| A high-resolution climatic change since the Late Glacial Age inferred from multi-proxy of sediments in Qinghai Lake |
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| 作者姓名： | Ryo Matsumoto |
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| 作者单位： | Geology Institute，Tokyo University，Tokyo 113，Japan |
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| 基金项目： | 中国科学院资助项目，中国科学院知识创新工程项目，the Post-doctor Foundation of China and the Foundation of Key Laboratory of Lake Sedimentation and Environment |
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| 摘 要： | The study of climatic changes since the Late Glacial Age has become one of the hotspots of the PAGES in recent years.Deep-sea cores from the high-latitude area show that the climate was very unstable during the transitional period from the Late Glacial Age to the Holocene1,2],which has also been testified by the geological records from ocean sediments,ice cores and terrestrial sections in different latitudes of the earth3—8].What’s more,climatic instability also ex-isted in the Holoce…
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| 收稿时间： | 21 April 2003 |
A high-resolution climatic change since the Late Glacial Age inferred from multi-proxy of sediments in Qinghai Lake |
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| Ryo Matsumoto.A high-resolution climatic change since the Late Glacial Age inferred from multi-proxy of sediments in Qinghai Lake[J].Science in China(Earth Sciences),2005,48(6):742-751. |
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| Authors: | Shen?Ji Email author" target="_blank">Xingqi?LiuEmail author Matsumoto?Ryo Sumin?Wang Xiangdong?Yang |
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| Institution: | 1. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
2. Geology Institute, Tokyo University, Tokyo 113, Japan |
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| Abstract: | Based on multi-proxy analysis of pollen, carbonate, TOC, TN and δ 13C of organic matters, a high-resolution climatic evolution of Qinghai Lake since the Late Glacial Age is reconstructed. The
results indicate that the boundary between the Last Glacial Maximum and the Late Glacial Age is at about 18.2 cal.ka BP. The
warm and wet period, which began at about 15.4 cal.ka BP, culminated at 7.4 cal.ka BP and came to its end at about 4.5 cal.ka
BP. After that, the climate gradually became cold and dry. The multi-proxy analysis indicates that the climate fluctuated
greatly during the transitional period from the Late glacial Age to the Holocene, and this is in good accordance with that
reflected by deep sea cores of North Atlantic, ice cores of Greenland, lake sediments in Europe, loess sequences and Guliya
ice core in China. The climatic evolutional characteristic of the Qinghai Lake since the Late Glacial Age shows that the driving
force of the East-Asia Monsoon correlates with solar radiation on the ten-thousand-year scale. |
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| Keywords: | Qinghai Lake Late-Glacial Age to Holocene multi-proxy analysis high-resolution palaeoclimate |
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