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)

One of the most important connections between the true behavior of the geomagnetic field and the results of numerical dynamo simulations is the characterization of paleomagnetic secular variation. Recent developments in paleointensity and directional studies using archeological objects, volcanic rocks, as well as sediment cores, have enabled the construction of several temporally continuous global paleosecular variation models. However, the spatial and temporal distribution of data is uneven, and the relationship between sedimentary DRM/pDRM data and volcanic or archeological TRM data is not well understood. We solicit contributions on secular variation studies of both direction and intensity, novel methods for their determination, and analyses comparing secular variation from different regions. Numerical dynamo simulation studies exploring the connection between paleomagnetic secular variation and output from dynamo models are also greatly welcome.

9:20 AM - 9:40 AM

[SEM05-02] New Palaeosecular Variation Master Records for New Zealand – Applications for Dating and Field Modelling

★Invited papers

*Gillian M Turner1, Gino de Gelder2, Jamie Howarth3, Annika Greve1, Rimpy Kinger1, Ruth Corkill1, Andreas Nilsson4, Sean Fitzsimons5 (1.Victoria University of Wellington, New Zealand, 2.Institut de Physique du Globe, Paris, 3.Geological and Nuclear Sciences, New Zealand, 4.Lund University, Sweden, 5.Otago University, New Zealand)

9:55 AM - 10:10 AM

[SEM05-04] Paleomagnetic secular variation of deep-sea sediment in Northeast Japan: challenge of dating of sedimentary sequence below CCD for paleoseismology in the rupture zone of 2011 Tohoku-oki earthquake

*Toshiya Kanamatsu1, Kazuko Usami2, Cecilia McHugh3, Ken Ikehara2 (1.Japan Agency for Marine-Earth Science and Technology, 2.Institute of Geology and Geoinformation, National Institute of Advanced Industrial Science and Technology, 3.Earth and Environmental Sciences, Queens College, City University of New York Earth and Environmental Sciences, Queens College, City University of New York)