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Synchronicity of Kuroshio Current and climate system variability since the Last Glacial Maximum
Zheng, Xufeng1; Li, Anchun2; Kao, ShuhJi3; Gong, Xun4; Frank, Martin5; Kuhn, Gerhard4; Cai, Wenju6; Yan, Hong7; Wan, Shiming2; Zhang, Honghai8; Jiang, Fuqing2; Hathorne, Edmund4; Chen, Zhong1; Hu, Bangqi9
AbstractThe Kuroshio Current (ICC) is the northward branch of the North Pacific subtropical gyre (NPG) and exerts influence on the exchange of physical, chemical, and biological properties of downstream regions in the Pacific Ocean. Resolving long-term changes in the flow of the KC water masses is, therefore, crucial for advancing our understanding of the Pacific's role in global ocean and climate variability. Here, we reconstruct changes in ICC dynamics over the past 20 ka based on grain-size spectra, clay mineral, and Sr-Nd isotope constraints of sediments from the northern Okinawa Trough. Combined with published sediment records surrounding the NPG, we suggest that the KC remained in the Okinawa Trough throughout the Last Glacial Maximum. Together with Earth-System-Model simulations, our results additionally indicate that ICC intensified considerably during the early Holocene (EH). The synchronous establishment of the ICC "water barrier" and the modern circulation pattern during the EH highstand shaped the sediment transport patterns. This is ascribed to the precession-induced increase in the occurrence of La Nina-like state and the strength of the East Asian summer monsoon. The synchronicity of the shifts in the intensity of the KC, Kuroshio extension, and El Nino/La Nina-Southern Oscillation (ENSO) variability may further indicate that the western branch of the NPG has been subject to basin-scale changes in wind stress curl over the North Pacific in response to low-latitude insolation. Superimposed on this long-term trend are high-amplitude, large century, and millennial-scale variations during last 5 ka, which are ascribed to the advent of modern ENSO when the equatorial oceans experienced stronger insolation during the boreal winter. (C) 2016 Elsevier B.V. All rights reserved.
KeywordKuroshio Current North Pacific Subtropical Gyre Enso Monsoon Precession
Indexed BySCI
WOS IDWOS:000383005800024
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Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, 7 Nanhai Rd, Qingdao 266071, Peoples R China
3.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Peoples R China
4.Helmholtz Zentrum Polar & Meeresforsch, Alfred Wegener Inst, Alten Hafen 26, D-27568 Bremerhaven, Germany
5.GEOMAR Helmholtz Ctr Ocean Res Kiel, Kiel, Germany
6.CSIRO Oceans & Atmosphere Flagship, Aspendale, Vic 3195, Australia
7.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China
8.Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA
9.Minist Land & Resources, Qingdao Inst Marine Geol, Key Lab Marine Hydrocarbon Resources & Environm G, Qingdao 266071, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
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GB/T 7714
Zheng, Xufeng,Li, Anchun,Kao, ShuhJi,et al. Synchronicity of Kuroshio Current and climate system variability since the Last Glacial Maximum[J]. EARTH AND PLANETARY SCIENCE LETTERS,2016,452:247-257.
APA Zheng, Xufeng.,Li, Anchun.,Kao, ShuhJi.,Gong, Xun.,Frank, Martin.,...&Hu, Bangqi.(2016).Synchronicity of Kuroshio Current and climate system variability since the Last Glacial Maximum.EARTH AND PLANETARY SCIENCE LETTERS,452,247-257.
MLA Zheng, Xufeng,et al."Synchronicity of Kuroshio Current and climate system variability since the Last Glacial Maximum".EARTH AND PLANETARY SCIENCE LETTERS 452(2016):247-257.
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