Solid Earth Sciences (S)
Session Sub-category Complex & General(CG)
Session ID S-CG45
Title Science of slow-to-fast earthquakes
Short Title Science of slow-to-fast earthquakes
Main Convener Name Aitaro Kato
Affiliation Earthquake Research Institute, the University of Tokyo
Co-Convener 1 Name Asuka Yamaguchi
Affiliation Atomosphere and Ocean Research Institute, The University of Tokyo
Co-Convener 2 Name Ryoko Nakata
Affiliation Graduate School of Science, The University of Tokyo
Co-Convener 3 Name Kurama Okubo
Affiliation National Research Institute for Earth Science and Disaster Resilience
Session Language 
E
Scope 
Growing evidence of geophysical observations has demonstrated that earthquake faults host a broad spectrum of slip modes from slow to unstable fast slip, which may lead to complexity in the nucleation process, rupture behavior, and slip & energy distribution. This discovery has boosted up vigorous discussions about the connection between slow and fast earthquakes including large earthquakes. How and when does a slow earthquake become a fast earthquake? To answer this fundamental question, it is particularly important to proceed further interdisciplinary research through the integration of geophysics, seismology, geodesy, geology, and physics. Developments of measurement technology, application of information science and statistical methods to seismic big-data and utilization of high-performance computing are required as key ingredients in accelerating the integration. This session encourages presentations shedding light on geophysical observations, data analysis, field studies, laboratory experiments, numerical modeling, and theoretical studies. We also welcome contributions from cutting-edge science and technology fields that explore development of novel measurements, data-driven analysis, and large-scale computation etc., those are relevant to slow and fast earthquakes.
Presentation Format Oral and Poster presentation
Joint Session with AGU ,EGU ,AOGS
Invited Authors Anna Jegen (GEOMAR | Helmholtz centre for ocean research)
Kelian Dascher-Cousineau
Donna J Shillington
Kodai Sagae (Geological Survey of Japan, AIST)
Jannes Munchmeyer (Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IRD, Univ. Gustave Eiffel, ISTerre, Grenoble, France)
Hugues Aymeric Raimbourg (Institut des Sciences de la Terre Orleans)
Erik K Fredrickson (University of Texas Institute for Geophysics (UTIG))
Li-Wei Kuo (National Central University, Taiwan)
Time Presentation No Title Presenter
Oral Presentation May 26 PM1
13:45 - 14:00 SCG45-01 Predictable and Unpredictable Aspects of Earthquakes from P-wave Onsets: Vigorous Ruptures Finish Quickly Satoshi Ide
14:00 - 14:15 SCG45-02 Sparse fault representation based on moment tensor interpolation Julien Thurin
14:15 - 14:30 SCG45-03 Do small earthquakes exhibit predominantly pulse-like ruptures? Yoshihiro Kaneko
14:30 - 14:45 SCG45-04 Near-field seismic observations of slip pulse durations and rupture stopping phases from large continental earthquakes Jesse Ryan Kearse
14:45 - 15:00 SCG45-05 Nonplanar Fault Geometry Controls the Spatiotemporal Distributions of Slip and Surface Displacement Ryosuke Ando
15:00 - 15:15 SCG45-06 Abrupt Change in Stress Field Near the Deep Plate Interface: Investigation Using Short-Period Moment Tensor Inversion Keisuke Yoshida
Oral Presentation May 26 PM2
15:30 - 15:45 SCG45-07 Mapping megathrust asperities along the Japan Trench using a high-resolution S-wave velocity structure model estimated by the S-net ocean-bottom seismic network Ryota Takagi
15:45 - 16:00 SCG45-08 Monitoring of Seismic Wave Attenuation Using Cross-correlation and its Relationship to Historical Seismic Events near the Japan Trench Taisei Shimoyama
16:00 - 16:15 SCG45-09 Crustal hetergeneity around the source area of large earthquakes in Japan(II) Hanle Zou
16:15 - 16:30 SCG45-10 Adjoint tomography of the Nankai and Kyushu subduction zones - Waveform misfits and assessment of existing 3D velocity models Samriddhi Prakash Mishra
16:30 - 16:45 SCG45-11 Bayesian multi-source seismic tomography using active- and passive-source seismic data based on physics-informed neural network Ryoichiro Agata
16:45 - 17:00 SCG45-12 Quantifying Abyssal Ocean Temperature Fluctuations to better Isolate Long-Term Crustal Deformation Signals. Anna Jegen
Oral Presentation May 27 AM1
9:00 - 9:15 SCG45-13 Global subduction slow slip events and associated earthquakes Kelian Dascher-Cousineau
9:15 - 9:30 SCG45-14 Spatiotemporal Evolution of Aseismic Slip Preceding the 2011 Tohoku-Oki Earthquake by Reprocessed OBPR Data Ryota Hino
9:30 - 9:45 SCG45-15 Dynamic transitions between slow and fast slip modes revealed by the 2024 and 2025 M7 Hyuga-nada megathrust earthquakes Shaoyang Li
9:45 - 10:00 SCG45-16 Triggered Slow Slip Event on an Inland Fault in the Hengchun Peninsula, Taiwan: Insights from Geodetic Data and Earthquake Sequence Simulation Shih-Han HSIAO
10:00 - 10:15 SCG45-17 Postseismicity underneath a slow slip event reported Daisuke Sato
10:15 - 10:30 SCG45-18 Characteristics of slow slip events and induced seismicity changes off the Boso Peninsula Takane Hori
Oral Presentation May 27 AM2
10:45 - 11:00 SCG45-19 Multiple controls on megathrust properties and behavior along the Alaska-Aleutian subduction zone Donna J Shillington
11:00 - 11:15 SCG45-20 Correlations between dominant styles of near-trench prism deformation and tsunamigenic earthquakes along the Japan Trench Aubrey LaPlante
11:15 - 11:30 SCG45-21 3-D thermal structure and dehydration near the Chile Triple Junction and its relation to slab window, tectonic tremors, and volcanoes Shoichi Yoshioka
11:30 - 11:45 SCG45-22 When a Slow Slip Event Plays with the Seismicity: The Case of the 2021-2023 Manawatu-Kapiti Events and Their Impact on New Zealand's Seismic Hazard Louise Maubant
11:45 - 12:00 SCG45-23 Global investigation of foreshock acceleration prior to large earthquakes Kai Koyama
12:00 - 12:15 SCG45-24 Fluid pressure and frictional-viscous transition in megathrust accounting for dehydration fluid production: Case study in Cascadia and implications for slow earthquakes So Ozawa
Oral Presentation May 27 PM1
13:45 - 14:00 SCG45-25 Machine Learning-Based Detection and Localization of Tectonic Tremors in the Japan Trench Kodai Sagae
14:00 - 14:15 SCG45-26 Variations of earthquake spectral content and their implications for earthquake nucleation Xiaowei Chen
14:15 - 14:30 SCG45-27 Deep Learning-Driven Seismicity Catalog of the Cascadia Region Miao Zhang
14:30 - 14:45 SCG45-28 Detection of slow slip events from continuous seismic waveforms in western Shikoku based on random forest model Kazuki Ohtake
14:45 - 15:00 SCG45-29 Spatio-temporal evolution of the 2010 Bungo slow slip event revealed by Physics-Informed Neural Networks with rate and state friction Rikuto Fukushima
15:00 - 15:15 SCG45-30 Detecting and characterizing slow earthquakes with deep learning on seismic data Jannes Munchmeyer
Oral Presentation May 27 PM2
15:30 - 15:45 SCG45-31 Deciphering deformation processes using Raman spectroscopy on carbonaceous material: the insights from slow strain-rate experiments Hugues Aymeric Raimbourg
15:45 - 16:00 SCG45-32 Rheological transitions from stable flow to localized shear in FEM models for a block in matrix texture Yoshitaka Hashimoto
16:00 - 16:15 SCG45-33 Stress amplification and increased strain rate along the chlorite-actinolite schist: Implications for deep slow slip event Yuto Yamasaki
16:15 - 16:30 SCG45-34 Role of folds formed along plate boundaries in subduction zones as inelastic deformation of accretionary prism Makoto Otsubo
16:30 - 16:45 SCG45-35 Shear heating recognized in subduction metamorphism and temperature at the base of the seismogenic zone Simon Richard Wallis
16:45 - 17:00 SCG45-36 Weakening of forearc mantle wedge at the subduction interface in a warm subduction zone: Insights from the phase equilibria modeling on the fluid-rock reaction Ryosuke Oyanagi
Oral Presentation May 28 AM1
9:00 - 9:15 SCG45-37 Two years of calibrated seafloor pressure data from the Hikurangi margin – can vertical secular strain be resolved? Erik K Fredrickson
9:15 - 9:30 SCG45-38 Observational Efforts toward Understanding the Slow Slip to the Trench in the Subduction Zone of Megathrust Earthquake Source Regions Eiichiro Araki
9:30 - 9:45 SCG45-39 Illuminating Earthquake Sources with Borehole Fiber Optics: Insights from the 2022 ML6.8 Chihshang, Taiwan, Earthquake Jolan Liao
9:45 - 10:00 SCG45-40 Insights from Distributed Acoustic Sensing (DAS) Imaging of Submarine Faults in the Marmara Sea JI ZHANG
10:00 - 10:15 SCG45-41 Frequency and Non-Frequency Dependent DAS Strain-Rate Scaling Relations for S waves: an application in Mexico City Manuel J. Aguilar-Velazquez
10:15 - 10:30 SCG45-42 Variability of the Velocity-Acceleration Scaling Relationship in Accelerating Creep Chengrui Chang
Oral Presentation May 28 AM2
10:45 - 11:00 SCG45-43 A year continued sluggish slip at the Izu-Bonin Trench triggered by a great deep shock Yoshio Fukao
11:00 - 11:15 SCG45-44 Influence of the subducted Paleo-Zenisu ridge on source characteristics of shallow slow earthquakes Shunsuke Takemura
11:15 - 11:30 SCG45-45 Temporal variation in seismic velocity at the Nankai accretionary prism: Implication to fluids, stress field and plate coupling Takashi Tonegawa
11:30 - 11:45 SCG45-46 Very low-frequency earthquakes in the eastern Shikoku observed by campaign deployment of broadband seismometers Akiko Takeo
11:45 - 12:00 SCG45-47 Anomaly Detection Using a Probabilistic Model Describing Spatiotemporal Patterns of Tectonic Tremors: Application to Western Japan Seiya Yano
12:00 - 12:15 SCG45-48 Hierarchical Repeating Earthquakes with Strong Downward Directivity Dawei Gao
Oral Presentation May 28 PM1
13:45 - 14:00 SCG45-49 Geological evidence for fast earthquakes on the Milun Fault, Taiwan Li-Wei Kuo
14:00 - 14:15 SCG45-50 Development of gouge triaxial shear experiments in Taiwan Ting-Yen Tai
14:15 - 14:30 SCG45-51 Earthquake Rupture Speed Dependence on Normal Stress in Laboratory Experiments Chun-Yu Ke
14:30 - 14:45 SCG45-52 Dynamic Strength and Fracture Energy of Rocks at Extreme Strain Rates: Insights into Seismic Energy Dissipation in Fault Zones Jun Muto
14:45 - 15:00 SCG45-53 Pressure oscillations caused by silica precipitation during fluid flow in a granite fracture Atsushi Okamoto
15:00 - 15:15 SCG45-54 Moment-duration scaling of experimental tremors at in-situ pressure and temperature conditions Alexandre SCHUBNEL
Presentation No Title Presenter
Poster Presentation May 28 PM3
SCG45-P01 Interaction between fluid phase transition induced by frictional heat, formation of off-fault damage, and styles of on-fault slip Hanaya Okuda
SCG45-P02 Torque-controlled shearing experiments on smectite gouge under normal stress loading Yohei Hamada
SCG45-P03 Synthesis of the Laboratory Frictional Properties in a Shallow Subduction Zone: The Nankai Trough, Offshore SW Japan Takehiro Hirose
SCG45-P04 Frictional properties of an imbricate thrust in the late Miocene Miura accretionary complex: implication for the faulting behavior along the Sagami Trough Akito Tsutsumi
SCG45-P05 Damage Asymmetry of the Median Tectonic Line in Central Shikoku, SW Japan Hideto Uchida
SCG45-P06 Experimental study of lawsonite blueschist for the mechanism of intermediate-depth earthquakes: insights from acoustic emission Kenta Kajimura
SCG45-P07 Introduction of continuous AE measurement system to laboratory experiments using a sub-meter scale specimen Takaaki Kawahito
SCG45-P08 Two-step strain weakening during frontal thrust formation in dry-sand wedges Nodoka Oda
SCG45-P09 Preliminary results of tectonic underplating process using an analogue sandbox experiment Zubida Khanum
SCG45-P10 Development process of a frontal thrust in a dry sand wedge inferred from X-ray Computed Tomography and Digital Image Correlation Satoshi Tonai
SCG45-P11 A DEM-Based Analysis on Subduction Deformation Under Frictional and Structural Controls Jian Chen
SCG45-P12 The time-dependent contrasting slip behavior induced by H2O-CO2 fluid within slab-mantle interface and implication to slow earthquakes at shallow mantle wedge Shunya Okino
SCG45-P13 Experimental representation of crack-sealing, silica vein formation, and permeability evolution induced by fluid pressure drop at seismogenic depths Ryoto Toda
SCG45-P14 Silica-sealing zone at the base of seismogenic zone revealed by geochemical machine-learning of pelitic schists Taito Amari
SCG45-P15 Relationship between kinetics of mineral vein formation and earthquake cycles around seismogenic megathrusts, subduction zones Hanae Saishu
SCG45-P16 Co-seismic ductile deformation in the carbonate-hosted active faults Thomas Yeo
SCG45-P17 Differential stress and fluid pressure ratio during shear vein formation from geological constraints Takahiro Hosokawa
SCG45-P18 Quantitative relationship between deep low-frequency tremor and short-term slow slip events beneath the Kii Peninsula Akemi Noda
SCG45-P19 Seamount Subduction and Its Impact on Shallow Tremor Activity in Hyuga-Nada using Reflection Full Waveform Inversion and Depth Imaging Yanxue Ma
SCG45-P20 Coseismic slip and early afterslip of the 2024 Hyuganada earthquake modulated by a subducted seamount Yuji Itoh
SCG45-P21 Tidal sensitivity of shallow very low-frequency earthquakes in the Hyuganada region Shugo Tochitani
SCG45-P22 Spatiotemporal characteristics and focal mechanisms of tremor clusters along the mountain range of Taiwan Yi-Chu Hua
SCG45-P23 Aseismic slip and seismic swarms leading up to the 2024 M7.3 Hualien earthquake Kate Huihsuan Chen
SCG45-P24 Shallow Tectonic Tremors in the Southeastern Guerrero Seismic Gap and a Comparison of Envelope Correlation Methods. Kentaro Kuniyoshi
SCG45-P25 Three-dimensional thermomechanical modelling beneath Guerrero, Mexico, and its relation to the occurrence of interplate seismic phenomena Nobuaki Suenaga
SCG45-P26 Strain rate field estimation in Southeastern Europe for evaluation of relationship with seismicity Taku Ueda
SCG45-P27 Gravity changes due to the 2023 M6.5 and 2024 M7.6 earthquakes in the Noto Peninsula Yoshiyuki Tanaka
SCG45-P28 Status of Yemi Microgravity Observatory and the ENIGMA Collaboration JeongCho Kim
SCG45-P29 Reconsideration of Seafloor Pressure Changes and Fluid Dynamics around Kumano-nada Keisuke Ariyoshi
SCG45-P30 Delayed activation of shallow tremors in the Nankai Trough after the M 7.6 Noto Peninsula earthquake Satoru Baba
SCG45-P31 Identifying Shallow Tectonic Tremors along the Nankai Trough: A Machine Learning-Based Analysis of N-net Data Kodai Sagae
SCG45-P32 Repeating earthquake swarms following bursts of shallow tectonic tremor near the Japan Trench, Off Fukushima Shukei Ohyanagi
SCG45-P33 On the recurrence of slow slip events using the Brownian Passage Time distribution: Four case studies in Japan Keisuke Yano
SCG45-P34 DRESS: A Method for Detecting Repeating Earthquakes with a Single Station Xinrong Hou
SCG45-P35 Small-scale Stress Heterogeneity Inferred Many Anti-Repeating Earthquakes in the Sierra Valley, Nevada Satoshi Ide
SCG45-P36 Spatio-Temporal Variability of Very Low-Frequency Earthquakes: A Novel Detection Approach Using Waveform Correlation Yutaro Ishihara
SCG45-P37 Spatial Distribution of Slow and Fast Earthquakes Correlating to the Heterogeneity of Incoming Plate Structure along the Northern Japan Trench Ryota Hino
SCG45-P38 Investigation of Fast-Earthquake Activation Associated with Tectonic Tremors in the Iwate-Oki Region of the Japan Trench Subduction Zone Yuta Ito
SCG45-P39 Estimation of variations in the shallow crustal velocity structure in the Nagano region, Japan, from dense seismic observations, using seismic interferometry Louisa Bagot
SCG45-P40 Inconsistency of a single-point evaluation of traction and improved methods for a fault discretized with triangular dislocations Hiroyuki Noda
SCG45-P41 Numerical Simulation Insights into the impact of tidal stress on seismicity YIshuo ZHOU
SCG45-P42 Dynamic conditions of the Λ-shaped multifault rupture in the 2011 Mj7.0 Fukushima Hamadori, Japan, earthquake Ryosuke Ando
SCG45-P43 Multi-Scale Rate- and Roughness-Dependent Fault Constitutive Law and Dynamic Earthquake Sequence Simulation Reiju Norisugi
SCG45-P44 Stress Changes and Subsequent Earthquake Potential Following the 2024 Mw 7.5 Noto Peninsula Earthquake Mayuko Emori
SCG45-P45 A temporal decrease in Gutenberg-Richter b-values on heterogeneous velocity-weakening faults and its physical mechanism Kikuchi Mei
SCG45-P46 Foreshocks, mainshocks, and aftershocks in multi-scale circular patch model of quasi-dynamic numerical simulation of earthquake generation cycle Ryoko Nakata
SCG45-P47 Dependence of slow slip event sequences on initial conditions in numerical simulations Kento Nishikiori
SCG45-P48 Prototype System for Forecasting of Plate Boundary Sliding Behavior Based on Sequential Data Assimilation in the Nankai Trough Takane Hori
SCG45-P49 Impact of Slow Slip Events on Apparent Plate Coupling and Seismic Hazard Louise Maubant
SCG45-P50 Influence of the 2011 Mw 9.1 Tohoku earthquake stress perturbation on Boso slow slip events Luhong Lu
SCG45-P51 Numerical modeling of recurrences of two types of Kanto earthquakes and Boso slow slip events Takanori Matsuzawa