JpGU-AGU Joint Meeting 2026

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[E] Oral

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

[S-EM18] Electric, magnetic and electromagnetic survey technologies and scientific achievements

Sun. May 24, 2026 9:00 AM - 10:30 AM 301A (International Conference Hall, Makuhari Messe)

Chairperson:Goto Tada-nori(Graduate School of Science, University of Hyogo), Hata Maki(Disaster Prevention Research Institute, Kyoto University)

Detailed and accurate subsurface images by electric, magnetic and electromagnetic (EM) surveys are indispensable for investigating the Earth's interior for both academic and commercial purposes. These EM studies cover a broad range of targets in various spatial-temporal scales and places on land and seafloor; e.g., natural resource exploration, environment and geohazard evaluation, and crustal and mantle tectonics and dynamics. Technologies and techniques for data acquisition, analysis, and interpretation have many challenges that should be addressed by scientists and engineers in cooperation. Also, the knowledge should be shared in the international community for further development of this field. The session invites papers on recent advances in the electric, magnetic, and EM survey technologies including instrumentation, data processing, modeling, inversion and imaging, as well as scientific achievements including novel ways of interpretation. The session is partially associated with activities of the Study of Earth's Deep Interior, Japan (SEDI-J).

9:00 AM - 9:15 AM

[SEM18-01] Magnetotelluric imaging of highly deformed fluid-rich weak zones and locked sections of the North Anatolian fault beneath the Marmara Sea, Türkiye

Tulay Kaya-Eken1,2, *Yasuo Ogawa1,3,7, Yoshiya Usui8, Takafumi Kasaya4, Mustafa Kemal Tunçer5, Yoshimori Honkura1, Naoto Oshiman6, Masaki Matsushima1,3, Weerachai Siripunvaraporn9 (1. Tokyo Institute of Technology, Japan, 2. Bogazici University, Türkiye, 3. Institute of Science Tokyo, Japan, 4. Japan Agency for Marine-Earth Science and Technology, Japan, 5. Istanbul University–Cerrahpasa, Türkiye, 6. Kyoto University, Japan, 7. Tohoku University, Japan, 8. The University of Tokyo, Japan, 9. Mahidol University, Thailand)

9:50 AM - 10:05 AM

[SEM18-04] Controls on Arc Volcanism by Subduction Zone Heterogeneity:
A 3-D Electrical Resistivity Study of the New Zealand and Kyushu Arcs

*Maki Hata1, Grant Caldwell2, Makoto Uyeshima3, Alex Caldwell2, Ryokei Yoshimura1, Yasuo Ogawa4, Ted Bertrand2, Stewart Bennie, Wiebke Heise2 (1. Disaster Prevention Research Institute, Kyoto University, 2. Earth Sciences New Zealand, 3. Earthquake Research Institute, The University of Tokyo, 4. Institute of Integrated Research, Institute of Science Tokyo)

10:05 AM - 10:20 AM

[SEM18-05] Electrical Resistivity Structure of Sakurajima Volcano inferred from Broadband Magnetotelluric Data

*Cinantya Nirmala Dewi1, Ryokei Yoshimura2, Maki Hata2, Rintaro Miyamachi2, Mitsuru Utsugi3, Kazuki Sawayama3, Ryosuke Ito1, Shintaro Komatsu2, Kenichi Yamazaki2, Tadaomi Sonoda2, Yuusuke Takenaka2 (1. Graduate School of Science, Kyoto University, 2. Disaster Prevention Research Institute, Kyoto University, 3. Institute for Geothermal Sciences, Graduate School of Science, Kyoto University)

Discussion (10:20 AM - 10:30 AM)

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