CCPortal
DOI10.1029/2018JD028712
Late Pliocene Monsoonal Rainfall Gradients in Western China Recorded by the Eolian Deposits From the Linxia Basin, NE Tibetan Plateau
Zan, Jinbo; Fang, Xiaomin; Li, Xiaojing; Zhang, Weilin; Yan, Maodu; Shen, Miaomiao
通讯作者Zan, JB (通讯作者)
发表日期2018
ISSN2169-897X
EISSN2169-8996
起始页码8047
结束页码8061
卷号123期号:15
英文摘要Loess and red clay sediments from the Chinese Loess Plateau (CLP) contain a wealth of information about variations in the Asian monsoon and the aridification history of the Asian interior. However, relatively little is known about late Pliocene palaeoenvironmental evolution and the variations in the gradients of monsoonal rainfall in the western part of the CLP, due to the poor exposure of pre-Quaternary eolian deposits and uncertainties in the interpretation of paleoclimatic proxies in most parts of the region. To address these issues, we conducted a detailed rock magnetic investigation of newly drilled eolian sequences (spanning 3.7-2.4Ma) from the Linxia Basin, NE Tibetan Plateau. Our results demonstrate that pedogenically formed fine magnetic grains are responsible for the magnetic enhancement of loess-red clay sediments from the basin. Spatially, a clear decrease in magnetic susceptibility and its frequency dependence is observed between the central and western CLP, indicating that the East Asian summer monsoon already exerted a major influence on the amount and distribution of late Pliocene rainfall in the Linxia Basin. After evaluating the validity of magneto-climofunctions, we attempt to reconstruct late Pliocene-early Pleistocene monsoonal precipitation in the NE margin of the Tibetan Plateau. The results demonstrate that the difference in late Pliocene monsoonal rainfall between the study area and Chaona in the central CLP was about 300-400mm. This value is higher than that of the present day, indicating a steepened gradient in monsoonal rainfall between the central and western CLP during the late Pliocene. Key Points
关键词RED CLAY DEPOSITSLOESS PLATEAUMAGNETIC-PROPERTIESGRAIN-SIZEPALEOCLIMATIC SIGNIFICANCEASTRONOMICAL TIMESCALEMODERN SOILSSUSCEPTIBILITYEVOLUTIONCLIMATE
语种英语
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
WOS记录号WOS:000443566900015
来源期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
来源机构中国科学院青藏高原研究所
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/259120
推荐引用方式
GB/T 7714
Zan, Jinbo,Fang, Xiaomin,Li, Xiaojing,et al. Late Pliocene Monsoonal Rainfall Gradients in Western China Recorded by the Eolian Deposits From the Linxia Basin, NE Tibetan Plateau[J]. 中国科学院青藏高原研究所,2018,123(15).
APA Zan, Jinbo,Fang, Xiaomin,Li, Xiaojing,Zhang, Weilin,Yan, Maodu,&Shen, Miaomiao.(2018).Late Pliocene Monsoonal Rainfall Gradients in Western China Recorded by the Eolian Deposits From the Linxia Basin, NE Tibetan Plateau.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(15).
MLA Zan, Jinbo,et al."Late Pliocene Monsoonal Rainfall Gradients in Western China Recorded by the Eolian Deposits From the Linxia Basin, NE Tibetan Plateau".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.15(2018).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zan, Jinbo]的文章
[Fang, Xiaomin]的文章
[Li, Xiaojing]的文章
百度学术
百度学术中相似的文章
[Zan, Jinbo]的文章
[Fang, Xiaomin]的文章
[Li, Xiaojing]的文章
必应学术
必应学术中相似的文章
[Zan, Jinbo]的文章
[Fang, Xiaomin]的文章
[Li, Xiaojing]的文章
相关权益政策
暂无数据
收藏/分享

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。