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DOI	10.1016/j.palaeo.2020.109596
	Records of the Mid-Brunhes Event in Chinese loess-paleosol sequences
	Xu X.; Qiang X.; Hu S.; Zhao H.; Fu C.; Zhao Q.
发表日期	2020
ISSN	0031-0182
卷号	543
英文摘要	The Mid-Brunhes Event (MBE) was a climatic transition characterized by warmer temperatures, smaller ice volume and higher sea levels during interglacials since marine oxygen isotope stage (MIS) 11. Data from numerous long-term sedimentary sequences indicate that the MBE was expressed throughout the whole earth surface; however, conflicting evidence in terrestrial sequences from middle/high latitudes of the Northern Hemisphere mean that the event's existence and global synchronicity are a matter of debate. To address this problem, we investigated the MBE signal in paleoclimate records from the Chinese Loess Plateau (CLP). Higher magnetic susceptibility (χ) since S5 in the Luochuan, Yimaguan, and Lingtai sections, and since S4 in the Jingyuan and Xijin sections indicate that East Asian Summer Monsoon (EASM) precipitation strongly affected the central CLP since MIS 13, but exerts a relatively weak influence on the northwestern CLP until MIS 11 during the past 800 kyr. From MIS 13 to MIS 11, shrinkage of the Northern Hemisphere ice sheet resulted in northward movement of the Intertropical Convergence Zone and elevated sea-level. An ~25 m sea-level rise could have caused the coastline of the Asian continent to shift northwestward by ~50–100 km. These changes induced extension of EASM-domain areas into the northwestern CLP from the central CLP. The response to the MBE in loess-paleosol sequence of the CLP was expressed by variations in the geographic extent of EASM-domain areas, rather than changes in the EASM intensity. The MBE emerged at MIS 11 in the CLP, and was globally synchronous. © 2020 Elsevier B.V.
英文关键词	Chinese Loess Plateau; East Asian Summer Monsoon; Monsoon domain areas; Sea level change
语种	英语
scopus关键词	historical record; ice sheet; intertropical convergence zone; loess; magnetic susceptibility; marine isotope stage; monsoon; Northern Hemisphere; oxygen isotope; paleoclimate; paleosol; sea level; sea level change; sedimentary sequence; China; Gansu; Lingtai; Loess Plateau; Luochuan; Shaanxi
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150591
作者单位	Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Northwest University, Xi'an, 710127, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China; Key Laboratory of Western Mineral Resources and Geological Engineering, Ministry of Education of China, Chang'an University, Xi'an, 710054, China; School of Cyberspace Security, Xi'an University of Posts & Telecommunications, Xi'an, 710121, China
推荐引用方式 GB/T 7714	Xu X.,Qiang X.,Hu S.,et al. Records of the Mid-Brunhes Event in Chinese loess-paleosol sequences[J],2020,543.
APA	Xu X.,Qiang X.,Hu S.,Zhao H.,Fu C.,&Zhao Q..(2020).Records of the Mid-Brunhes Event in Chinese loess-paleosol sequences.Palaeogeography, Palaeoclimatology, Palaeoecology,543.
MLA	Xu X.,et al."Records of the Mid-Brunhes Event in Chinese loess-paleosol sequences".Palaeogeography, Palaeoclimatology, Palaeoecology 543(2020).