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题名: Millennial-scale climate change since the last glaciation recorded by grain sizes of loess deposits on the northeastern Tibetan Plateau
作者: Lu, LQ; Fang, XM; Lu, HY; Han, YX; Yang, SL(杨胜利); Li, JJ(李吉均); An, ZS
收录类别: SCIE
出版日期: 2004-06
刊名: CHINESE SCIENCE BULLETIN
卷号: 49, 期号:11, 页码:1157-1164
期刊主办单位: 中国科学院
出版者: SCIENCE CHINA PRESS
出版地: BEIJING
英文摘要: Whether climatic changes in high latitudes of the Northern Hemisphere since the last glaciation have effects on the Tibetan Plateau monsoon, and the variation characteristics of the Plateau monsoon itself are still not solved but of great significance. The 22-m high-resolution loess-paleosol sequence in the Hezuo Basin on the northeastern Tibetan Plateau demonstrates that the Plateau winter monsoon experienced a millennial variation similar to high latitude Northern Hemisphere, with cold events clearly correlated with Heinrich events but less for the warm events (Dansgarrd-Oeschger events). It may indicate that the climate system at high latitudes in the Northern Hemisphere had played an important role in both the Plateau monsoon and the high-level westerlies. On 104 year scale, there are two distinct anomalous changes, which are not found in the records from high latitude northern hemisphere, revealed by the loess grain size in the Hezuo Basin. One is that there was a considerable grain size increase at similar to36 kaBP, suggesting an abrupt enhancement of the Plateau winter monsoon at that time; the other is that, during 43-36 kaBP, the grain size decreased distinctly, indicating a notable weakening of the Plateau winter monsoon around that period. Both of the two anomalies suggest that the Tibetan climate may have been controlled by some other factors, besides the high latitude climatic changes in the Northern Hemisphere.
关键词: NE Tibetan Plateau ; the last glaciation ; grain size ; millennial-scale monsoon variation
作者部门: Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710054, Peoples R China ; Lanzhou Univ, MOE Natl Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China ; Lanzhou Univ, Dept Geog, Lanzhou 730000, Peoples R China ; China Meteorol Adm, Inst Arid Meteorol, Lanzhou 730020, Peoples R China
通讯作者: Lu, LQ (reprint author), Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710054, Peoples R China.
学科分类: Science & Technology - Other Topics
文章类型: Article
语种: 英语
DOI: 10.1360/03wd0467
ISSN号: 1001-6538
WOS记录号: WOS:000223293300012
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/119610
Appears in Collections:资源环境学院_期刊论文

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Recommended Citation:
Lu, LQ,Fang, XM,Lu, HY,et al. Millennial-scale climate change since the last glaciation recorded by grain sizes of loess deposits on the northeastern Tibetan Plateau[J]. CHINESE SCIENCE BULLETIN,2004,49(11):1157-1164.
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