JpGU-AGU Joint Meeting 2020

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[E] Poster

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

[S-EM19] Earth and planetary magnetism: Observations, modeling, and implications on dynamics and evolution

convener:Hirokuni Oda(Institute of Geology and Geoinformation, Geological Survey of Japan, AIST), Futoshi Takahashi(Faculty of Sciences, Kyushu University), Courtney Jean Sprain(University of Florida), Yoichi Usui(Japan Agency for Marine-Earth Science and Technology)

Paleomagnetism and paleointensity are essential tools that are useful in investigating the history of Earth's lithosphere, deep interior, and environment. Likewise, geomagnetic observations, modeling, and dynamo simulations are also important tools that help elucidate the dynamics of the Earth's magnetic field and the core. Beyond Earth, studies on extracting ancient magnetic fields recorded by extraterrestrial materials are increasing, which are improving our understanding of the evolution of other planetary bodies in addition to the solar system. Here, we invite contributions in the broad spectrum of paleomagnetic research with special emphasis on the "Study of the Earth's Deep Interior" (SEDI) that illustrate modern advances and highlight further work to better understand the dynamics and evolution of Earth and other planetary bodies. Topics of interest include (but are not limited to): geomagnetic jerks, secular variation, excursions and reversals, magnetic field modeling and dynamo simulations, geometry of the geomagnetic field, paleointensity and evolution of the core and core-mantle boundary, polarity reversal frequency through time, magnetic shielding and solar radiation effects, evolution of magnetotactic bacteria and magnetic field, in addition to planetary magnetic fields and evolution of solar system.

[SEM19-P01] Magnetic survey for buried old kilns with paleomagnetic and rock magnetic interpretation

*Tadahiro Hatakeyama1,2, Yu Kitahara3, Nobutatsu Mochizuki4, Yorinao Shitaoka5, Kenji Kanegae6, Hirotsugu Matsusaki7, Naoko Nakamura8 (1.Information Processing Center, Okayama University of Science, 2.Graduate School of Biosphere-Geosphere Science, Okayama University of Science, 3.Graduate School of Social and Cultural Studies, Kyushu University, 4.Faculty of Advanced Science and Technology, Kumamoto University, 5.Faculty of Geo-Environmental Science, Rissho University, 6.Archaeological Museum, The International University of Kagoshima, 7.Education Board, Ibusuki City, 8.Research Center for Archaeology, Kagoshima University)

[SEM19-P08] Assessing the robustness of long-term field variations in the palaeomagnetic record

*Courtney Jean Sprain1,2, Andrew J. Biggin2, Richard K. Bono2, Chris Davies3, Greig Paterson2, Louise Hawkins2, Lauri J. Pesonen4, Pavel Doubrovine5, Toni Veikkolainen6, Aleksey Smirnov7, Elisa Piispa8, Evgeniy Kulakov5, Siim Ots9, Luke Fairchild10 (1.Department of Geological Sciences, University of Florida, Gainesville, FL, USA, 2.Department of Earth, Ocean and Ecological Sciences, University of Liverpool, UK, 3.School of Earth and Environment, University of Leeds, Leeds, UK, 4.Physics Department, University of Helsinki, Finland, FI-00014, Finland, 5.Centre for Earth Evolution and Dynamics, University of Oslo, Norway, 6.Department of Geosciences and Geography, University of Helsinki, Finland, 7.Department of Geological and Mining Engineering and Sciences and Department of Physics, Michigan Technological University, Houghton, MI, USA, 8.School of Earth Sciences, Energy and Environment, Yachay Tech, Ibarra, Ecuador, 9.Department of Geology, University of Tartu, Estonia, 10.Department of Earth and Planetary Sciences, University of California, Berkeley, CA, USA)

[SEM19-P09] Inferring geomagnetic secular variation using MHD/kinematic dynamo modeling with data assimilation

*Futoshi Takahashi1, Shin ya Nakano2, Takuto Minami3, Hinami Taniguchi4, Ryosuke Nakashima4, Masaki Matsushima5, Hisayoshi Shimizu6, Hiroaki TOH7 (1.Faculty of Sciences, Kyushu University, 2.The Institute of Statistical Mathematics, 3.Division of Frontier Planetology, Department of Planetology, Graduate School of Science, Kobe University, 4.Graduate School of Science, Kyushu University, 5.Department of Earth and Planetary Sciences, School of Science, Tokyo Institute of Technology, 6.Earthquake Research Institute, University of Tokyo, 7.Data Analysis Center for Geomagnetism and Space Magnetism, Graduate School of Science, Kyoto University)