Yohei Yukutake
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View article: Decadal Monitoring of Seismic Velocity Changes Beneath Izu‐Oshima, Central Japan, Using Ambient Seismic Noise Records
Decadal Monitoring of Seismic Velocity Changes Beneath Izu‐Oshima, Central Japan, Using Ambient Seismic Noise Records Open
This study monitors the seismic velocity changes beneath the Izu‐Oshima volcano, central Japan, using ambient seismic noise records from 2003 to 2020. Applying seismic interferometry to the continuous waveform data from 24 seismic stations…
View article: Automated Classification of Volcanic Earthquakes Using Transformer Encoders: Insights into Data Quality and Model Interpretability
Automated Classification of Volcanic Earthquakes Using Transformer Encoders: Insights into Data Quality and Model Interpretability Open
Precisely classifying earthquake types is crucial for elucidating the relationship between volcanic earthquakes and volcanic activity. However, traditional methods rely on subjective human judgment, which requires considerable time and eff…
View article: Contribution of aseismic slips to earthquake swarms at the Hakone volcano
Contribution of aseismic slips to earthquake swarms at the Hakone volcano Open
Recent studies have proposed the contribution of aseismic slip (AS) to earthquake swarms. We investigated the role of AS in earthquake swarms that occurred in 2009, 2015, and 2019 at the Hakone volcano, central Japan, through highly resolv…
View article: The role of fluids in earthquake swarms in northeastern Noto Peninsula, central Japan: insights from source mechanisms
The role of fluids in earthquake swarms in northeastern Noto Peninsula, central Japan: insights from source mechanisms Open
A prolonged earthquake swarm has persisted since June 2018 in northeastern Noto Peninsula (central Japan), with activity focused into distinct southern, western, northern, and eastern clusters. To explore the role of fluids in the occurren…
View article: Changes in seismicity in a volcanically active region of the Izu Peninsula, Japan
Changes in seismicity in a volcanically active region of the Izu Peninsula, Japan Open
The eastern Izu Peninsula in Japan is volcanically and seismically active. Ordinary earthquakes frequently occurred at shallow depths in 2006 and 2009, when they clustered as swarms. Beneath ordinary earthquakes, low-frequency earthquakes …
View article: The role of fluids in earthquake swarms in northeastern Noto Peninsula, central Japan: Insights from source mechanisms
The role of fluids in earthquake swarms in northeastern Noto Peninsula, central Japan: Insights from source mechanisms Open
A prolonged earthquake swarm has persisted since June 2018 in northeastern Noto Peninsula (central Japan), with activity focused into distinct southern, western, northern, and eastern clusters. To explore the role of fluids in the occurren…
View article: Volcanic Earthquake Classification using Transformer Encoder and Its Interpretability Evaluation
Volcanic Earthquake Classification using Transformer Encoder and Its Interpretability Evaluation Open
Precisely classifying earthquake types is crucial for elucidating the relationship between volcanic earthquakes and volcanic activity. However, traditional methods rely on subjective human judgment, which requires considerable time and eff…
View article: Reappraisal of volcanic seismicity at the Kirishima volcano using machine learning
Reappraisal of volcanic seismicity at the Kirishima volcano using machine learning Open
Volcanic earthquakes provide essential information for evaluating volcanic activity. Because volcanic earthquakes are often characterized by swarm-like features, conventional methods using manual picking require considerable time to constr…
View article: Linking the flow-induced tremor model to the seismological observation: application to the deep harmonic tremor at Hakone volcano, Japan
Linking the flow-induced tremor model to the seismological observation: application to the deep harmonic tremor at Hakone volcano, Japan Open
Decades ago, Julian (J Volcanol Geotherm Res 101:19–26, 1994. https://doi.org/10.1029/93JB03129 ) proposed the lumped parameter model of non-linear excitation of an elastic channel vibration by fluid flow as a mechanism of volcanic harmoni…
View article: Upward Earthquake Swarm Migration in the Northeastern Noto Peninsula, Japan, Initiated From a Deep Ring‐Shaped Cluster: Possibility of Fluid Leakage From a Hidden Magma System
Upward Earthquake Swarm Migration in the Northeastern Noto Peninsula, Japan, Initiated From a Deep Ring‐Shaped Cluster: Possibility of Fluid Leakage From a Hidden Magma System Open
This study describes an ongoing intense earthquake swarm in the crust of the northeastern Noto Peninsula, Japan, that began around the end of 2019. Fluid movement related to volcanic activity is often involved in earthquake swarms in the c…
View article: Development of a high-performance seismic phase picker using deep learning in the Hakone volcanic area
Development of a high-performance seismic phase picker using deep learning in the Hakone volcanic area Open
In volcanic regions, active earthquake swarms often occur in association with volcanic activity, and their rapid detection and analysis are crucial for volcano disaster prevention. Currently, these processes are ultimately left to human ju…
View article: Data and results in "Relationship between crustal structure and plate convergence around the Izu collision zone in central Japan"
Data and results in "Relationship between crustal structure and plate convergence around the Izu collision zone in central Japan" Open
“allrfstationlist.dat” contains the list of the used seismic stations. The four columns indicate the name, latitude, longitude, and altitude (m) of each station, respectively. “allrfevent.dat” contains the list of the used teleseismic even…
View article: Data and results in "Relationship between crustal structure and plate convergence around the Izu collision zone in central Japan"
Data and results in "Relationship between crustal structure and plate convergence around the Izu collision zone in central Japan" Open
“allrfstationlist.dat” contains the list of the used seismic stations. The four columns indicate the name, latitude, longitude, and altitude (m) of each station, respectively. “allrfevent.dat” contains the list of the used teleseismic even…
View article: Estimation of Volcanic Earthquakes at Kirishima Volcano Using Machine Learning
Estimation of Volcanic Earthquakes at Kirishima Volcano Using Machine Learning Open
Volcanic earthquakes provide essential information for evaluating volcanic activity. As volcanic earthquakes are often characterized by swarm-like features, conventional methods using manual picking require much time in constructing seismi…
View article: Volcanism of Mount Fuji activated by the 2011 Japanese large earthquakes
Volcanism of Mount Fuji activated by the 2011 Japanese large earthquakes Open
The relation between earthquakes and volcanic eruptions, each of which is manifested by large-scale tectonic plate and mantle motions, has been widely discussed. Mount Fuji in Japan last erupted in 1707, paired with a magnitude (M)-9-class…
View article: Earthquake catalog of volcanic earthquake beneath the Kirishima volcano, southwest Japan
Earthquake catalog of volcanic earthquake beneath the Kirishima volcano, southwest Japan Open
Hypocenters of earthquakes are estimated by the double difference method (Waldhauser and Ellsworth, 2000). The file format is the same as that of the output file by hypoDD code that is described in the hypoDD user's manual (https://www.lde…
View article: Data and results in "Relationship between crustal structure and plate convergence around the Izu collision zone, central Japan"
Data and results in "Relationship between crustal structure and plate convergence around the Izu collision zone, central Japan" Open
“allrfstationlist.dat” contains the list of the used seismic stations. The four columns indicate the name, latitude, longitude, and altitude (m) of each station, respectively. “allrfevent.dat” contains the list of the used teleseismic even…
View article: Development of High-Performance Seismic Phase Picker Using Deep Learning in Hakone Volcanic Area
Development of High-Performance Seismic Phase Picker Using Deep Learning in Hakone Volcanic Area Open
In volcanic regions, active earthquake swarms often occur associated with volcanic activity, and their rapid detection and measurement are crucial for volcano disaster prevention. Currently, however, these processes are ultimately left to …
View article: Activated volcanism of Mount Fuji by the 2011 Japanese large earthquakes
Activated volcanism of Mount Fuji by the 2011 Japanese large earthquakes Open
The relation between earthquakes and volcanic eruptions, each of which is manifested by large-scale tectonic plate and mantle motions1, has been widely discussed2-7. Mount Fuji in Japan last erupted in 1707, paired with a magnitude (M)-9-c…
View article: Hidden magma system causing intense earthquake swarm in the northeastern Noto Peninsula, Japan
Hidden magma system causing intense earthquake swarm in the northeastern Noto Peninsula, Japan Open
An intense earthquake swarm is occurring in the crust of the northeastern Noto Peninsula, Japan. Fluid movement related to volcanic activity is often involved in earthquake swarms in the crust, but the last volcanic activity in this area o…
View article: Harmonic tremor from the deep part of Hakone volcano
Harmonic tremor from the deep part of Hakone volcano Open
The feeding system of magmatic fluid from the volcanic root to a shallow magma reservoir remains a poorly understood issue. Seismic events, including volcanic tremors and low-frequency earthquakes, in a deep part beneath volcanos are key o…
View article: Fracture Structures in and Around Hakone Volcano Revealed by Dense Seismic Observations
Fracture Structures in and Around Hakone Volcano Revealed by Dense Seismic Observations Open
Preexisting fracture systems, including old fissures, dikes, and microfractures in the caldera, are possibly used as channels for magma and hydrothermal fluid intrusions during an eruption. To reveal such a fracture system in the Hakone vo…
View article: Earthquake and tilt data for the 2019 Hakone swarm activity
Earthquake and tilt data for the 2019 Hakone swarm activity Open
The catalog for the earthquake swarms and repeating earthquakes during the 2019 Hakone swarm activity, information of focal mechanisms and temporal sequence of tilt data are available in this page.Hypocenters.dat:Hypocenters of earthquakes…