[S-EM15] Geomagnetism, paleomagnetism and rock magnetism

Sun. May 22, 2022 9:00 AM - 10:30 AM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

convener:Tetsuro Sato(Earthquake Research Institute, The University of Tokyo), convener:Yutaka Yoshimura(Faculty of Social and Cultural Studies, Kyushu University), Chairperson:Tetsuro Sato(Earthquake Research Institute, The University of Tokyo), Yutaka Yoshimura(Faculty of Social and Cultural Studies, Kyushu University)

We are going to discuss the issues on the magnetic fields of the Earth and planets, paleo magnetism, rock-magnetism, and their applications. This session includes following topics: (1) observation and analysis of the magnetic fields of the Earth and other planets, (2) paleomagnetic field variations obtained from natural and archaeological materials, (3) numerical simulations on the magnetic fields of the Earth and planets, (4) measurements and theories of magnetic properties of rocks, minerals, meteorites, and other materials, (5) climate changes and surface tectonics based on the paleomagnetic measurements of rocks and sediments, (6) observations of the magnetic anomalies and the crustal magnetization models of the Earth, planets, and satellites, and (7) developments of the measurement method and data analysis. We encourage papers stimulating an interdisciplinary collaboration relating to establishment of the SEDI-Japan community. We also encourage presentations of students and young researchers. The presentations and discussions will be made in Japanese or English in this session.

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9:00 AM - 9:15 AM

[SEM15-01] A preliminary paleomagnetic study using an oriented-boring core on the base of Quaternary of the Plio-Pleistocene marine sedimentary succession in the southern Boso Peninsula, Japan

*Makoto Okada¹, Joan WIlly Songeons² (1.Department of Earth Sciences, College of Science, Ibaraki University, 2.Graduate School of Science and Engineering, Ibaraki University)

9:15 AM - 9:30 AM

[SEM15-02] Investigation of the precursor of Matuyama-Brunhes geomagnetic reversals

*Joan WIlly Songeons¹, Makoto Okada¹ (1.Department of Earth Sciences, College of Science, Ibaraki University)

9:30 AM - 9:45 AM

[SEM15-03] Research for improving relative paleointensity estimations: a case study on a sediment core from the Southeast Pacific off Chile

*Toshitsugu Yamazaki¹, Jiaxi Li ¹, Takaya Shimono², Toshiya Kanamatsu³ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Kaiyo Engineering Co., Ltd., 3.Japan Agancy for Marine-Earth Science and Techonology)

9:45 AM - 10:00 AM

[SEM15-04] Application of absolute paleointensity methods on aged thermoremanent magnetization and implications for fragile curvature in paleointensity plots

*Yuhji Yamamoto¹, Lisa Tauxe², Hyeon-Seon Ahn³, Christeanne Nicole Santos² (1.Center for Advanced Marine Core Research, Kochi University, 2.Scripps Institution of Oceanography, University of California San Diego, 3.Korea Institute of Geoscience and Mineral Resources)

10:00 AM - 10:15 AM

[SEM15-05] Temporal variations of the geomagnetic field caused by the length-of-day variations

*Masaki Matsushima¹ (1.Department of Earth and Planetary Sciences, School of Science, Tokyo Institute of Technology)

10:15 AM - 10:30 AM

[SEM15-06] The role of inertia in the growth of equatorially antisymmetric flow during the polarity reversals in geodynamo model

*Hiroaki Matsui¹, Takumi Kera², Masaki Matsushima³, Yuto Katoh² (1.Dept. of Earth and Planetary Sciences, University of California, Davis, 2.Dept. of Geophysics, Tohoku University, 3.Dept. of Earth and Planetary Sciences, Tokyo Institute of Technology)

Session information