Glacial-interglacial climate change on the northeastern Tibetan Plateau over the last 600 kyr
Glacial-interglacial climate change on the northeastern Tibetan Plateau over the last 600 kyr
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近600年来青藏高原东北部冰期-间冰期气候变化
DOI：
10.1016/j.palaeo.2017.04.007
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发表时间：
2017-06
期刊：
影响因子：
--
通讯作者：
Chengcheng Ye
中科院分区：
文献类型：
--
作者：
Yibo Yang;Rongsheng Yang;Xiangyu Li;Wenxia Han;Jinbo Zan;Xiaomin Fang;Erwin Appel;Albert Galy;Fuli Wu;Song Yang;Zhigao Zhang;Weilin Zhang;Chengcheng Ye
探索中纬度西风带和东亚季风系统之间的相互作用对于揭示气候变化至关重要。中亚内陆干旱化的机制和过程。本研究利用SG-1钻孔岩心对西部干旱地区的湖泊沉积物进行了高分辨率的酸溶dmn记录。过去600年的变化。柴达木盆地西部气候具有明显的冰期和间冰期特征。随着全球气候和北大西洋海面温度的变化而变化。（海温），以西风带的形式表明了盆地气候与北大西洋之间的遥相关。然而，该盆地的气候也与东亚冬季风（EAWM）的活动密切相关。中国黄土高原黄土-古土壤序列在冰期-间冰期时间尺度上的粒度变化记录。即使在冰期，一些相对温暖/潮湿的阶段也伴随着。柴达木盆地西部高古湖泊水平与相对较弱的EAWM相适应。而这些暖/湿阶段与东亚夏季风（EASM）的关系较弱。北大西洋海温。这些结果为柴达木西部地区的气候变化提供了证据。盆地现在和过去不仅受西风带控制，而且受到西伯利亚高压的强烈影响。至少在冰期是这样。然而，确切的驱动机制需要在未来的研究中进一步探索。
Exploring the interplay between the mid-latitudeWesterlies and East Asian monsoon systems is crucial for revealing.the mechanisms and processes behind the aridification of the central Asian interior. In this study, a.high-resolution acid-dissolvedMn record of lacustrine sediments from a drilling core (SG-1) in the arid western.Qaidam Basin on the northeastern Tibetan Plateau (TP) largely reveals the evolution of lake levels and climate.change over the last 600 kyr. The climate in the western Qaidam Basin shows distinct glacial and interglacial.changes in accordance with changes in the global climate, and in North Atlantic sea surface temperatures.(SSTs), indicating the teleconnection between the basin's climate and the North Atlantic in the form of theWesterlies..However, the basin's climate also correlates closely with East Asian Winter Monsoon (EAWM) activity as.recorded by the grain size variations in loess-paleosol sequences on the Chinese Loess Plateau (CLP) over a glacial-.interglacial timescale. Even during glacial periods, some relatively warm/humid stages accompanied by.high paleolake levels in the western Qaidam Basin are generally conformable with relatively weak EAWM,.whereas these warm/humid stages show a weak relation with the East Asian Summer Monsoon (EASM) and.North Atlantic SSTs. These results collectively provide evidence that climate change in the western Qaidam.Basin is, and was, not only controlled by the Westerlies, but also strongly influenced by the Siberian High, at.least during glacial periods. The exact driving mechanism, however, needs to be explored further in future.studies.
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