Ambient seafloor noise excited by earthquakes in the Nankai subduction zone. [PDF]
Nat Commun, 2015 AbstractExcitations of seismic background noises are mostly related to fluid disturbances in the atmosphere, ocean and the solid Earth. Earthquakes have not been considered as a stationary excitation source because they occur intermittently. Here we report that acoustic-coupled Rayleigh waves (at 0.7–2.0 Hz) travelling in the ocean and marine sediments,
Tonegawa T +5 more
europepmc +4 more sources
Link between the Nankai underthrust turbidites and shallow slow earthquakes [PDF]
Scientific Reports, 2023 Trench sediments such as pelagic clay or terrigenous turbidites have long been invoked to explain the seismogenic behavior of the megathrust fault (i.e., décollement).
Jin-Oh Park, Ehsan Jamali Hondori
doaj +2 more sources
Long-term Monitoring in Deep Boreholes in the Nankai Subduction Zone [PDF]
Scientific Drilling, 2007 No abstract available.
Hisao Ito
doaj +6 more sources
Structural control on the nucleation of megathrust earthquakes in the Nankai subduction zone [PDF]
Geophysical Research Letters, 2014 AbstractTo clarify the causal mechanisms of megathrust earthquakes, we studied the detailed three‐dimensional P and S wave velocities (V), attenuation (Q), and Poisson's ratio (σ) structures of the Nankai subduction zone in southwest Japan, using a large number of high‐quality arrival time and t* data measured precisely from seismograms of local ...
Xin Liu, Dapeng Zhao
exaly +2 more sources
Weakening behavior of the shallow megasplay fault in the Nankai subduction zone
Earth, Planets and Space, 2022 The Nankai Trough megasplay fault hosts diverse modes of fault slip, ranging from slow slip events to megathrust earthquakes, and is responsible for related phenomena such as tsunamis and submarine landslides.
Alexander Roesner +3 more
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Deformation Process and Mechanism of the Frontal Megathrust at the Nankai Subduction Zone
Geochemistry, Geophysics, Geosystems, 2022 The frontal megathrust of the Nankai Trough subduction zone is recognized as a seismogenic fault based on a record of frictional heating, but the underlying micromechanical processes that act on the fault surface are poorly known. Here we present a layer
Gaku Kimura +12 more
doaj +2 more sources
An inhomogeneous across-slab conduit controlled by intraslab stress heterogeneity in the Nankai subduction zone. [PDF]
Sci Rep, 2019 AbstractNonvolcanic, deep low-frequency tremors and slow-slip events occur simultaneously in the transition zone from locked to continuously creeping fault in the down-dip portion of the Nankai Trough subduction zone, southwestern Japan. The occurrence of these slow earthquakes is discontinuous along the trench and attributed to the effect of high pore
Otsubo M +3 more
europepmc +4 more sources
Shallow very-low-frequency earthquakes accompany slow slip events in the Nankai subduction zone [PDF]
Nature Communications, 2018 Slow earthquakes are now increasingly recognised to occur at plate boundaries globally. Here, the authors examine seafloor observational data from the Nankai trough and find that very-low-frequency events and slow-slip events frequently occur together ...
Masaru Nakano +4 more
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Role of plate convergence rate in shaping earthquake recurrence in subduction zones [PDF]
Scientific ReportsUnderstanding the complex interplay of subduction zone processes is key to unravelling the timing and distribution of great earthquake cycles within the framework of the plate tectonics paradigm.
Sayak Ray +4 more
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Reconstruction of stress trajectory field in Nankai subduction zone based on drilling data
Journal of Rock Mechanics and Geotechnical EngineeringThis paper presents some results of stress field reconstruction in the Nankai Trough subduction zone located within the area bounded by 136.3°–137°E and 33°–33.5°N where 12 scientific wells were drilled during Nankai Trough Seismogenic Zone Experiment ...
Nikita Dubinya, Alexander Galybin
doaj +3 more sources