Chinese Science Bulletin

, Volume 46, Issue 2, pp 153–157

The paleoclimatic events and cause in the Okinawa Trough during 50 kaBP

Authors

    • Key Laboratory of Marine Science and Numerical ModelingState Oceanic Administration (SOA)
    • First Institute of OceanographySOA
  • Tiegang Li
    • Institute of OceanologyChinese Academy of Sciences
  • Peiying Li
    • First Institute of OceanographySOA
  • Qiyu Huang
    • Taiwan University
  • S. Berne
    • French Oceanographic InstituteIFREMER
  • Y. Saito
    • Geological Survey of Japan
  • Zhenbo Cheng
    • First Institute of OceanographySOA
  • Gangjian Wei
    • Taiwan University
  • Lejung Liu
    • First Institute of OceanographySOA
  • Zhen Li
    • First Institute of OceanographySOA
Notes

DOI: 10.1007/BF03187013

Cite this article as:
Liu, Z., Li, T., Li, P. et al. Chin.Sci.Bull. (2001) 46: 153. doi:10.1007/BF03187013

Abstract

Planktonic foraminiferal δ18O record for core DGKS9603 from the Okinawa Trough shows a series of climatic fluctuations and sudden cooling events in short time scale during 50 kaBP, which appear to correlate closely to the Younger Dryas and Heinrich events H1–5 recorded in Chinese loess, the South China Sea, the North Atlantic cores and the Greenland ice cores. Three polarity reversal events, correlating to Gothenburg, Mungo and Laschamp events, approximately correspond to Heinrich events H1, H3 and H5 respectively, which could be a cause of global climate changes. The δ18O curve of the Okinawa Trough is well associated with the grain size record of the Lijiayuan loess profile in northwestern China and is somewhat different from the climate fluctuations documented in the Greenland ice cores. These correlation results indicate that regional factors play an important role in controlling the climate changes in the East Asia, and the East Asian Monsoon could be the prominent regional controlling factor.

Keywords

Okinawa Troughsudden paleoclimatic change eventspolarity reversal eventsLate Quaternary

Copyright information

© Science in China Press 2001