Globally strong geomagnetic field intensity circa 3000 years ago SCIE SCOPUS

Cited 28 time in WEB OF SCIENCE Cited 28 time in Scopus
Title
Globally strong geomagnetic field intensity circa 3000 years ago
Author(s)
Hong, Hoabin; Yu, Yongjae; Lee, Chan Hee; Kim, Ran Hee; Park, Jingyu; Doh, Seong-Jae; Kim, Wonnyon; Sung, Hyongmi
KIOST Author(s)
Kim, Won Nyon(김원년)
Publication Year
2013-12-01
Abstract
High-fidelity geomagnetic field intensity determination was carried out using 191 baked fragments collected from 20 kilns or hearths with ages ranging between similar to 1200 BC and similar to AD 1725 in South Korea. Geomagnetic field intensity variation displayed three narrow minima at similar to 800-700 BC, similar to AD 700, and similar to AD 1600 and two maxima at similar to 1200-1100 BC and similar to AD 1000-1100. In most time intervals, virtual axial dipole moment (VADM) variation is confined within 20% of the present VADM. However, geomagnetic field intensity circa 3000 yr ago is nearly 40% larger than the present value. Such high VADMs circa 3000 yr ago are in phase with those in other longitudinal bands in northern hemisphere centered at 5E (France), 30E (the Middle East) and 200E (Hawaii). Although strong geomagnetic field intensity circa 3000 yr ago is globally synchronous, the highest VADM occurs at slightly different time intervals in different locations. Hence it is possible that the globally strong geomagnetic field intensity circa 3000 yr ago reflects the migration of persistent hemispheric flux in northern hemisphere or an episode of geomagnetic field hemispheric asymmetry. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
ISSN
0012-821X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3043
DOI
10.1016/j.epsl.2013.09.043
Bibliographic Citation
EARTH AND PLANETARY SCIENCE LETTERS, v.383, pp.142 - 152, 2013
Publisher
ELSEVIER SCIENCE BV
Subject
EARTHS MAGNETIC-FIELD; PAST 7 MILLENNIA; SECULAR VARIATION; WESTERN-EUROPE; PALEOINTENSITY METHODS; CHINESE CERAMICS; LAVA FLOWS; ARCHAEOMAGNETIC JERKS; ARCHEOINTENSITY DATA; DIPOLE-MOMENT
Keywords
strong geomagnetic field intensity; archeomagnetism; paleointensity; secular variation; dipolar field; non-dipolar field
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER SCIENCE BV
Related Researcher
Research Interests

Paleomagnetism,Environmental Science,Geology,고지자기,환경과학,지질학

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