Archeomagnetic secular variation from Korea: Implication for the occurrence of global archeomagnetic jerks

Yongjae Yu, Seong-Jae Doh, Wonnyon Kim, Yong Hee Park, Hong Jong Lee, Youngjin Yim, Sang Gi Cho, Youn Suk Oh, Dong Sung Lee, Ho Hyeong Lee, Min Gyu Gong, Dae Hwan Hyun, Jae Kyoung Cho, Yeun Sik Sin, Moon Sun Do

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13 Citations (Scopus)

Abstract

An archeomagnetic paleosecular variation (PSV) was first defined in Korea using baked materials collected from 26 kilns or hearths with ages ranging from ~ 1100 BC to AD 1790. Variations of geomagnetic declination and inclination from the Korean peninsula are distinctively different from the prediction of a global model (CALS3k.3 or CALS7K.2) for the past 3500. yr. In particular, a distinctive offset in magnitude and phase is noticeable between the observations and predictions at ~ 745 BC, ~ AD 300, and ~ AD 1400-1700. A bi-plot of magnetic declination versus inclination displays three cusps at the corresponding time intervals. These time intervals are nearly identical to or at least overlap with three of the four potential archeomagnetic jerks suggested by Gallet et al. (2003) from the European archeomagnetic data. A comparison of the PSV curves for neighboring countries/regions revealed that European archeomagnetic jerks at ~ 800 BC, ~ AD 200, ~ AD 800, and ~ AD 1400 were all preserved in East Asia, suggesting that the archeomagnetic jerks were global (or at least northern hemispheric) features.

Original languageEnglish
Pages (from-to)173-181
Number of pages9
JournalEarth and Planetary Science Letters
Volume294
Issue number1-2
DOIs
Publication statusPublished - 2010 May 1

Keywords

  • Archeomagnetic jerk
  • Archeomagnetism
  • Geomagnetic field
  • Geomagnetic jerk
  • Secular variation

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science

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    Yu, Y., Doh, S-J., Kim, W., Park, Y. H., Lee, H. J., Yim, Y., Cho, S. G., Oh, Y. S., Lee, D. S., Lee, H. H., Gong, M. G., Hyun, D. H., Cho, J. K., Sin, Y. S., & Do, M. S. (2010). Archeomagnetic secular variation from Korea: Implication for the occurrence of global archeomagnetic jerks. Earth and Planetary Science Letters, 294(1-2), 173-181. https://doi.org/10.1016/j.epsl.2010.03.024