[E] Oral

S (Solid Earth Sciences ) » S-IT Science of the Earth's Interior & Tectonophysics

[S-IT20] Coupling of deep Earth and surface processes

Mon. May 25, 2026 9:00 AM - 10:30 AM 101 (International Conference Hall, Makuhari Messe)

Chairperson:Kim YoungHee(Seoul National University), Park Jin-Oh(Department of Ocean Floor Geoscience, Atmosphere and Ocean Research Institute, The University of Tokyo), Isse Takehi(Earthquake Research Institute University of Tokyo), Lee Hyunwoo(Seoul National University), Chang Jih-Hsin(Institute of Oceanography, National Taiwan University)

Feedbacks between surface and deep Earth processes play a key role in plate tectonics influencing mountain building rifting magmatism intraplate deformation and the interactions between landscape and climate
Although individual processes have been extensively studied in recent decades their coupling remains poorly constrained
This session will focus on the mechanisms linking lithospheric deformation and rheology with surface processes such as erosion and sedimentation across a wide range of spatiotemporal scales
Particular emphasis will be placed on the role of deep Earth processes including mantle flow subduction dynamics and slab mantle interaction in shaping both plate boundary and intraplate regions
We invite contributions that explore these couplings through numerical modeling field investigations laboratory experiments and theoretical developments
By integrating studies from subduction zones and mid ocean ridges to intraplate domains this session seeks to advance understanding of how Earths interior interacts with its surface and to foster interdisciplinary collaboration

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9:00 AM - 9:15 AM

[SIT20-01] Whole-mantle azimuthal anisotropy beneath Greenland and surrounding regions

*Genti Toyokuni¹, Dapeng Zhao¹ (1. Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University)

9:15 AM - 9:30 AM

[SIT20-02] Mantle Transition Zone Topography in New Zealand from Teleseismic P-wave Receiver Functions

*Quan Zhang¹, Pascal Audet¹, Martha K Savage², Rupert Sutherland^2,3, Tim Stern³ (1. Department of Earth and Environmental Sciences, University of Ottawa, 2. School of Geography, Environment and Earth Sciences, Victoria University of Wellington, Wellington, New Zealand., 3. Earth Sciences New Zealand, Lower Hutt, New Zealand.)

9:30 AM - 9:45 AM

[SIT20-03] Shear Wave Velocity Structure Beneath Western Pacific Ocean by a Joint Inversion of Body and Surface Waves

*Yuko Kondo¹, Hiroko Sugioka¹, Masayuki Obayashi^1,2, Takehi Isse³, Kazunori Yoshizawa⁴, Nozomu Takeuchi³, Kuo Ban-Yuan Kuo⁵, Lin Patty⁶ (1. Kobe University, 2. Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 3. Earthquake Research Institute, the University of Tokyo, 4. Hokkaido University, 5. Institute of Earth Sciences, Academia Sinica, 6. National Taiwan Normal University)

9:45 AM - 10:00 AM

[SIT20-04] Coupling or decoupling of subslab flow beneath subduction zones revealed by multiple-layer shear wave splitting inversion

*Ban-Yuan Kuo¹, Cheng-Chien Peng¹, Jean-Paul Montagner² (1. Institute of Earth Sciences, Academia Sinica, 2. Institut de Physique du Globe de Paris, Universite Paris-Diderot)

10:00 AM - 10:15 AM

[SIT20-05] Imprints of Cretaceous Magmatism on the Oldest Pacific Lithosphere: Evidence From Seismic Anisotropy

*Kai Xun Chen¹, Takehi Isse², Hitoshi Kawakatsu², Hajime Shiobara², Nozomu Takeuchi², Hiroko Sugioka³, Hisashi Utada², Ban-Yuan Kuo¹, Patty Pei-Ying Lin⁴, Shu-Huei Hung⁵, Ping-You Chang⁶, Yih Yang⁷, Wu-Cheng Chi¹, YoungHee Kim⁸, Sang-Mook Lee⁸, Yuancheng Gung⁵ (1. Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan, 2. Earthquake Research Institute, The University of Tokyo, Tokyo, Japan, 3. Graduate School of Science, Kobe University, Hyogo, Japan, 4. Department of Earth Sciences, National Taiwan Normal University, Taipei, Taiwan, 5. Department of Geosciences, National Taiwan University, Taipei, Taiwan, 6. Department of Earth Sciences, National Central University, 7. National Institutes of Applied Research, Taiwan Ocean Research Institute, 8. School of Earth and Environmental Sciences, Seoul National University, Seoul, Republic of Korea)

10:15 AM - 10:30 AM

[SIT20-06] Seismic properties of lawsonite blueschist in cold subduction zones

*Haemyeong Jung¹, Seungsoon Choi^1,2, Junha Kim^1,3 (1. Tectonophysics Laboratory, School of Earth and Environmental Sciencecs, Seoul National University, Seoul, Republic of Korea, 2. Institute of Earth, Atmosphere, Astronomy, Yonsei University, Seoul, Republic of Korea, 3. The Research Institute of Basic Sciences, Seoul National University, Seoul, Republic of Korea)

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