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题名: Hydrological changes in Shuangchi Lake, Hainan Island, tropical China, during the Little Ice Age
作者: Zhang, WC(Zhang, Wenchao)1, 2;  Yan, H(Yan, Hong)1, 3;  Lu, FY(Lu, Fengyan)1;  Ma, XL(Ma, Xiaolin)1;  Dodson, John1;  Heijins, Henk1, 4;  Zhou, WJ(Zhou, Weijian)5;  An, ZS(An, Zhisheng)1;  Liu, CC(Liu, Chengcheng)1;  Cheng, P(Cheng, Peng)1, 2;  Li, JY(Li, Jianyong)1
关键词: Hainan Island ;  XRF core scanner ;  Elemental ratios ;  Hydrological changes ;  Little Ice Age
刊名: Quaternary International
发表日期: 2019-09-10
DOI: 10.1016/j.quaint.2017.09.007
卷: 487, 期:2018, 页:54-60
收录类别: SCI
英文摘要: Hydrological changes in East Asia during the last millennium have been addressed by numerous earlier studies, but spatial characteristics and dynamics in precipitation variations during the Little Ice Age (LIA) remain unclear, perhaps especially due to the sparse coverage of high-resolution hydrological records from tropical and sub-tropical regions in East Asia. In this study, a sediment core was obtained from Shuangchi Lake in northern Hainan Island, tropical China, of which geochemical proxies including the ratios of Rb/Sr, Rb/K, Zr/Rb and Si/Ti were analyzed using an X-ray fluorescence (XRF) core scanner. Meanwhile, the grain size distribution of sediments was also determined. The results show that the Rb/Sr and Rb/K ratios decreased significantly during the LIA, whilst the Zr/Rb and Si/Ti ratios increased along with higher median grain size. The changes of these proxies likely suggest that precipitation was enhanced during the LIA in this region, and this was consistent with other hydrological records from tropical southern China. The synthesis of hydrological records from East Asia and the tropical Pacific suggest that the co-existence of a contracted Intertropical Convergence Zone (ITCZ) and strengthened Pacific Walker circulation (PWC) could contribute synchronously to the increased precipitation in the tropical region of southern China during the LIA.
语种: 英语
所属项目编号: 41522305 ;  41403018 ;  QYZDB-SSW-DQC001 ;  132B61KYSB20160003 ;  QNLM2016ORP0202
项目资助者: National Natural Science Foundation of China ;  research Projects from Chinese Academy of Sciences ;  Qingdao National Laboratory for Marine Science and Technology of China
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内容类型: 期刊论文
URI标识: http://ir.ieecas.cn/handle/361006/5294
Appears in Collections:古环境研究室_期刊论文

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作者单位: 1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China
4.School of Earth and Environmental Sciences, University of Wollongong, Wollongong 2500, Australia
5.Institute for Environmental Research, Australian Nuclear Science and Technology Organization, Lucas Heights, New South Wales 2232, Australia

Recommended Citation:
Zhang, WC,Yan, H,Lu, FY,et al. Hydrological changes in Shuangchi Lake, Hainan Island, tropical China, during the Little Ice Age[J]. Quaternary International,2019,487(2018):54-60.
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文件名: Hydrological changes in Shuangchi Lake, Hainan Island, tropical China, during the Little Ice Age.pdf
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