Japan Geoscience Union Meeting 2016

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International Session (Oral)

Symbol S (Solid Earth Sciences) » S-EM Earth's Electromagnetism

[S-EM05] Full vector geomagnetic and paleomagnetic secular variation: direction, intensity and dynamo simulations

Sun. May 22, 2016 9:00 AM - 10:30 AM 105 (1F)

Convener:*Hidetoshi Shibuya(Department of Earth and Environmental Sciences, Graduate School of Science and Technology, Kumamoto University), Yuhji Yamamoto(Center for Advanced Marine Core Research, Kochi University), Greig Paterson(Institute of Geology and Geophysics Chinese Academy of Sciences), Maxwell Brown(GFZ German Research Centre for Geosciences), Chair:Greig A Paterson(Institute of Geology and Geophysics, Chinese Academy of Sciences), Yuhji Yamamoto(Center for Advanced Marine Core Research, Kochi University), Koji Fukuma(Department of Environmental System Science, Faculty of Science and Engineering, Doshisha University)

10:10 AM - 10:25 AM

[SEM05-05] Archaeomagnetism in Japan: a historical review and new perspectives

*Tadahiro Hatakeyama1, Hidetoshi Shibuya2 (1.Information Processing Center, Okayama University of Science, 2.Department of Earth and Environmental Sciences, Graduate School of Science and Technology, Kumamoto University)

Keywords:Archaeomagnetism, Paleomagnetism, Geomagnetic Secular Variation, Geochronology

Archaeomagnetism, a branch of paleomagnetism aimed at archaeological relics and antiquities, provides the highest-precision geomagnetic data in all paleomagnetic targets. In Japan, researches of archaeomagnetism for paleodirection and paleointensity would begin in 1940s and have achieved a certain goal in 1970s and 1980s. Although for a quarter century after that a lot of measurements of archaeomagnetic direction have been conducted to give date estimates to few thousand baked earth sites such as old kilns, archaeomagnetic results in Japan brought out almost no new contribution and feedback to geomagnetic secular variation study. Here we refer the history and the current status of archaeomagnetism in Japan, and we also introduce our recent efforts to build a new archaeomagnetic database and secular variation curve in Japan and recent measurements carried out by the Japanese paleomagnetic community.