IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2005-2009)
Asynchronous Holocene optimum of the East Asian monsoon
Z.S. An; S. C. Porter; Kutzbach; X.H. Wu; S.M. Wang; X.D. Liu; X.Q. Li; W.J. Zhou
Source PublicationQuaternary Science Reviews
Cooperation Status国际

    The spatial and temporal distribution of summer monsoon precipitation (or e!ective moisture) during the Holocene has been
reconstructed on the basis of geological data, including lake levels, pollen pro"les, and loess/paleosol records. In addition, the summer (July) precipitation increment, e!ective precipitation, and monsoon strength index have been obtained from numerical modeling experiments. Both geological data and numerical modeling indicate that the Holocene optimum, as de"ned by peak East Asian summer monsoon precipitation, was asynchronous in central and eastern China, reaching a maximum at di!erent times in di!erent regions, e.g., ca. 10,000}8000 yr ago in northeastern China, 10,000}7000 yr ago in north-central and northern east-central China, ca. 7000}5000 yr ago in the middle and lower reaches of the Yangtze River, and ca. 3000 yr ago in southern China. In southwestern China the maximum appeared ca. 11,000 yr ago, but probably was related to the maximum landward extension of the Indian summer monsoon. The regional shift in the maximum precipitation belt from northwest to southeast over the past 10,000 yr is interpreted as a response to changing seasonality related to orbital forcing of the climate. The southeastward shift of the East Asian summer monsoon maximum is consistent with the progressive weakening of the summer monsoon as the summer solar radiation anomaly decreased progressively through the Holocene and the East Asian monsoon index declined, while the early maximum in southwestern China matches the maximum of the Indian monsoon index.

Subject Area地球系统科学与全球变化科学
Indexed BySCI
Document Type期刊论文
Recommended Citation
GB/T 7714
Z.S. An,S. C. Porter,Kutzbach,et al. Asynchronous Holocene optimum of the East Asian monsoon[J]. Quaternary Science Reviews,2000,19(8):743-762.
APA Z.S. An.,S. C. Porter.,Kutzbach.,X.H. Wu.,S.M. Wang.,...&W.J. Zhou.(2000).Asynchronous Holocene optimum of the East Asian monsoon.Quaternary Science Reviews,19(8),743-762.
MLA Z.S. An,et al."Asynchronous Holocene optimum of the East Asian monsoon".Quaternary Science Reviews 19.8(2000):743-762.
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