2-2) Distribution of planktonic foraminifera in late Neogene sediments of DSDP Site 20-200 in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702127
  11. Wang, L (1994): (Appendix 2-3) Distribution of planktonic foraminifera in late Neogene sediments of DSDP Site 30-289 in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702136
  12. Wang, L (1994): (Appendix 2-4) Distribution of planktonic foraminifera in late Neogene sediments of DSDP Site 31-292 in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702135
  13. Wang, L (1994): (Appendix 2-5) Distribution of planktonic foraminifera in late Neogene sediments of DSDP Site 31-296 in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702130
  14. Wang, L (1994): (Appendix 2-6) Distribution of planktonic foraminifera in late Neogene sediments of DSDP Site 58-445 in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702131
  15. Wang, L (1994): (Appendix 2-7) Distribution of planktonic foraminifera in late Neogene sediments of DSDP Site 59-451 in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702132
  16. Wang, L (1994): (Appendix 2-8) Distribution of planktonic foraminifera in late Neogene sediments of DSDP Site 86-577 in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.702133
  17. Wang, L (1994): (Table 11) Estimated sea-surface temperatures of sediment core V12-122 in the Northwest Atlantic Ocean. https://doi.org/10.1594/PANGAEA.702137