Solid Earth Sciences (S)
Session Sub-category Complex & General(CG)
Session ID S-CG40
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 Yohei Hamada
Affiliation Japan Agency for Marine-Earth Science and Technology
Co-Convener 3 Name Akemi Noda
Affiliation Japan Meteorological Agency
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 Shunsuke Takemura (Earthquake Research Institute, the University of Tokyo)
KYUNGJAE IM (California Institute of Technology)
Tae-Hoon Uhmb (Disaster Prevention Research Center, Aichi Institute of Technology)
Yuya Akamatsu (Japan Agency for Marine-Earth Science and Technology)
Takeshi Akuhara (Earthquake Research Institute, University of Tokyo)
Kaiwen Wang (Lamont Doherty Earth Observatory)
Weiqiang Zhu (University of California Berkeley)
Luca Dal Zilio (Earth Observatory of Singapore, Nanyang Technological University, Singapore)
Jeong Woo Kim
Time Presentation No Title Presenter
Oral Presentation May 28 AM1
09:00 - 09:15 SCG40-01 Towards End-to-End Earthquake Monitoring Using a Multitask Deep Learning Model Weiqiang Zhu
09:15 - 09:30 SCG40-02 Unsupervised Event Characterization Reveals Complexity in Earthquake Spectral Patterns and Driving Processes Kaiwen Wang
09:30 - 09:45 SCG40-03 A clearer view of seismicity offshore NE Japan through deep-learning-based analysis of S-net data: evidence for the role of forearc fluids in interplate coupling Naoki Uchida
09:45 - 10:00 SCG40-04 Foreshock sequence prior to the 2024 M7.6 Noto-Hanto earthquake, Japan Aitaro Kato
10:00 - 10:15 SCG40-05 Machine learning predicts earthquakes in the continuum model of a rate-and-state fault and in a meter-scale laboratory experiment Reiju Norisugi
Oral Presentation May 28 AM2
10:45 - 11:00 SCG40-06 Toward a comprehensive understanding of shallow slow earthquakes: a review of key studies along the Nankai Trough and future perspectives Shunsuke Takemura
11:00 - 11:15 SCG40-07 P- and S-wave velocity imaging from active and passive seismic data for seamount subduction at Hyuga-Nada Rie Nakata
11:15 - 11:30 SCG40-08 Prevalence of potential mud volcanism in the Hyuga-nada area and its hydrogeological implications Ryuta Arai
11:30 - 11:45 SCG40-09 Structural controls on the spatial extent of tectonic tremors in Kumano-nada Takeshi Akuhara
11:45 - 12:00 SCG40-10 Frontal Thrust ramp-up and Slow Earthquakes due to Underthrusting of Basement Relief in the Nankai Trough Gaku Kimura
Oral Presentation May 28 PM1
13:45 - 14:00 SCG40-11 Fluidization of a fault in a shallow portion of an accretionary prism during faulting Akito Tsutsumi
14:00 - 14:15 SCG40-12 Temperature-dependent frictional properties of oceanic basalt and pelagic sediments, and their implications for earthquakes at the shallow Japan Trench subduction zone Kyuichi Kanagawa
14:15 - 14:30 SCG40-13 CO2 metasomatism vs. silica metasomatism on the formation of talc at slab-mantle interface: experimental insights and its implications to slow slip event Shunya Okino
14:30 - 14:45 SCG40-14 Three-dimensional location analysis on acoustic emissions and faults in metastable olivine under pressure-temperature conditions of deep subducted slabs Tomohiro Ohuchi
14:45 - 15:00 SCG40-15 Predicting of future frictional behaviors on experiment fault surfaces: A Transformer Architecture approach Tae-Hoon Uhmb
Oral Presentation May 28 PM2
15:30 - 15:45 SCG40-16 Multiscale crack distribution in subsuction zone and its implication for scale dependence of seismic velocity Yuya Akamatsu
15:45 - 16:00 SCG40-17 Thermoelastic instability and temperature-weakening friction cause sample-size dependency of dynamic weakening in high-velocity friction experiments Hiroyuki Noda
16:00 - 16:15 SCG40-18 Insights into Back-Propagating Rupture from Numerical Simulations, Laboratory Experiments, and Natural Observations Xiaotian Ding
16:15 - 16:30 SCG40-19 Impacts of rheological variations along plate boundary in subduction zones for deep slow earthquakes Ayumu Miyakawa
16:30 - 16:45 SCG40-20 Investigating Along-Fault Variability in Slow Earthquake Cycles Through a Numerical Approach Utilizing Combined Viscoelastic and Damage Rheological Models Sina Massoumi
Oral Presentation May 29 AM1
09:00 - 09:15 SCG40-21 Cascading Foreshocks, Aftershocks, and Earthquake Swarms in a Discrete Fault Network KYUNGJAE IM
09:15 - 09:30 SCG40-22 Granular simulation for earthquakes in geological scale structure evolution Mikito Furuichi
09:30 - 09:45 SCG40-23 Multi-scale circular patch model in quasi-dynamic numerical simulation of earthquake generation cycle along the Japan Trench Ryoko Nakata
09:45 - 10:00 SCG40-24 Characterizing regular and slow earthquake seismogenic zones by frictional locking and kinematic coupling Daisuke Sato
10:00 - 10:15 SCG40-25 Inversion for the spatial distribution of frictional parameters on the Long-term SSE fault with Physics-Informed Neural Networks Rikuto Fukushima
Oral Presentation May 29 AM2
10:45 - 11:00 SCG40-26 Fault valving and fluid-pressure cycling in slow and fast earthquakes Luca Dal Zilio
11:00 - 11:15 SCG40-27 Duplex Underplating, Sediment Dehydration and Quartz Vein Mineralization in the Deep Tremor Source Region Kohtaro Ujiie
11:15 - 11:30 SCG40-28 Slow slip events and pore pressure oscillations Alexis Alejandro Saez Uribe
11:30 - 11:45 SCG40-29 Micro Gravity Effect of Earthquake at Yemi Underground Lab in Korea Jeong Woo Kim
11:45 - 12:00 SCG40-30 New real-time seafloor borehole observatory at C9038B in the Nankai Trough for shallow Slow Slip Event observation in the Nankai Trough. Eiichiro Araki
Oral Presentation May 29 PM1
13:45 - 14:00 SCG40-31 Detailed spatio-temporal comparison of SSE slip and tremor activities in the Nankai subduction zone Suguru Yabe
14:00 - 14:15 SCG40-32 Tectonic Tremors and Tremor Clusters from 0.3 Seconds to 10 Days Detected by Event Feature- and Seismicity-based Clustering: Application to Western Japan Seiya Yano
14:15 - 14:30 SCG40-33 Effects of long-term slow slip events on stress state in the Philippine Sea plate beneath Bungo channel, southwestern Japan Saeko Kita
14:30 - 14:45 SCG40-34 Simultaneous hypocenter determination of shallow tremors and regular earthquakes in the northern Japan Trench Kosuke Minamoto
14:45 - 15:00 SCG40-35 Association between regular small earthquakes and tectonic tremors along the northern Japan Trench Ryota Hino
Oral Presentation May 29 PM2
15:30 - 15:45 SCG40-36 Spatiotemporal characteristics of tectonic tremors in the collisional orogen of Taiwan Satoshi Ide
15:45 - 16:00 SCG40-37 Improvment of Seismic Hazard Assessment Through the Reevaluation of Crustal Deformation along Active Faults: A Case study of the Hengchun Fault in Southern Taiwan Shih-Han HSIAO
16:00 - 16:15 SCG40-38 An interpretation of low residual gravity anomaly and its relationship with slow-to-fast earthquakes in the Guerrero Seismic Gap, Mexico Yoshihiro Ito
16:15 - 16:30 SCG40-39 Large and small earthquakes can have similar seismic wave onsets of the San Andreas fault in Northern California Weifan Lu
16:30 - 16:45 SCG40-40 Rapid slip modeling of large earthquakes by joint inversion of W-phase and back-projected images Yuyang Peng
Presentation No Title Presenter
Poster Presentation May 28 PM3
SCG40-P01 Slow slip event nucleation by tremor activities unpinning locked Episodic Tremor and Slip zone Yuji Itoh
SCG40-P02 SSE activity before the 2011 Tohoku Earthquake:
A revisit based on the reprocessed OBPR data 		Hirata Kyosuke
SCG40-P03 Classification of tilt changes before volcanic eruptions in Japan Yuta Maeda
SCG40-P04 Modeling temporal variations of physical properties at the plate boundary in the Nankai subduction zone Takashi Tonegawa
SCG40-P05 Insights into the Mechanics of the Lower Crust from Focal Mechanisms of Low-Frequency Earthquakes on the San Andreas Fault Naofumi Aso
SCG40-P06 Extraction and analysis of deep tectonic tremor waveforms using convolutional neural network : Application to Hi-net stations in the Nankai subduction zone Yuya Jinde
SCG40-P07 Temporal slip slip increases during short-term SSE Akio Katsumata
SCG40-P08 Data Assimilation for Fault Slip Monitoring and Short-Term Prediction of Spatio-Temporal Evolution of Slips: Application to the 2010 Long-Term SSE in the Bungo Channel, Japan Masayuki Kano
SCG40-P09 Physics-informed neural network for travel time prediction for 3D velocity structure model in Nankai Trough Ryoichiro Agata
SCG40-P10 Automatic slow slip signal detection based on machine learning of the GNSS displacement time series of southwest Japan Yusuke Tanaka
SCG40-P11 Deep-leaning-based fault slip estimation method using GNSS displacements:
comparison with the least-squares-based method 		Ryo Nakagawa
SCG40-P12 Optimal transport-based full waveform inversion for high resolution imaging of plate boundary structures in the slow earthquake gap off Western Kii Peninsula, Nankai Trough Yanfang Qin
SCG40-P13 Outer rise normal fault controls on shallow decollement heterogeneity, prism evolution, and relationships to shallow slip mode in the Japan trench Christine Regalla
SCG40-P14 Wedge deformation from multi-seamount subduction in Nankai Trough off Muroto and its implication to slow earthquake activity Paul Caesar Mason Flores
SCG40-P15 Seismic reflection imaging in the northern part of the Japan Trench subduction zone Yasuyuki Nakamura
SCG40-P16 Source Imaging of Subduction Zone Tremors Using Time Reversal Imaging Amarjeet Kumar
SCG40-P17 Structural description and interpretation of the seismic reflection image along subducting seamount in Hyuga-nada Yohei Hamada
SCG40-P18 Towards adjoint tomography of the Nankai and Kyushu subduction zones Samriddhi Prakash Mishra
SCG40-P19 Seismic moment tensor estimation for the virtual earthquake in real-scale numerical rockbox simulations Tejaswini Mangalagiri
SCG40-P20 Seismic activity around plate boundary near westernmost Nankai trough revealed by ocean bottom seismometer observation ChingYu Hu
SCG40-P21 Increased activity of very low-frequency earthquakes in the southwest Ryukyu Mamoru Nakamura
SCG40-P22 A possible new criterion to distinguish small-sized ordinary earthquakes and tremors in shallow subduction zone, based on waveform similarity Akiko Toh
SCG40-P23 Intersource-Distance Dependence of Seismic Waveform Similarity and Validity of Repeating Earthquake Detection Keisuke Yoshida
SCG40-P24 Triggered tremor activity off the Cape Muroto observed by distributed acoustic sensing after the 2024 M7.6 Noto Peninsula earthquake Satoru Baba
SCG40-P25 Shallow tectonic tremor triggered by large regional earthquakes in the southeastern Guerrero seismic gap Kentaro Kuniyoshi
SCG40-P26 Resolving source parameters of induced seismicity using near-field observations Xiaolin Huang
SCG40-P27 Crustal heterogeneity around the source area of large earthquakes in Japan Hanle Zou
SCG40-P28 Mechanical evolution of gabbro faults during sequence of high-velocity slip pulses with frictional melting Takehiro Hirose
SCG40-P29 The frictional properties of an imbricate thrust of the Miura accretionary complex for a wide range of slip velocities. Yuki Kasai
SCG40-P30 Abrupt host rock fragmentation induced by fluid phase transition during fault slip and its impact on earthquake energy partitioning Hanaya Okuda
SCG40-P31 Deformation mechanisms and rheology of chlorite-actinolite schist: Implications for slow slip near the mantle-wedge corner Yuto Yamasaki
SCG40-P32 The role of ductile fractures in continental crustal faults from micro to macro scale Norio Shigematsu
SCG40-P33 Geochemical evidence for fluid-rock interactions around the thermally controlled base of the subduction seismogenic zone Tsuyoshi Ishikawa
SCG40-P34 Propagation pattern of décollement in accretionary wedge with a weak layer: Insights from sandbox analogue experiments Satoshi Tonai
SCG40-P35 Salinity and pressure recorded in fluid inclusions in carbonate-silicate veins in pelitic schists of the Kii Shimanto belts and in serpentinite of Kanto Sambagawa belts Tatsuhiko Kawamoto
SCG40-P36 The heating signature within fossil sesimogenic zone recorded as secondary magnetization: Cretaceous Shimanto Belt, Yokonami mélange, southwest Japan Taizo Uchida
SCG40-P37 Geological and experimental investigations of slow slip in the Japan Trench subduction zone Mizuki Ueda
SCG40-P38 Fluid pressure from a shallow very-low frequency earthquake is related to the topography Sora Hiraoka
SCG40-P39 Temporary fracture sealing by silica precipitation in granite: insights from flow-through experiments under superhot conditions Edward L. Vinis
SCG40-P40 Laboratory crack-sealing, silica vein formation and permeability evolution driven by fluid pressure drop in the seismogenic depths Ryoto Toda
SCG40-P41 Episodic Tremor and Slip in a finite-thickness shear zone based on a frictional-viscous model Jun Xie
SCG40-P42 An attempt to express various types of slip using a simple friction law Takane Hori
SCG40-P43 Laboratory-scale numerical simulation of the earthquake cycle on the bending fault Ran Xu
SCG40-P44 Spontaneous segmentation of slow slip events on a planar uniform fault -Implication from numerical simulations- Kento Nishikiori
SCG40-P45 Preliminary numerical modeling of slow and fast earthquakes on the subducting Philippine Sea Plate in the Kanto region Takanori Matsuzawa
SCG40-P46 Plate geometry governs stress field and earthquake generation in island ark-trench coupled system Ryosuke Ando
SCG40-P47 Installation of the new LTBMS system in the Nankai Trough, and evaluation of cement curing process on long-term strain data and SSEs detection. Yuya Machida
SCG40-P48 YeMiGO: Data Processing and Analysis of Underground Superconducting Gravity Data in South Korea Jungkeun John Oh
SCG40-P49 ENIGMA: East-Asian Network Initiative for Gravity Measurement Alliance: A Proposal and Science Cases Jungkeun John Oh
SCG40-P50 Precise gravity observations before and after the Noto Peninsula earthquakes in 2023 and 2024 Yoshiyuki Tanaka
SCG40-P51 An interpretation of gravity changes caused by the Noto Peninsula Earthquakes based on a fault model Maki Oshida