A high-resolution climatic change since the Late Glacial Age inferred from multi-proxy of sediments in Qinghai Lake

查看全文 作　　者：Ryo [1]Matsumoto

机构地区：[1]Geology Institute, Tokyo University, Tokyo 113, Japan

出　　处：《Science China Earth Sciences》索引2005年第48卷第6期,共10页

基　　金：the National Natural Science Foundation of China(Grant No.40072056);the Knowledge Innovation Project of the Chinese Academy of Sciences(CAS)(Grant No.KZCX1-10-01);the Post-doctor Foundation of China ; the Foundation of Key Laboratory of Lake Sedimentation and Environment,Nanjing Institute of Geography and Limnology,CAS 摘　　要：Based on multi-proxy analysis of pollen, carbonate, TOC, TN and δ13C of organic matters, a high-resolution climatic evolution of Qinghai Lake since the Late Glacial Age is recon-structed. 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 fluc-tuated 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 cli-matic 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. 关键词：QINGHAI Lake, LATE-GLACIAL Age to Holocene, MULTI-PROXY analysis, high-resolution, palaeoclimate.

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A high-resolution climatic change since the Late Glacial Age inferred from multi-proxy of sediments in Qinghai Lake

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