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Late Miocene-Pliocene Asian monsoon intensification linked to Antarctic ice-sheet growth
Ao, Hong1; Roberts, Andrew P.2; Dekkers, Mark J.3; Liu, Xiaodong1; Rohling, Eelco J.2,4; Shi, Zhengguo1; An, Zhisheng1; Zhao, Xiang2
2016-06-15
Source PublicationEARTH AND PLANETARY SCIENCE LETTERS
Volume444Issue:2016Pages:75-87
SubtypeArticle
AbstractEnvironmental conditions in one of Earth's most densely populated regions, East Asia, are dominated by the monsoon. While Quaternary monsoon variability is reasonably well understood, pre-Quaternary monsoon variability and dynamics remain enigmatic. In particular, little is known about potential relationships between northern hemispheric monsoon response and major Cenozoic changes in Antarctic ice cover. Here we document long-term East Asian summer monsoon (EASM) intensification through the Late Miocene-Pliocene (similar to 8.2 to 2.6 Ma), and attribute this to progressive Antarctic glaciation. Our new high-resolution magnetic records of long-term EASM intensification come from the Late Miocene-Pliocene Red Clay sequence on the Chinese Loess Plateau; we identify underlying mechanisms using a numerical climate-model simulation of EASM response to an idealized stepwise increase in Antarctic ice volume. We infer that progressive Antarctic glaciation caused intensification of the cross-equatorial pressure gradient between an atmospheric high-pressure cell over Australia and a low-pressure cell over mid-latitude East Asia, as well as intensification of the cross-equatorial sea-surface temperature (SST) gradient. These combined atmospheric and oceanic adjustments led to EASM intensification. Our findings offer a new and more global perspective on the controls behind long-term Asian monsoon evolution. (C) 2016 Elsevier B.V. All rights reserved.
KeywordEnvironmental Magnetism East Asian Monsoon Chinese Loess Plateau Red Clay Late Miocene-pliocene Antarctic Glaciation
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.epsl.2016.03.028
WOS KeywordCHINESE LOESS PLATEAU ; REVERSAL CURVE DIAGRAMS ; LATE CENOZOIC UPLIFT ; RED-CLAY SEQUENCE ; TIBETAN PLATEAU ; MAGNETIC-SUSCEPTIBILITY ; PALEOCLIMATIC SIGNIFICANCE ; ENVIRONMENTAL MAGNETISM ; EOLIAN SEDIMENTS ; CLIMATE-CHANGE
Indexed BySCI
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000375818800008
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Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5783
Collection古环境研究室
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Australian Natl Univ, Res Sch Earth Sci, GPO Box 4, Canberra, ACT 2601, Australia
3.Univ Utrecht, Fac Geosci, Dept Earth Sci, Paleomagnet Lab Ft Hoofddijk, Budapestlaan 17, NL-3584 CD Utrecht, Netherlands
4.Univ Southampton, Natl Oceanog Ctr, Ocean & Earth Sci, Southampton SO14 3ZH, Hants, England
Recommended Citation
GB/T 7714
Ao, Hong,Roberts, Andrew P.,Dekkers, Mark J.,et al. Late Miocene-Pliocene Asian monsoon intensification linked to Antarctic ice-sheet growth[J]. EARTH AND PLANETARY SCIENCE LETTERS,2016,444(2016):75-87.
APA Ao, Hong.,Roberts, Andrew P..,Dekkers, Mark J..,Liu, Xiaodong.,Rohling, Eelco J..,...&Zhao, Xiang.(2016).Late Miocene-Pliocene Asian monsoon intensification linked to Antarctic ice-sheet growth.EARTH AND PLANETARY SCIENCE LETTERS,444(2016),75-87.
MLA Ao, Hong,et al."Late Miocene-Pliocene Asian monsoon intensification linked to Antarctic ice-sheet growth".EARTH AND PLANETARY SCIENCE LETTERS 444.2016(2016):75-87.
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