globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2020.116732
论文题名:
Geomagnetic field intensity changes in the Central Mediterranean between 1500 BCE and 150 CE: Implications for the Levantine Iron Age Anomaly evolution
作者: Rivero-Montero M.; Gómez-Paccard M.; Kondopoulou D.; Tema E.; Pavón-Carrasco F.J.; Aidona E.; Campuzano S.A.; Molina-Cardín A.; Osete M.L.; Palencia-Ortas A.; Martín-Hernández F.; Rubat-Borel F.; Venturino M.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2021
卷: 557
语种: 英语
中文关键词: archeointensity ; archeomagnetism ; dipole moment ; Levantine Iron Age Anomaly ; spikes
英文关键词: Iron ; Archeointensity data ; Archeological sites ; Central Mediterranean ; Geomagnetic fields ; Intensity features ; Paleo-intensities ; Temporal and spatial ; Thermoremanent magnetization ; Geomagnetism ; geomagnetic field ; Iron Age ; magnetization ; paleointensity ; paleomagnetism ; Canary Islands ; Spain ; Elliptio dilatata ; Meleagris gallopavo ; Serinus canaria
英文摘要: The magnitude and origin of the Levantine Iron Age geomagnetic Anomaly (LIAA), which spanned the first half of the first millennium before the common era, are not yet well understood. Recent archeomagnetic studies from the Levant and Western Europe suggest a western drift of this feature, stressing the importance of investigating the temporal and spatial behaviour of this event over the Central Mediterranean area. To analyse this issue, we here present 37 new archeointensity data obtained from the archeomagnetic study of 118 ceramics and brick fragments collected in 8 archeological sites in Greece and Italy with ages ranging between 1500 BCE and 150 CE. The samples were analysed using the classical Thellier and Thellier method for paleointensity determination, including the correction for the anisotropy effect of the thermoremanent magnetization (TRM) and for the cooling rate dependence upon TRM acquisition. The results reveal the first evidence of a high-intensity peak in Greece between 1070 and 1040 BCE associated to high virtual axial dipole moment (VADM) values of around 140 ZAm2. A global analysis of available paleointensities suggests that the origin of these high values is the same to the one which produced the maximum VADM of the LIAA in the Levantine region. Our results suggest that the source of the LIAA is located in the Levantine region vanishing to the north, to the west and to the east where lower VADMs are observed. In addition, another high intensity maximum, less pronounced than the one of the LIAA, seems to be present around 500 BCE all over Europe, from the Canary Islands to Turkey showing similar VADM values (around 150 ZAm2) in the different regions. Both events seem to span over a large region at the Earth's surface covering more than 60° of longitude, verifying an Earth's outer core origin for these intensity features. © 2020 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165648
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作者单位: Instituto de Geociencias IGEO (CSIC-UCM), Ciudad Universitaria, c/Doctor Severo Ochoa, 7, Edificio Entrepabellones 7 y 8, Madrid, 28040, Spain; Aristotle University of Thessaloniki, Department of Geophysics, School of Geology, Thessaloniki, 54124, Greece; Università degli Studi di Torino, Dipartimento di Scienze della Terra, Via Valperga Caluso 35, Torino, 10125, Italy; Alpine Laboratory of Paleomagnetism ALP-CIMaN, Via G.U. Massa 6, Peveragno, 12016, Italy; Facultad de CC. Físicas, Dpto. de Física de la Tierra y Astrofísica, Universidad Complutense de Madrid, Avd. Complutense s/n, Madrid, 28040, Spain; Soprintendenza Archeologia Belle Arti e Paesaggio per la Città Metropolitana di Torino, Piazza San Giovanni 2, Torino, 10095, Italy; Soprintendenza Archeologia Belle arti e Paesaggio per le province di Alessandria, Asti e Cuneo, Via Pavia, Alessandria, 15121, Italy

Recommended Citation:
Rivero-Montero M.,Gómez-Paccard M.,Kondopoulou D.,et al. Geomagnetic field intensity changes in the Central Mediterranean between 1500 BCE and 150 CE: Implications for the Levantine Iron Age Anomaly evolution[J]. Earth and Planetary Science Letters,2021-01-01,557
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