[S-CG65] Dynamics in mobile belts

Fri. May 29, 2026 1:45 PM - 3:15 PM Exhibition Hall Special Setting (8) (Exhibition Hall 7&8, Makuhari Messe)

Chairperson:Oohashi Kiyokazu(National Institute of Advanced Industrial Science and Technology), Meneses-Gutierrez Angela(National Research Institute for Earth Science and Disaster Resilience)

The dynamic behaviors of mobile belts are expressed across a wide range of time scales, from the seismic and volcanic events that impact society during our lifetimes, to orogeny and the formation of large-scale fault systems which can take place over millions of years. Deformation occurs on length scales from microscopic fracture and flow to macroscopic deformation to plate-scale tectonics. To gain a physical understanding of the dynamics of mobile belts, we must determine the relationships between deformation and the driving stresses associated with plate motion and other causes, which are connected through the rheological properties of the materials. To understand the full physical system, an integration of geophysics, geomorphology, geology, petrology, and geochemistry is necessary, as is the integration of observational, theoretical and experimental approaches. In particular, rheological properties, which are physically affected by fluids in the crust and chemical reactions assisted by fluids, can be resolved only through such an interdisciplinary approach. Frequent large earthquakes, such as the 2011 Tohoku-oki, the 2016 Kumamoto, and the 2024 Noto Peninsula Earthquakes, which were accompanied by significant changes in seismic activity and crustal deformation, making present-day Japan a unique natural laboratory for the study of the dynamics of mobile belts. This session welcomes presentations from different disciplines, such as seismology, geodesy, tectonic geomorphology, structural geology, petrology, geochemistry and hydrology, as well as interdisciplinary studies, that relate to the dynamic behaviors of mobile belts.

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1:45 PM - 2:00 PM

[SCG65-07] Estimation of a strain-rate field in southeastern Tibet by joint inversion of GNSS and InSAR data using basis function expansion with ABIC

*Yohei Nozue¹, Yukitoshi Fukahata², Jin Fang³, Tim J. Wright³ (1. Graduate School of Science, Kyoto University, 2. Disaster Prevention Research Institute, Kyoto University, 3. School of Earth and Environment, University of Leeds)

2:00 PM - 2:15 PM

[SCG65-08] Tectonic stress and rheology estimates for Eurasia and Japan through Bayesian inversion of GNSS velocities

Renato Gutierrez Escobar¹, Magdala Tesauro^1,2, *Rob Govers¹ (1. Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Utrecht, the Netherlands, 2. University of Trieste, Italy)

2:15 PM - 2:30 PM

[SCG65-09] Volcanic Subsidence Triggered by the 2025 Kamchatka Earthquake Detected by InSAR: Local Crustal Deformation Induced by Rheological Heterogeneity

*Mikoto Yasue¹, Youichiro Takada² (1. Natural History Science, Graduate School of Science, Hokkaido University, 2. Department of Earth and Planetary Sciences, Hokkaido University)

2:30 PM - 2:45 PM

[SCG65-10] Localized Deformation in the Northern Part of the Hida Mountain Range Associated with the 2024 Noto Peninsula Earthquake: Dense Geodetic Observation and Physical Modeling

*Shogo Nagaoka¹, Youichiro Takada², Takuya Nishimura³, Takeshi Sagiya⁴, Yusaku Ohta⁵ (1. Dept. Natural History Sciences, Graduate School of Science, Hokkaido University, 2. Dept. Earth and Planetary Sciences, Faculty of Sciences, Hokkaido University, 3. Research Center for Earthquake Hazards, Disaster Prevention Research Institute, Kyoto University, 4. Disaster Mitigation Research Center, Nagoya University, 5. Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University)

2:45 PM - 3:00 PM

[SCG65-11] Modeling Stress Concentration and Relaxation in the Crust of Kyushu, Japan, using Seismic and Geodetic Observations Data

*Yushi Nagayama¹, Satoshi Matsumoto², Yuhei Yuasa³, Takeshi Matsushima², Kentaro Emoto² (1. Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University, 2. Institute of Seismology and Volcanology, Faculty of Science, Kyushu University, 3. Japan Meteorological Agency)

3:00 PM - 3:15 PM

[SCG65-12] An Energy-based Model for the Generation of the 2016 Kumamoto Earthquake, Japan

★Invited Papers

*Angela Meneses-Gutierrez¹, Tatsuhiko Saito¹, Akemi Noda² (1. National Research Institute for Earth Science and Disaster Resilience, 2. Japan Meteorological Agency)

Session information