气候变化领域集成服务门户(CCPortal): A refined age calibrated paleosecular variation and relative paleointensity stack for the NW Barents Sea: Implication for geomagnetic field behavior during the Holocene

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DOI	10.1016/j.quascirev.2019.106133
	A refined age calibrated paleosecular variation and relative paleointensity stack for the NW Barents Sea: Implication for geomagnetic field behavior during the Holocene
	Caricchi C.; Sagnotti L.; Campuzano S.A.; Lucchi R.G.; Macrì P.; Rebesco M.; Camerlenghi A.
发表日期	2020
ISSN	0277-3791
卷号	229
英文摘要	Reconstruction of Paleomagnetic Secular Variation (PSV) of the geomagnetic field is fundamental both to assess geodynamo models and to obtain age constraints for rocks, sediments and archaeological material. We present refined age-calibrated Holocene PSV and relative paleointensity (RPI) stack curves derived from Arctic marine sediments (Northwestern Barents Sea). The Holocene sections of four sedimentary cores were correlated on the basis of paleomagnetic trends and age models, and stacked. The resultant composite PSV and RPI Holocene records (NBS stack) and the reconstructed Holocene Virtual Geomagnetic Pole (VGP) path were evaluated in comparison with the most recent paleomagnetic stack curves and geomagnetic field models. The data indicate that during the Holocene time, the VGPs moved within the superficial projection of the inner core tangent cylinder, with the exception of short time intervals around 5600 and 3200 cal yr BP when VGPs extended to lower latitudes. These deviations might reflect regional geomagnetic features, such as persistent geomagnetic flux lobes at core-mantle boundary. Our data confirm that the large VGP shift observed around 5600 cal yr BP is the result of an increased radial magnetic field at the core-mantle boundary over North America, whilst the VGP shift around 3200 cal yr BP represents a major swing to middle latitudes toward the Middle East and might be associated to a regional high paleointensity peak, known as Levantine Iron Age Anomaly (LIAA). © 2019 Elsevier Ltd
英文关键词	Arctic region; Barents Sea; Geomagnetic paleosecular variation; Holocene; Marine sediment cores; Paleomagnetism; Relative paleointensity
语种	英语
scopus关键词	Sediments; Submarine geology; Arctic regions; Barents sea; Holocenes; Marine sediments; Paleomagnetism; Paleosecular variations; Relative paleointensity; Geomagnetism; age determination; calibration; core-mantle boundary; geodynamo; geomagnetic field; geomagnetism; Holocene; marine sediment; paleoenvironment; paleointensity; paleomagnetism; sediment core; Arctic Ocean; Barents Sea; Middle East; North America
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151617
作者单位	Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, Roma, I-00143, Italy; Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), Borgo Grotta Gigante 42/c, Sgonico, TS I-34010, Italy
推荐引用方式 GB/T 7714	Caricchi C.,Sagnotti L.,Campuzano S.A.,et al. A refined age calibrated paleosecular variation and relative paleointensity stack for the NW Barents Sea: Implication for geomagnetic field behavior during the Holocene[J],2020,229.
APA	Caricchi C..,Sagnotti L..,Campuzano S.A..,Lucchi R.G..,Macrì P..,...&Camerlenghi A..(2020).A refined age calibrated paleosecular variation and relative paleointensity stack for the NW Barents Sea: Implication for geomagnetic field behavior during the Holocene.Quaternary Science Reviews,229.
MLA	Caricchi C.,et al."A refined age calibrated paleosecular variation and relative paleointensity stack for the NW Barents Sea: Implication for geomagnetic field behavior during the Holocene".Quaternary Science Reviews 229(2020).