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Plant-wax hydrogen isotopic evidence for postglacial variations in delivery of precipitation in the monsoon domain of China
Seki, O (Seki, Osamu)1; Meyers, PA (Meyers, Philip A.)2; Yamamoto, S (Yamamoto, Shinya)1; Kawamura, K (Kawamura, Kimitaka)1; Nakatsuka, T (Nakatsuka, Takeshi)3; Zhou, WJ (Zhou, Weijian)4; Zheng, YH (Zheng, Yanhong)5
2011-09-30
发表期刊GEOLOGY
卷号39期号:9页码:875-878
文章类型期刊论文
摘要

The Asian monsoon is a key component of the Earth's climate system that directly affects the livelihood of 60% of the world population. Reliable reconstruction of changes in monsoon precipitation during the Holocene is required to better understand the present climate conditions and to predict future climate processes in the Asian monsoon domain. Reconstruction of changes in Holocene monsoon precipitation has been done in various regions of this domain using a variety of paleoclimate proxies. However, different proxies have yielded different paleoclimate records of long-term monsoon rainfall variability. We apply compound-specific stable hydrogen isotope compositions of the plant wax n-alkanes isolated from the Hongyuan peat sequence in eastern Tibet to reevaluate the regional carbonate oxygen isotopic and lake-level records. The D/H ratios of the n-alkanes resolve the apparent discrepancy among the different paleoclimate proxies. Our result indicates that lake-level fluctuation is a reliable recorder of changes in the amount of summer monsoonal precipitation while long-term isotope records largely reflect large-scale changes in the source of water vapor rather than a local precipitation signal. Combining lake-level, biomarker, and carbonate isotopic records, we conclude that the early Holocene monsoon precipitation in southwest China has been greatly influenced by the Indian monsoon.

DOI10.1130/G32117.1
收录类别SCI
语种英语
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被引频次:43[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10345
专题加速器质谱中心
通讯作者Seki, O (Seki, Osamu)1
作者单位1.Institute of Low Temperature Science, Hokkaido University, N19W8, Kita-ku, Sapporo 060-0819, Japan;
2.Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1005, USA;
3.Graduate School of Environmental Studies, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan;
4.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences,Xi’an 710075, China;
5.State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an 710069, China
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Seki, O ,Meyers, PA ,Yamamoto, S ,et al. Plant-wax hydrogen isotopic evidence for postglacial variations in delivery of precipitation in the monsoon domain of China[J]. GEOLOGY,2011,39(9):875-878.
APA Seki, O .,Meyers, PA .,Yamamoto, S .,Kawamura, K .,Nakatsuka, T .,...&Zheng, YH .(2011).Plant-wax hydrogen isotopic evidence for postglacial variations in delivery of precipitation in the monsoon domain of China.GEOLOGY,39(9),875-878.
MLA Seki, O ,et al."Plant-wax hydrogen isotopic evidence for postglacial variations in delivery of precipitation in the monsoon domain of China".GEOLOGY 39.9(2011):875-878.
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