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Loess magnetic susceptibility flux: A new proxy of East Asian monsoon precipitation

文献类型：期刊论文

作者Kong, Xianghui1,2,5; Zhou, Weijian1,2,5; Beck, J. Warren3,4; Xian, Feng1,5; Qiang, Xiaoke1,2,6; Ao, Hong1,2; Wu, Zhenkun1,5; An, Zhisheng1,2,7,8
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2020-10-01
卷号201页码:6
关键词Pedogenic magnetic susceptibility flux Chinese loess Monsoon precipitation proxy Orbital forcing
ISSN号1367-9120
DOI10.1016/j.jseaes.2020.104489
通讯作者Kong, Xianghui(kxh@ieecas.cn)
英文摘要Magnetic susceptibility (chi) of loess-paleosol sequences on the Chinese Loess Plateau (CLP) has been widely used as a proxy for East Asian summer monsoon (EASM) precipitation variability. Such records typically show strong climate forcing in the-100 ka orbital eccentricity band, but exhibit weak precessional (-23 ka) forcing relative to that seen in oxygen isotopes from marine sediments. This is puzzling as monsoons should be highly sensitive to precession variations. We assert that this lack of precessional signal is because chi is a concentration, which is strongly affected by the dilution effect of dust sedimentation rate superimposed on rainfall rate. chi-flux on the other hand corrects for dust accumulation rate and bulk density effects to better reveal pedogenic mineral ingrowth rates associated with rainfall. In this study, we compare three 600 ka records of loess pedogenic chi-flux from the CLP with Chinese speleothem delta O-18 records and a 550 ka loess-paleosol 10Be flux record from Baoji which has also been used as a monsoon precipitation proxy record. Pedogenic chi-flux exhibits clear signals of orbital precession, whereas chi (-concentration) does not.
WOS关键词CHINESE LOESS ; CLIMATE ; RECORD ; RECONSTRUCTIONS ; DEPOSITS ; PLATEAU ; BE-10
资助项目Chinese Academy of Sciences[QYZDY-SSW-DQC010] ; Chinese Academy of Sciences[XDB40010100] ; National Natural Science Foundation of China[41930321] ; U.S. National Science Foundation[EAR-0908709] ; U.S. National Science Foundation[EAR-0902633] ; U.S. National Science Foundation[EAR-0929458]
WOS研究方向Geology
语种英语
WOS记录号WOS:000568796600001
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构Chinese Academy of Sciences ; National Natural Science Foundation of China ; U.S. National Science Foundation
源URL[http://ir.ieecas.cn/handle/361006/15289]  
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Kong, Xianghui
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
3.Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
4.Univ Arizona, Dept Geosci, Tucson, AZ 85721 USA
5.Xian AMS Ctr, Shaanxi Key Lab Accelerator Mass Spectrometry & A, Xian 710061, Peoples R China
6.Qingdao Natl Lab Marine Sci & Technol, Open Studio Ocean Continental Climate & Environm, Qingdao 266061, Peoples R China
7.Beijing Normal Univ, Interdisciplinary Res Ctr Earth Sci Frontier, Beijing 100875, Peoples R China
8.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China
推荐引用方式
GB/T 7714		 Kong, Xianghui,Zhou, Weijian,Beck, J. Warren,et al. Loess magnetic susceptibility flux: A new proxy of East Asian monsoon precipitation[J]. JOURNAL OF ASIAN EARTH SCIENCES,2020,201:6.
APA Kong, Xianghui.,Zhou, Weijian.,Beck, J. Warren.,Xian, Feng.,Qiang, Xiaoke.,...&An, Zhisheng.(2020).Loess magnetic susceptibility flux: A new proxy of East Asian monsoon precipitation.JOURNAL OF ASIAN EARTH SCIENCES,201,6.
MLA Kong, Xianghui,et al."Loess magnetic susceptibility flux: A new proxy of East Asian monsoon precipitation".JOURNAL OF ASIAN EARTH SCIENCES 201(2020):6.

入库方式： OAI收割

来源：地球环境研究所

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