High-resolution precipitation variations in the Northeast Tibetan Plateau over the last 800 years documented by sediment cores of Qinghai Lake
文献类型：期刊论文
| 作者 | Zhang, JW; Jin, M; Chen, FH; Battarbee, RW; Henderson, ACG |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2003-07-01 |
| 卷号 | 48期号:14页码:1451-1456 |
| 关键词 | Qinghai Lake carbonate oxygen isotope grain size effective precipitation Tibetan Plateau |
| ISSN号 | 1001-6538 |
| DOI | 10.1360/02wd0271 |
| 通讯作者 | Chen, FH(fhchen@lzu.edu.cn) |
| 英文摘要 | Short cores of about 80-cm retrieved from three main basins of the deepwater areas in Qinghai Lake, the largest inland enclosed lake in China, were studied. Stable isotopes of authigenic carbonates, grain-size, carbonate and organic matter content at 5-year resolution are used to reconstruct the climatic history over the last 800 years in the Northeastern Tibetan Plateau. Chronology was established according to (210)Pb dating and (137)Cs methods and the core correlation. It is found that cores from different deep basins of the lake can be well correlated. The sedimentary rate is highest in the western basin of the lake and lowest in the east. In the southern basin of the lake where the short core Qing-6 is located, the recent average sedimentation rate is 0.1004 cm/yr. Variations in effective precipitation recorded by the oxygen isotopes and grain size data during the last 800 years are consistent with the glacial accumulation record form the Dunde and Guliya ice cores. A dry climate lasted for 300 years from 1200 AD to 1500 AD, followed by a wet period from 1500 to 1560 AD. The two dry periods, 1560 to 1650 AD and 1780 to 1850 AD, were the results of southwest monsoon weakening. The effective precipitation generally increased since 1650 AD due to the strengthening of the Asian Southwest Monsoon, resulting in a wet period until the 1950s. Except the early stage, the Little Ice Age on the Plateau is characterized by increased effective moisture. Organic matter content, with nearly 200-year cycles, shows similar trend with the atmospheric delta carbon-14 before the 1850s, indicating that the bioproductivity responds to solar activity. |
| 收录类别 | SCI ; ISTP |
| WOS关键词 | DASUOPU ICE CORE ; CHINA ; MONSOON ; RECORD |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000184463300010 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556880 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Chen, FH |
| 作者单位 | 1.Lanzhou Univ, Ctr Arid Environm & Paleoclimate Res, Natl Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Desert & Desertificat Lab, Lanzhou 730000, Peoples R China 3.UCL, Dept Geog, Environm Change Res Ctr, London WC1H 0AP, England |
| 推荐引用方式 GB/T 7714 | Zhang, JW,Jin, M,Chen, FH,et al. High-resolution precipitation variations in the Northeast Tibetan Plateau over the last 800 years documented by sediment cores of Qinghai Lake[J]. CHINESE SCIENCE BULLETIN,2003,48(14):1451-1456. |
| APA | Zhang, JW,Jin, M,Chen, FH,Battarbee, RW,&Henderson, ACG.(2003).High-resolution precipitation variations in the Northeast Tibetan Plateau over the last 800 years documented by sediment cores of Qinghai Lake.CHINESE SCIENCE BULLETIN,48(14),1451-1456. |
| MLA | Zhang, JW,et al."High-resolution precipitation variations in the Northeast Tibetan Plateau over the last 800 years documented by sediment cores of Qinghai Lake".CHINESE SCIENCE BULLETIN 48.14(2003):1451-1456. |
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来源：寒区旱区环境与工程研究所
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