Geomagnetic paleointensity and its geodynamic significance for the last 40 ka recorded in the northwestern sub-sea basin of the South China Sea
文献类型：期刊论文
| 作者 | Wang HaoSen1; Xu Xing2; Liu QingSong1; Zhong Yi1,5; Chen Ting1; Qiang XiaoKe3 ; Chou YuMin1; Yang XiaoQiang4
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| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
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| 出版日期 | 2020-07-01 |
| 卷号 | 63期号:7页码:2671-2681 |
| ISSN号 | 0001-5733 |
| 关键词 | Northwestern sub-sea basin of the South China Sea Relative paleointensity Non-dipole field Geodynamics East Asian positive magnetic anomaly |
| DOI | 10.6038/cjg2020N0353 |
| 通讯作者 | Liu QingSong(qsliu@sustech.edu.cn) |
| 英文摘要 | Marine sediments can record relatively continuous paleomagnetic information. Normalized natural remanent magnetization (NRM) records of sediments can be used to construct continuous relative paleointensity (RPI) information of the paleomagnetic field, which facilitates studying evolution of the geomagnetic field and global record correlations. This paper investigated the gravity core L07 drilled from the northwestern sub-sea basin of the South China Sea. By using isothermal remanent magnetization (IRM) as the normalization parameter, RPI curve was constructed for the past 37 ka. Results show that the dominant magnetic minerals in the L07 are mainly (pseudo) single domain (PSD/SD) magnetite particles. In addition, RPI value maximized at 11. 5 ka. By further combining the RPI records of the Okhotsk sea core in East Asia and the abundance changes of Be-10 in China Loess, we attribute the RPI peak to the Earth's non-dipole field. Our results indicate that the influence of positive magnetic anomalies in East Asia can reach to low latitude area such as the South China Sea. This greatly improves our understanding the evolution of magnetic fields in East Asia and provides a possible mechanism for change in the millennium scale's RPI characteristics in this region. |
| WOS关键词 | NON-DIPOLE ; FIELD ; KYR ; INTENSITY ; REVERSAL ; ATLANTIC ; BE-10 ; MAP |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000550583600014 |
| 源URL | [http://ir.ieecas.cn/handle/361006/15089]  |
| 专题 | 地球环境研究所_古环境研究室 |
| 通讯作者 | Liu QingSong |
| 作者单位 | 1.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Ctr Marine Magnetism CM2, Shenzhen 518055, Peoples R China 2.Guangzhou Marine Geol Survey, Guangzhou 510760, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 4.Sun Yat Sen Univ, Dept Earth Sci, Guangzhou 510275, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang HaoSen,Xu Xing,Liu QingSong,et al. Geomagnetic paleointensity and its geodynamic significance for the last 40 ka recorded in the northwestern sub-sea basin of the South China Sea[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2020,63(7):2671-2681. |
| APA | Wang HaoSen.,Xu Xing.,Liu QingSong.,Zhong Yi.,Chen Ting.,...&Yang XiaoQiang.(2020).Geomagnetic paleointensity and its geodynamic significance for the last 40 ka recorded in the northwestern sub-sea basin of the South China Sea.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,63(7),2671-2681. |
| MLA | Wang HaoSen,et al."Geomagnetic paleointensity and its geodynamic significance for the last 40 ka recorded in the northwestern sub-sea basin of the South China Sea".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 63.7(2020):2671-2681. |
入库方式： OAI收割
来源：地球环境研究所
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