Variations of East Asian summer monsoon since the last deglaciation based on Mg/Ca and oxygen isotope of planktic foraminifera in the northern East China Sea

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  • Yoshimi Kubota
    Department of Earth and Planetary Science, Graduate School of Science; University of Tokyo; Tokyo Japan
  • Katsunori Kimoto
    Research Institute for Global Change; Japan Agency for Marine-Earth Science and Technology; Yokosuka Japan
  • Ryuji Tada
    Department of Earth and Planetary Science, Graduate School of Science; University of Tokyo; Tokyo Japan
  • Hirokuni Oda
    Institute of Geology and Geoinformation, Geological Survey of Japan; National Institute of Advanced Industrial Science and Technology; Tsukuba Japan
  • Yusuke Yokoyama
    Department of Earth and Planetary Science, Graduate School of Science; University of Tokyo; Tokyo Japan
  • Hiroyuki Matsuzaki
    Department of Nuclear Engineering and Management; University of Tokyo; Tokyo Japan

書誌事項

タイトル別名
  • VARIATIONS OF EAST ASIAN SUMMER MONSOON
公開日
2010-10-22
資源種別
journal article
権利情報
  • http://doi.wiley.com/10.1002/tdm_license_1.1
DOI
  • 10.1029/2009pa001891
公開者
American Geophysical Union (AGU)

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説明

[1] Variations in Mg/Ca-based sea surface temperature and oxygen isotope ratio (δ18O) of the surface water in the northern East China Sea (ECS) were reconstructed with high resolution during the last 18 kyr using planktic foraminifera. Millennial-scale variations between warmer, more saline surface water and cooler, less saline surface water were recognized during the early deglacial period and the Holocene, suggesting changes in the mixing ratio between the Kuroshio Water and the Changjiang Diluted Water. Stronger East Asian summer monsoon (EASM) precipitation events in south China are identified at 10.5, 8.8, 7.0, 5.3, 4.7, 2.9, 1.7, and 0.5 ka, based on sea surface salinity (SSS) records of the northern ECS. Weaker EASM precipitation events are also detected at 9.3, 8.3, 7.3, 6.0, 3.3, 2.3, 0.7, and 0.4 ka during the Holocene. These events agree with the maxima in δ18O records of stalagmites from various parts of the Changjiang (Yangtze) River drainage. This agreement supports that our SSS record properly captures the millennial-scale dry (less EASM precipitation) events over the drainage basin of the Changjiang River during the Holocene. These dry events are also in good agreement with North Atlantic ice-rafted events, suggesting a teleconnection between North Atlantic climate and the EASM during the Holocene.

収録刊行物

  • Paleoceanography

    Paleoceanography 25 (4), n/a-n/a, 2010-10-22

    American Geophysical Union (AGU)

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