Paleosecular variations of the geomagnetic field during the Holocene from Eastern Asia

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	Paleosecular variations of the geomagnetic field during the Holocene from Eastern Asia
	Yang, Xiaoqiang; Liu, Qingsong; Yu, Kefu; Huang, Wenya; Zhu, Liyan; Zhang, Huodai; Liu, Jian; Li, JinHua
刊名	PHYSICS OF THE EARTH AND PLANETARY INTERIORS
	2016
卷号	254 页码:25-36
关键词	South China Sea Paleosecular variations Sea surface water salinity
通讯作者	Yang, XQ (reprint author), Sun Yat Sen Univ, Dept Earth Sci, Guangzhou 510275, Guangdong, Peoples R China. ; Liu, QS (reprint author), Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China.
中文摘要	High-resolution paleomagnetic secular variation (PSV) records bear great information of dynamics processes of the Earth's geomagnetic field, and can be further used for inter-profile correlation and for dating sediments. However, effects of changes in the depositional environment on PSV records have not been fully determined. This study constructed Holocene PSV records for the gravity piston core (ZSQD34) obtained from the northern South China Sea. Rock magnetic and Transmission Electron Microscope (TEM) results indicate that single (SD) and PSD domain magnetites are the main carrier of the natural remanent magnetization. Comparable to the records derived from the freshwater lakes and the modeling results, we observed that direction curves from these two environments of contrasting salinity content are rather consistent. The direction curves are independent of the constructed salinity. However, the gradual increasing trend of relative intensity since about 5 kyr might be related to the decreasing sea surface salinity. Furthermore, on the centennial and millennial time scale, the relative intensity and salinity show some positive relation, suggesting a potential contribution of salinity to the paleomagnetic relative intensity recording processes. (C) 2016 Elsevier B.V. All rights reserved.
学科主题	Geochemistry & Geophysics
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/15438]
专题	南海海洋研究所_中科院边缘海地质重点实验室
推荐引用方式 GB/T 7714	Yang, Xiaoqiang,Liu, Qingsong,Yu, Kefu,et al. Paleosecular variations of the geomagnetic field during the Holocene from Eastern Asia[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,2016,254:25-36.
APA	Yang, Xiaoqiang.,Liu, Qingsong.,Yu, Kefu.,Huang, Wenya.,Zhu, Liyan.,...&Li, JinHua.(2016).Paleosecular variations of the geomagnetic field during the Holocene from Eastern Asia.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,254,25-36.
MLA	Yang, Xiaoqiang,et al."Paleosecular variations of the geomagnetic field during the Holocene from Eastern Asia".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 254(2016):25-36.