Stalagmite-inferred variability of the Asian summer monsoon during the penultimate glacial-interglacial period

T. Y. Li, C. C. Shen*, L. J. Huang, X. Y. Jiang, X. L. Yang, H. S. Mii, S. Y. Lee, L. Lo


研究成果: 雜誌貢獻期刊論文同行評審

29 引文 斯高帕斯(Scopus)


The orbital-timescale dynamics of the Quaternary Asian summer monsoons (ASM) are frequently attributed to precession-dominated northern hemispheric summer insolation. However, this long-term continuous ASM variability is inferred primarily from oxygen isotope records of stalagmites, mainly from Sanbao cave in mainland China, and may not provide a comprehensive picture of ASM evolution. A new spliced stalagmite oxygen isotope record from Yangkou cave tracks summer monsoon precipitation variation from 124 to 206 thousand years ago in Chongqing, southwest China. Our Yangkou record supports that the evolution of ASM was dominated by the North Hemisphere solar insolation on orbital timescales. When superimposed on the Sanbao record, the precipitation time series referred from Yangkou cave stalagmites supports the strong ASM periods at marine isotope stages (MIS) 6.3, 6.5, and 7.1 and weak ASM intervals at MIS 6.2, 6.4, and 7.0. This consistency confirms that ASM events affected most of mainland China. Except for the solar insolation forcing, the large amplitude of minimum Î́18O values in Yangkou record during glacial period, such as MIS 6.5, could stem from the enhanced prevailing Pacific trade wind and/or continental shelf exposure in the Indo-Pacific warm pool.

頁(從 - 到)1211-1219
期刊Climate of the Past
出版狀態已發佈 - 2014 六月 24

ASJC Scopus subject areas

  • 全球和行星變化
  • 地層學
  • 古生物學


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