On the possible occurrence of 'archaeomagnetic jerks' in the geomagnetic field over the past three millennia

被引:116
作者
Gallet, Y
Genevey, A
Courtillot, V
机构
[1] Inst Phys Globe, Lab Paleomagnetisme, UMR 7577, F-75252 Paris 05, France
[2] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA
关键词
archaeomagnetism; secular variation; jerks; western Europe; Middle East;
D O I
10.1016/S0012-821X(03)00362-5
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Archaeomagnetism can provide a high-resolution full-vector description of the Earth's magnetic field for the past several thousand years. We analyse the bulk of archaeomagnetic data (both direction and intensity) obtained recently in Western Europe and the Eastern Mediterranean covering the past three millennia. We demonstrate a remarkable coincidence between sharp cusps in geomagnetic field direction and intensity maxima (two clear ones at similar toAD 200 and 1400; two presently less well constrained at similar to800 BC and AD 800). These sharp changes may constitute a new feature of geomagnetic secular variation ('archaeomagnetic jerks') with time characteristics intermediate between 'geomagnetic jerks' and 'magnetic excursions'. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:237 / 242
页数:6
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