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| High-resolution peat records for Holocene monsoon history in the eastern Tibetan Plateau | |
| 作者姓名： | Lars G. Franzen A.J.Tim Jull |
| 作者单位： | Department of Earth Sciences Goteborg University P.O. Box 460 SE-405 30 Goteborg Sweden，NSF-AMS Facility University of Arizona Arizona AZ85721 USA |
| 基金项目： | 国家重点基础研究发展计划(973计划);中国科学院资助项目;科技部资助项目;国家重点实验室基金 |
| 摘 要： | Holocene peat sediment has been attached impor-tance to reconstruct the Holocene climatic variations because it can provide much palaeoclimatic informa-tion with high resolution. Analysis on the plant mac-rofossil1], pollen2―4], isotope ratio5―9], element con-tent10,11], total organic carbon (TOC)12], humifica-tion13,14] and grayscale12] for peat sediment has shown its superiorities as a recorder medium for reconstruct-ing the Holocene climate. Hong et al. have done great fruitful w… |
| 收稿时间： | 10 January 2005 |
| 修稿时间： | 23 November 2005 |
High-resolution peat records for Holocene monsoon history in the eastern Tibetan Plateau |
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| Lars G. Franzen,A.J.Tim Jull.High-resolution peat records for Holocene monsoon history in the eastern Tibetan Plateau[J].Science in China(Earth Sciences),2006,49(6):615-621. | |
| Authors: | YU Xuefeng ZHOU Weijian Lars GFranzen XIAN Feng CHENG Peng AJ Tim Jull |
| Institution: | 1. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China 2. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China;Xi'an Jiaotong University, Xi'an 710049, China 3. Department of Earth Sciences, Goteborg University, P.O. Box 460 SE-405 30 Goteborg, Sweden 4. NSF-AMS Facility, University of Arizona, Arizona, AZ85721, USA |
| Abstract: | The variations of summer and winter monsoons during the Holocene in the eastern Ti-betan Plateau are shown to follow two basic models based on the reliable dating and high-resolution monsoon proxies determinations, one being a synchronous model in that both summer and winter monsoons are strengthening or decreasing, and the other to form a complementary pattern. These two different patterns evenly interact with each other on different time scales and together compose a complicated monsoon climatic model in this region. The climatic condition integrated by winter and summer monsoons is synchronous to the global pattern, which also shows the instability of the Holocene climate on centennial-millennial timescale. The abrupt monsoon event in about 6.2 ka cal. BP is much more severe than that in ca. 8.0 ka cal. BP, which indicates the regional character of the Asian monsoon and that the Asian monsoon climate is indeed a window on the global climate system. |
| Keywords: | eastern Tibetan Plateau Holocene winter and summer monsoons asynchronous peat climate instability |
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