Japan Geoscience Union Meeting 2016

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International Session (Poster)

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 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

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)

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.

5:15 PM - 6:30 PM

[SEM05-P02] Sedimentary record of the Holocene paleomagnetic secular variation from Beppu Bay, Southwest Japan

*Akira Hayashida1, Kazuhiro Anraku2, Masao Ohno3, Michinobu Kuwae4, Keiji Takemura5 (1.Department of Environmental Systems Science, Doshisha University, 2.Graduate School of Science and Engineering, Doshisha University, 3.Department of Environmental Changes, Kyushu University, 4.Center for Marine Environmental Studies, Ehime University, 5.Institute for Geothermal Sciences, Kyoto University)

5:15 PM - 6:30 PM

[SEM05-P08] Palaeomagnetic field strength variations suggest a Mesoproterozoic age of inner core nucleation

*Greig A Paterson1, Andrew Biggin2, Elisa Piispa3, Lauri Pesonen4, Richard Holme2, Toni Veikkolainen4, Lisa Tauxe5 (1.Institute of Geology and Geophysics, Chinese Academy of Sciences, 2.University of Liverpool, 3.Michigan Technological University, 4.University of Helsinki, 5.Scripps Institution of Oceanography, University of California San Diego)