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The Early-Middle Pleistocene transition of Asian summer monsoon

文献类型：期刊论文

作者Peng, Xianzhe2,3; Ao, Hong2,3,4,5; Xiao, Guoqiao2; Qiang, Xiaoke3,4; Sun, Qiang1
刊名PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
出版日期2020-05-01
卷号545页码:7
关键词Chinese Loess Plateau Magnetic susceptibility Sea Surface Temperature Eccentricity Obliquity
ISSN号0031-0182
DOI10.1016/j.palaeo.2020.109636
通讯作者Ao, Hong(aohong@ieecas.cn)
英文摘要The global climate cyclicity transferred from an Early Pleistocene mode dominated by the obliquity periodicity to a new Middle Pleistocene state dominated by the eccentricity periodicity in the absence of any significant changes in orbital forcing, known as the Early-Middle Pleistocene transition (EMPT), is an unresolved issue of Milankovitch orbital theory. Here we contribute new insights into the orbital characteristic and dynamics of the Asian summer monsoon precipitation changes across the EMPT. Spectral analyses of precipitation over the past 1.6 Myr reconstructed from a new loess magnetic susceptibility (chi) stack suggest that the EMPT of the summer monsoon precipitation characterized by a shift from obliquity to eccentricity rhythm occurred over a similar to 640 kyr long-term period from similar to 1.24 to 0.6 Ma rather than quasi-instantaneously on a much shorter duration. The eccentricity cyclicity initiated as early as 1.24 Ma, subsequently intensified and became the dominated pacing from 1.1 Ma, while obliquity weakened at similar to 1.1 Ma and significantly weakened at similar to 0.7 Ma. These EMPT characteristics of the summer monsoon precipitation reflect complex impacts from global climate systems and regional climate changes in the Northern and Southern Hemispheres, and in both low- and high-latitude regions.
WOS关键词CHINESE LOESS ; MAGNETIC-SUSCEPTIBILITY ; ICE VOLUME ; ASTRONOMICAL TIMESCALE ; OCEAN TEMPERATURE ; NORTH-ATLANTIC ; MODERN SOILS ; CLIMATE ; EVOLUTION ; TIME
资助项目Second Tibetan Plateau Scientific Expedition and Research (STEP) program[2019QZKK0707] ; Key Research Program of Frontier Sciences, the Chinese Academy of Sciences[QYZDB-SSW-DQC021] ; Key Research Program of Frontier Sciences, the Chinese Academy of Sciences[QYZDY-SSWDQC001]
WOS研究方向Physical Geography ; Geology ; Paleontology
语种英语
WOS记录号WOS:000526825900003
出版者ELSEVIER
资助机构Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Key Research Program of Frontier Sciences, the Chinese Academy of Sciences
源URL[http://ir.ieecas.cn/handle/361006/12600]  
专题地球环境研究所_古环境研究室
第四纪科学与全球变化卓越创新中心
通讯作者Ao, Hong
作者单位1.Xian Univ Sci & Technol, Coll Geol & Environm, Xian 710054, Peoples R China
2.China Univ Geosci, Sch Geog & Informat Engn, Wuhan 430074, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
5.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Ocean Continental Climate & Environm, Qingdao 266061, Peoples R China
推荐引用方式
GB/T 7714		 Peng, Xianzhe,Ao, Hong,Xiao, Guoqiao,et al. The Early-Middle Pleistocene transition of Asian summer monsoon[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,545:7.
APA Peng, Xianzhe,Ao, Hong,Xiao, Guoqiao,Qiang, Xiaoke,&Sun, Qiang.(2020).The Early-Middle Pleistocene transition of Asian summer monsoon.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,545,7.
MLA Peng, Xianzhe,et al."The Early-Middle Pleistocene transition of Asian summer monsoon".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 545(2020):7.

入库方式： OAI收割

来源：地球环境研究所

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