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, Horng-Sheng Mii, S. Y. Lee, L. Lo

Research output: Contribution to journalArticle

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Abstract

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.

Original languageEnglish
Pages (from-to)1211-1219
Number of pages9
JournalClimate of the Past
Volume10
Issue number3
DOIs
Publication statusPublished - 2014 Jun 24

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stalagmite
interglacial
monsoon
summer
marine isotope stage
insolation
cave
oxygen isotope
timescale
warm pool
trade wind
precession
continental shelf
time series

ASJC Scopus subject areas

  • Global and Planetary Change
  • Stratigraphy
  • Palaeontology

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Stalagmite-inferred variability of the Asian summer monsoon during the penultimate glacial-interglacial period. / Li, T. Y.; Shen, C. C.; Huang, L. J.; Jiang, X. Y.; Yang, X. L.; Mii, Horng-Sheng; Lee, S. Y.; Lo, L.

In: Climate of the Past, Vol. 10, No. 3, 24.06.2014, p. 1211-1219.

Research output: Contribution to journalArticle

Li, T. Y. ; Shen, C. C. ; Huang, L. J. ; Jiang, X. Y. ; Yang, X. L. ; Mii, Horng-Sheng ; Lee, S. Y. ; Lo, L. / Stalagmite-inferred variability of the Asian summer monsoon during the penultimate glacial-interglacial period. In: Climate of the Past. 2014 ; Vol. 10, No. 3. pp. 1211-1219.
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