Session outline
| Solid Earth Sciences (S) | ||
|---|---|---|
| Session Sub-category | Seismology (SS) | |
| Session ID | S-SS12 | |
| Title | Fault Rheology and Earthquake Physics | |
| Short Title | Fault Rheology and Earthquake Physics | |
| Main Convener | Name | Michiyo Sawai |
| Affiliation | Chiba University | |
| Co-Convener 1 | Name | Hanaya Okuda |
| Affiliation | Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology | |
| Co-Convener 2 | Name | Ritsuya Shibata |
| Affiliation | National Research Institute for Earth Science and Disaster Resilience | |
| Co-Convener 3 | Name | Kenichi Tsuda |
| Affiliation | Institute of Technology, Shimizu Corporation | |
| Session Language |
J |
|
| Scope |
The goal of this session is to integrate theoretical, experimental, observational, and numerical perspectives from various fields such as seismology, geodesy, geology, mineralogy, and so on, to define what is known about earthquake source processes and the physical and chemical elementary processes of faulting. This session welcomes studies that address such issues as pre-, co-, and post-seismic processes, the rheology of seismogenic faults and fault rocks, laboratory experiments on elementary processes, numerical models based on frictional laws, and estimates of the stress field in the seismogenic zones. We also welcome studies on fault-zone drilling projects and in situ stress measurements. Through discussions in both Japanese and English, this session promotes the mutual understanding among research fields and interdisciplinary research across all generations. We also encourage participants to communicate and present in English for international interactions. Therefore, presentations may be given in either English or Japanese, although all slides/posters must be written in English (with optional Japanese annotation). |
|
| Presentation Format | Oral and Poster presentation | |
| Invited Authors |
Akito TSUTSUMI (Kyoto University) Miho Furukawa (Tohoku University) Thomas Yeo (University of Tsukuba) Yukinojo Koyama (University of Tokyo) Yuki Funabiki (Kyoto University) |
|
| Time | Presentation No | Title | Presenter |
|---|---|---|---|
| Oral Presentation May 24 PM1 | |||
| 13:45 - 14:00 | SSS12-01 | Deep Earthquake Swarm in Northern Yamaguchi Prefecture | Yoko Kono |
| 14:00 - 14:15 | SSS12-02 | Modeling the Stress Field around the Kego Fault, Japan | Hiromi Sunagawa |
| 14:15 - 14:30 | SSS12-03 | MCMC-based finite-fault inversion of the 2024 Noto Peninsula earthquake using seismic wavefield simulations | Rintaro Enomoto |
| 14:30 - 14:45 | SSS12-04 | Source process of the 2025 Sanriku-oki earthquake inferred from joint inversion of S-net ocean-bottom seismometer and pressure gauge data | Ritsuya Shibata |
| 14:45 - 15:00 | SSS12-05 | The complex rupture process behind the long and slow characteristics of the 2006 MW 7.9 Java tsunami earthquake | Ryo Yamaguchi |
| 15:00 - 15:15 | SSS12-06 | Earthquake Source Studies with Distributed Acoustic Sensing: Current Status and Future Perspectives | Yuki Funabiki |
| Oral Presentation May 24 PM2 | |||
| 15:30 - 15:45 | SSS12-07 | Dynamic Modeling of Accelerating Foreshocks and Rupture Processes in the 2025 Mw8.8 Kamchatka Earthquake | Taiki Watanabe |
| 15:45 - 16:00 | SSS12-08 | Numerical Investigation of Temporal Changes in Repeating Earthquake Behavior Before and After the 2011 Tohoku-Oki Earthquake | Yuki Watanabe |
| 16:00 - 16:15 | SSS12-09 | Nonlinear dynamics and complexity of single fault earthquake cycles | Huiwen Sun |
| 16:15 - 16:30 | SSS12-10 | Diverse preseismic fault creep behavior realized with various evolution laws in dynamic earthquake cycle simulations | Shunya Kaneki |
| 16:30 - 16:45 | SSS12-11 | Measurable range of fracture energy across rupture velocities from 10% of the Rayleigh wave speed using a steady-state rupture model | Kurama Okubo |
| 16:45 - 17:00 | SSS12-12 | Origins of Apparent Complexity in Earthquake Fracture Energy | Sae Watanabe |
| Oral Presentation May 25 AM1 | |||
| 9:00 - 9:15 | SSS12-13 | A Calibrated Comparison of Methylene Blue Adsorption and XRD RockJock Methods Using Kunigel V1 Bentonite to Quantify Smectite in Neodani Fault Gouge: Evaluating methods to measure clay minerals in fault zones. | Auxilio Bosco de Sousa |
| 9:15 - 9:30 | SSS12-14 | Effects of Microbial Fe(III) Reduction on Frictional Strength of Fe-rich Smectite | Jiho Ahn |
| 9:30 - 9:45 | SSS12-15 | Effect of Diagenesis on the frictional and hydraulic properties of Subducting Sediments in the Japan Trench | Hayato Ito |
| 9:45 - 10:00 | SSS12-16 | Temperature and Pressure Dependence of the Frictional Properties of Limestone from Seamounts | Mayuko Sekikawa |
| 10:00 - 10:15 | SSS12-17 | Imaging SAFOD Fault Gouge in Action: New insights on microstructural controls of Rate-and-State Friction through 4D Synchrotron Microtomography | Nick Harpers |
| 10:15 - 10:30 | SSS12-18 | Observing the transition from flow to failure and shear localization in fault rock analogu through synchrotron X-ray operando shear experiments | Miki Takahashi |
| Oral Presentation May 25 AM2 | |||
| 10:45 - 11:00 | SSS12-19 | High-velocity frictional properties of quartz rocks | Akito Tsutsumi |
| 11:00 - 11:15 | SSS12-20 | Decreases in ESR Signals of Impurity-associated Trapped Charges in Quartz during High-velocity Friction Experiments | Kiriha Tanaka |
| 11:15 - 11:30 | SSS12-21 | Effects of Spatial Stress Heterogeneity on Critical Nucleation Length in Large-Scale Rock-Friction Experiments | Yoshiaki Matsumoto |
| 11:30 - 11:45 | SSS12-22 | Friction experiments on olivine at brittle-plastic transition pressures using the high-flux pink beam | Rikuto Honda |
| 11:45 - 12:00 | SSS12-23 | Shear Experiments on Granite under High-Temperature and High-Pressure Conditions: Rheology and AE Characteristics | Sando Sawa |
| 12:00 - 12:15 | SSS12-24 | Deformation mechanisms at nanoscale: Experimental study of continental shear zones using quartz-feldspar mixtures | Miho Furukawa |
| Oral Presentation May 25 PM1 | |||
| 13:45 - 14:00 | SSS12-25 | Numerical modeling of Chemo-mechanical effects at the microscale for induced seismicity | Hadrien Rattez |
| 14:00 - 14:15 | SSS12-26 | Growth Behavior and Controlling Factors of CL Zoning in Quartz Produced by Fluid Pressure Oscillation Experiments | Nishimura Hataka |
| 14:15 - 14:30 | SSS12-27 | The Variation of Stress State Inferred from Veins During Seismic Cycles | En-Chao Yeh |
| 14:30 - 14:45 | SSS12-28 | Quantitative Evaluation of Crustal Stress and Fluid Pressure Conditions around the Tokara Islands, northern Ryukyu Arc | Makoto Otsubo |
| 14:45 - 15:00 | SSS12-29 | Maximum Burial Temperature Dependence of Seismic Velocity Characteristics of Subduction Zone Sedimentary and Metamorphic Rocks | Taichi Nakazato |
| 15:00 - 15:15 | SSS12-30 | Viscoplastic rheology for characterizing the bulk rheology of fault zone rocks | Hiroki Sone |
| Oral Presentation May 25 PM2 | |||
| 15:30 - 15:45 | SSS12-31 | Rheologic controls on the depth-dependence of megathrust earthquakes | Melodie E French |
| 15:45 - 16:00 | SSS12-32 | Fine-grained albite–modulated deformation behaviour at the brittle–ductile transition of continental crustal faults | Thomas Yeo |
| 16:00 - 16:15 | SSS12-33 | Potential geological records of deep slow earthquakes: the view from the Sanbagawa metamorphic belt | Yukinojo Koyama |
| 16:15 - 16:30 | SSS12-34 | Accretion Processes of a Subducted Seamount and Its Associated Deformation and Stress State: A case study at Funafuseyama Unit, Mino Belt, central Japan | Fuka Takuwa |
| 16:30 - 16:45 | SSS12-35 | Strain release mechanisms at plate boundary faults: Geological analysis and numerical simulations | Yoshiasa Haruki |
| 16:45 - 17:00 | SSS12-36 | Seismic Faulting Formed Under Greenschist-Facies Conditions and Subsequent Aseismic Slip: Insights from Microstructures and Mineral Chemistry | Jun-ichi Ando |
| Presentation No | Title | Presenter |
|---|---|---|
| Poster Presentation May 25 PM3 | ||
| SSS12-P01 | Reproduction of interplate slip phenomena along the Nankai Trough (Part 2) | Fuyuki Hirose |
| SSS12-P02 | Relationship between tremor activity and GNSS displacements in northern Cascadia | Kazuki Nakanishi |
| SSS12-P03 | How large slip excess can occur at the dynamic overshoot? | Ryohei Sasajima |
| SSS12-P04 | High-speed slip rates observed in deep earthquakes in the Tonga-Fiji subduction zone | Nozomi Ishida |
| SSS12-P05 | On the Fault Source of the 2024 Noto Peninsula Earthquake: How to Identify the Fault Source Using an Active Fault Zone Model | tatsurou yoshimura |
| SSS12-P06 | Relationship between the Boso slow slip events and the accompanying earthquake swarm: Part 4 | Toshinori Sato |
| SSS12-P07 | Development of proxies for temporal change of focal mechanisms based on potency density tensor inversion models | Naohiro Inoue |
| SSS12-P08 | Correlations between shear strain energy changes by large inland earthquakes and their aftershocks farther from the mainshock faults | Sachiko Tanaka |
| SSS12-P09 | Fluid-Controlled Tidal Modulation of Aftershocks: Insights from the 2022 Ms 6.8 Luding Earthquake, China | Jinbo Zheng |
| SSS12-P10 | Improving the methodology for setting scenarios of Nankai Trough megathrust earthquakes based on dynamic rupture modeling | Bunichiro Shibazaki |
| SSS12-P11 | Assessment of the BPT distribution against recurrence-interval distribution derived from a stochastic process incorporating the Gutenberg-Richter law | Shiro Hirano |
| SSS12-P12 | Estimation of moment tensor solutions with isotropic components for Wakayama earthquake swarm | Akira Taguchi |
| SSS12-P13 | Numerical simulation of great earthquakes along the Nankai Trough focusing on the distribution of shear stress change rate during the interseismic period | Yuuhi Ishino |
| SSS12-P14 | Simultaneous probabilistic inversion of stress state and frictional law from data on natural shear fractures | Nikita Dubinya |
| SSS12-P15 | Stress evolution in the Median Tectonic Line damage zone and its relationship to the regional stress field in Shikoku, Southwest Japan | Hideto Uchida |
| SSS12-P16 | Characteristics of deformation microstructure of fault breccia in the Kizugawa Fault, Japan | Haruki Yamashita |
| SSS12-P17 | Internal deformation structures and mineral compositions of the fault gouge at the Tochudani outcrop, the Hanaore Fault, Japan | Motoya Miyachi |
| SSS12-P18 | Macroscopic structure affected by creep cavitation and ductile fractures in crustal-scale faults at the base of the seismogenic zone | Norio Shigematsu |
| SSS12-P19 | Toward more reliable constraint of mechanical property of fault zones: preliminary assessment of the Fukurozaki fault in Wakayama | Sumire Maeda |
| SSS12-P20 | Off-fault Damage Development along the San Andreas Fault | Kosei Ogita |
| SSS12-P21 | Characteristics of unit-boundary fault in the Mio mélange within the Hidakagawa Group, Kii Peninsula, Japan | Ryosuke Tanimoto |
| SSS12-P22 | How do stress conditions and yield criterion affect the permeability of shear zones induced in mudstone from the Kazusa Group ? | Miyu Matsubara |
| SSS12-P23 | Frictional characteristics of subduction-zone faults under pore-fluid pressure: A case study of fault gouge from the Sengen fault, Misaki formation in the southern Miura peninsula | Ataru Nakanishi |
| SSS12-P24 | Experimental and numerical investigations of boundary shear development in synthetic quartz fault gouge | Tetsuro Hirono |
| SSS12-P25 | Quantitative evaluation of fracture energy and breakdown work in the Arima-Takatsuki Tectonic Line | Takumi Kawakami |
| SSS12-P26 | Experimental investigation of energetics in slip zone during earthquake | Seiyu Nakata |
| SSS12-P27 | Effect of Sliding Velocity on Frictional Healing of Artificial Quartz under High Sliding Velocities | Yuri Aihara |
| SSS12-P28 | Influence of pore pressure distribution induced by fluid injection on fault slip behavior | RIKU IWATA |
| SSS12-P29 | Implications of spatial heterogeneity in frictional properties for creep-to-catastrophic failure transition in landslide materials | Ryosei Omori |
| SSS12-P30 | Dynamic weakening of fault gouge from the eastern Denali fault zone, southwest Yukon, Canada | Kamei Wakana |
| SSS12-P31 | Slow afterslip propagation in a surrounding low-stress barrier following main fault rupture | Futoshi Yamashita |
| SSS12-P32 | Dynamic fluid viscosity change induces slip hardening at the onset of coseismic slip on fluid-lubricated fault | Hanaya Okuda |
| SSS12-P33 | The strength of bi-material Interfaces for Earthquake Nucleation: Comparison of Frictional Properties of heterogeneous Fault Rocks from a former plate boundary | Derya Guerer |