干旱区生态环境知识资源中心(Arid): Extreme Flood Events over the Past 300 Years Inferred from Lake Sedimentary Grain Sizes in the Altay Mountains, Northwestern China

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	Extreme Flood Events over the Past 300 Years Inferred from Lake Sedimentary Grain Sizes in the Altay Mountains, Northwestern China
	Zhou Jianchao; Wu Jinglu; Zeng Haiao
来源期刊	Chinese Geographical Science
ISSN	1002-0063
出版年	2018
卷号	28 期号:5 页码:773-783
英文摘要	Understanding the temporal variations of extreme floods that occur in response to climate change is essential to anticipate the trends in flood magnitude and frequency in the context of global warming. However, long-term records of paleofloods in arid regions are scarce, thus preventing a thorough understanding of such events. In this study, a reconstruction of paleofloods over the past 300 years was conducted through an analysis of grain sizes from the sediments of Kanas Lake in the Altay Mountains of northwestern China. Results showed that grain parameters and frequency distributions can be used to infer possible abrupt environmental events within the lake sedimentary sequence, and two extreme flood events corresponding to ca. 1736-1765 AD and ca. 1890 AD were further identified based on canonical discriminant analysis (CDA) and coarse percentile versus median grain size (C-M) pattern analysis, both of which occurred during warmer and wetter climate conditions by referring to tree-ring records. These two flood events are also evidenced by lake sedimentary records in the Altay and Tianshan mountains. Furthermore, through a comparison with other records, the flood event from ca. 1736-1765 AD in the study region seems to have occurred in both the arid central Asia and the Alps in Europe, and thus may have been associated with changes in the North Atlantic Oscillation (NAO) index.
英文关键词	flood events grain size Kanas Lake Altay Mountains North Atlantic Oscillation (NAO)
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:6318807
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335990
作者单位	Zhou Jianchao, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences;;University of Chinese Academy of Sciences, State Key Laboratory of Lake Science and Environment;;, Nanjing;;, ;;Beijing 210008;;100049.; Wu Jinglu, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences;;Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, State Key Laboratory of Lake Science and Environment;;, Nanjing;;Urumqi, ;; 210008;;830011.; Zeng Haiao, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, State Key Laboratory of Lake Science and Environment, Nanjing, Jiangsu 210008, China.
推荐引用方式 GB/T 7714	Zhou Jianchao,Wu Jinglu,Zeng Haiao. Extreme Flood Events over the Past 300 Years Inferred from Lake Sedimentary Grain Sizes in the Altay Mountains, Northwestern China[J],2018,28(5):773-783.
APA	Zhou Jianchao,Wu Jinglu,&Zeng Haiao.(2018).Extreme Flood Events over the Past 300 Years Inferred from Lake Sedimentary Grain Sizes in the Altay Mountains, Northwestern China.Chinese Geographical Science,28(5),773-783.
MLA	Zhou Jianchao,et al."Extreme Flood Events over the Past 300 Years Inferred from Lake Sedimentary Grain Sizes in the Altay Mountains, Northwestern China".Chinese Geographical Science 28.5(2018):773-783.