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  2. 地质与地球物理研究所
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  4. 中国科学院新生代地质与环境重点实验室
Multidecadal- to Centennial-Scale Be-10 Variations in Holocene Sediments of Huguangyan Maar Lake, South China

文献类型：期刊论文

作者Tang, Ling1,2,3,4; Zhou, Weijian1,3,4; Wang, Xisheng5; Xian, Feng1,3,4; Du, Yajuan1,3,4; Zhou, Jie1,3,4; Chu, Guoqiang6,7; Zhao, Guoqing1,3,4; Zhang, Li1,3,4
刊名GEOPHYSICAL RESEARCH LETTERS
出版日期2019-07-16
卷号46期号:13页码:7634-7642
ISSN号0094-8276
DOI10.1029/2019GL082863
英文摘要We report a new high-resolution Holocene Be-10 record from Huguangyan Maar Lake in subtropical-tropical South China, aimed to detect the atmospheric Be-10 production signal in low-latitude regions. After minimizing climatic effects by regression analyses between Be-10 concentration and climatic proxies from the same archive, we successfully distinguished variations in geomagnetic field intensity and solar activity using 2,000-year low-and high-pass filtering, respectively, of the residual Be-10 record (a proxy of the atmospheric Be-10 production rate). The resulting Be-10-derived record of geomagnetic field intensity is generally comparable with geomagnetic models, and the solar-modulated Be-10 signal shows significant correlations with solar activity proxies. The preservation of Be-10 production signal in the sediments of this low-latitude maar lake highlights the largely unexplored potential as well as limitations of Be-10 as a tool to reconstruct variations in solar activity and geomagnetic field intensity. Plain Language Summary The atmospheric production rate of cosmogenic Be-10 depends on the cosmic ray flux penetrating the atmosphere, a process that is mainly controlled by the geomagnetic field strength and solar activity. The geomagnetic imprint on Be-10 has been well established in previous studies of ice cores and marine sediments. The relationship between solar activity and Be-10 has also been studied in ice cores and high-latitude lakes. Here we for the first time present a high-resolution Be-10 record from Huguangyan Maar Lake in subtropical-tropical South China over the Holocene. We successfully separated the atmospheric Be-10 production signal from climatic effects that contribute to up to similar to 52% of the variance in Be-10 concentration. After eliminating the climatic effects, variations in both geomagnetic field intensity and solar activity signals were reconstructed from the residual Be-10 record, using 2,000-year low pass, and high-pass filtering, respectively. The geomagnetic-and solar-modulated Be-10 production signals are evaluated by comparisons with independent records. This result unambiguously indicates that the Be-10-derived solar activity signal at a low-latitude subtropical site can be obtained, even when the Be-10 signal is dominated by regional climate, in our case, accounting for up to similar to 65% of the variance in the record during the early-middle Holocene.
WOS关键词GEOMAGNETIC-FIELD INTENSITY ; COSMOGENIC NUCLIDE PRODUCTION ; HIGH-RESOLUTION RECORD ; EARTHS MAGNETIC-FIELD ; SOLAR-ACTIVITY ; DIPOLE-MOMENT ; LACUSTRINE SEDIMENTS ; SECULAR VARIATION ; BERYLLIUM 10 ; ICE CORES
资助项目Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-DQC010] ; MOST special fund for State Key Laboratory of Loess and Quaternary Geology ; NSFC[41672178] ; China Geological Survey[DD20160306]
WOS研究方向Geology
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000476960100064
资助机构Key Research Program of Frontier Sciences, CAS ; MOST special fund for State Key Laboratory of Loess and Quaternary Geology ; NSFC ; China Geological Survey ; Key Research Program of Frontier Sciences, CAS ; MOST special fund for State Key Laboratory of Loess and Quaternary Geology ; NSFC ; China Geological Survey ; Key Research Program of Frontier Sciences, CAS ; MOST special fund for State Key Laboratory of Loess and Quaternary Geology ; NSFC ; China Geological Survey ; Key Research Program of Frontier Sciences, CAS ; MOST special fund for State Key Laboratory of Loess and Quaternary Geology ; NSFC ; China Geological Survey
源URL[http://ir.iggcas.ac.cn/handle/132A11/92930]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Zhou, Weijian; Wang, Xisheng
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Xian AMS Ctr IEECAS, Shaanxi Key Lab Accelerator Mass Spectrometry Tec, Xian, Shaanxi, Peoples R China
4.Xi An Jiao Tong Univ, Xian, Shaanxi, Peoples R China
5.Chinese Acad Geol Sci, Inst Geomech, MNR Key Lab Paleomagnetism & Paleotecton Reconstr, Beijing, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
7.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Tang, Ling,Zhou, Weijian,Wang, Xisheng,et al. Multidecadal- to Centennial-Scale Be-10 Variations in Holocene Sediments of Huguangyan Maar Lake, South China[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(13):7634-7642.
APA Tang, Ling.,Zhou, Weijian.,Wang, Xisheng.,Xian, Feng.,Du, Yajuan.,...&Zhang, Li.(2019).Multidecadal- to Centennial-Scale Be-10 Variations in Holocene Sediments of Huguangyan Maar Lake, South China.GEOPHYSICAL RESEARCH LETTERS,46(13),7634-7642.
MLA Tang, Ling,et al."Multidecadal- to Centennial-Scale Be-10 Variations in Holocene Sediments of Huguangyan Maar Lake, South China".GEOPHYSICAL RESEARCH LETTERS 46.13(2019):7634-7642.

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来源：地质与地球物理研究所

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