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, Ling1,5,6,7; Zhou, Weijian1,5,6; Wang, Xisheng4; Xian, Feng1,5,6; Du, Yajuan1,5,6; Zhou, Jie1,5,6; Chu, Guoqiang2,3; Zhao, Guoqing1,5,6; Zhang, Li1,5,6 |
| 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 |
| DOI | 10.1029/2019GL082863 |
| 通讯作者 | Zhou, Weijian(weijian@loess.llqg.ac.cn) ; Wang, Xisheng(xishengwang@yahoo.com) |
| 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 |
| 源URL | [http://ir.ieecas.cn/handle/361006/12776]  |
| 专题 | 地球环境研究所_加速器质谱中心 |
| 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.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 4.Chinese Acad Geol Sci, Inst Geomech, MNR Key Lab Paleomagnetism & Paleotecton Reconstr, Beijing, Peoples R China 5.Xi An Jiao Tong Univ, Xian, Shaanxi, Peoples R China 6.Xian AMS Ctr IEECAS, Shaanxi Key Lab Accelerator Mass Spectrometry Tec, Xian, Shaanxi, Peoples R China 7.Univ Chinese Acad Sci, 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. |
入库方式： OAI收割
来源：地球环境研究所
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