Late Miocene - early Pleistocene climate change in the mid-latitude westerlies and their influence on Asian monsoon as constrained by the K/Al ratio record from drill core Ls2 in the Tarim Basin | |
Chang, Hong; An, Zhisheng; Wu, Feng; Song, Yougui; Qiang, Xiaoke; Li, Leyi | |
2017-06-01 | |
发表期刊 | CATENA |
卷号 | 153期号:2017页码:75-82 |
文章类型 | Article |
摘要 | In order to study the evolution of westerly mid-latitude winds, we analyzed K/Al records from lacustrine and fluvial sediments of drill core Ls2 in the eastern Tarim Basin, for which the sedimentary record is continuous and well dated back to the late Miocene by magnetostratigraphy. The K/Al ratio obtained from drill core Ls2 may be a proxy index for precipitation amounts in the Tarim Basin. K/Al ratios from drill core Ls2 indicate that precipitation increased gradually in the Tarim Basin from 7.24-634 Ma, with a brief but rapid decrease from 6.708-6.702 Ma. Climate became increasingly arid beginning at similar to 5.68 Ma. We attribute these paleoclimatic changes in the Tarim Basin in western China to: (1) global phenomena, such as the expansion of global ice volume, and (2) regional forcings, such as the growth of the Tibetan Plateau and the retreat of the Paratethys Ocean. Expansion of global ice volume and uplift of the Tibetan Plateau migrated Westerlies southward, which results in the transport of moisture to the south and east of the Plateau and enhanced the aridification of western China. The retreat of the Paratethys Ocean may have further exacerbated the lack of water vapor. The change of westerly wind's in the late Miocene-Early Pliocene may have influenced East Asian climate on the basis of comparison climatic indices from these two regions. (C) 2017 Elsevier B.V. All rights reserved. |
关键词 | Climate Change K/al Ratio Arid Late Miocene-pleistocene Westerlies Asian Winter Monsoon |
WOS标题词 | Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine |
DOI | 10.1016/j.catena.2017.02.002 |
关键词[WOS] | NORTHERN TIBETAN PLATEAU ; RESOLUTION MAGNETO STRATIGRAPHY ; CHINESE LOESS PLATEAU ; ALTYN-TAGH FAULT ; QAIDAM BASIN ; ENVIRONMENTAL-CHANGES ; ATMOSPHERIC CIRCULATION ; CENOZOIC DEFORMATION ; LACUSTRINE RECORD ; QINGHAI PROVINCE |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Geology ; Agriculture ; Water Resources |
WOS类目 | Geosciences, Multidisciplinary ; Soil Science ; Water Resources |
WOS记录号 | WOS:000396950500009 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/5501 |
专题 | 古环境研究室 |
作者单位 | Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China |
推荐引用方式 GB/T 7714 | Chang, Hong,An, Zhisheng,Wu, Feng,et al. Late Miocene - early Pleistocene climate change in the mid-latitude westerlies and their influence on Asian monsoon as constrained by the K/Al ratio record from drill core Ls2 in the Tarim Basin[J]. CATENA,2017,153(2017):75-82. |
APA | Chang, Hong,An, Zhisheng,Wu, Feng,Song, Yougui,Qiang, Xiaoke,&Li, Leyi.(2017).Late Miocene - early Pleistocene climate change in the mid-latitude westerlies and their influence on Asian monsoon as constrained by the K/Al ratio record from drill core Ls2 in the Tarim Basin.CATENA,153(2017),75-82. |
MLA | Chang, Hong,et al."Late Miocene - early Pleistocene climate change in the mid-latitude westerlies and their influence on Asian monsoon as constrained by the K/Al ratio record from drill core Ls2 in the Tarim Basin".CATENA 153.2017(2017):75-82. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Late Miocene - early(2196KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 请求全文 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论