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8. Deformation and Mechanical Strength of Sediments at the Nankai Subduction Zone
2007As in many depositional settings, marine sediments at convergent margins undergo diagenetic changes before, during, and after mechanical consolidation and deformation.
Julia K. Morgan +2 more
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Temperature control on deep tectonic tremor belt in the Nankai subduction zone
2022Deep tectonic tremors occur in the Nankai subduction zone, defining a belt-like zone with a width of a few ten km located at depths between 30 and 55 km along upper surface of the subducting Philippine sea slab. We interpret the geometry of the tremor belt based on temperature calculations.
Ryoya Ikuta +3 more
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Imaging Interseismic Locking at the Nankai Subduction Zone, Southwest Japan
2009Recent geodetic and seismological observations have revealed that brittle-plastic transition zones at subduction zone interfaces are loci of slow slip episodes and nonvolcanic harmonic tremors. It is therefore important to estimate the depth range of brittle-plastic transition zones and how interplate locking changes with space and time within the ...
Yosuke Aoki, Christopher H. Scholz
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Forecast model for great earthquakes at the Nankai Trough subduction zone
pure and applied geophysics, 1988An earthquake instability model is formulated for recurring great earthquakes at the Nankai Trough subduction zone in southwest Japan. The model is quasistatic, two-dimensional, and has a displacement and velocity dependent constitutive law applied at the fault plane.
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Submarine landslide potential near the megasplay fault at the Nankai subduction zone
Earth and Planetary Science Letters, 2011Abstract We investigate the mechanics of slope failures on the Nankai accretionary complex offshore Japan in the vicinity of a major out-of-sequence thrust fault (termed the “megasplay”). Incorporating laboratory-measured shear strength of slope sediments sampled during Integrated Ocean Drilling Project (IODP) Expeditions 315 and 316 with local ...
Matt J. Ikari +3 more
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Locating boundaries between locked and creeping regions at Nankai and Cascadia subduction zones
Journal of Geophysical Research: Solid EarthInterseismic coupling maps and, especially, estimates of the location of the fully coupled (locked) zone relative to the trench, coastline, and slow slip events are crucial for determining megathrust earthquake hazard at subduction zones. We present a physically motivated interseismic coupling inversion that explicitly incorporates locked zones with ...
E. M. Sherrill +2 more
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DEVELOPMENT OF THE KUMANO FOREARC BASIN, NANKAI TROUGH SUBDUCTION ZONE
Geological Society of America Abstracts with Programs, 2021Gregory Moore +2 more
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Tectonophysics, 2013
Abstract We performed 3D seismic tomography of the Hyuga-nada region, western Nankai subduction zone, to investigate the relationship of the subducted part of Kyushu-Palau Ridge (KPR) to coseismic rupture propagation, seismicity, and shallow very low frequency earthquakes.
Yojiro Yamamoto +5 more
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Abstract We performed 3D seismic tomography of the Hyuga-nada region, western Nankai subduction zone, to investigate the relationship of the subducted part of Kyushu-Palau Ridge (KPR) to coseismic rupture propagation, seismicity, and shallow very low frequency earthquakes.
Yojiro Yamamoto +5 more
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Slip-dependent weakening revealed for a shallow megasplay fault in the Nankai subduction zone
2020<p>The Nankai Trough megasplay fault likely hosts different modes of fault slip, from slow to megathrust earthquakes, and is responsible for related phenomena such as tsunamis and submarine landslides. All types of slip events require some kind of frictional weakening process (e.g.
Alexander Roesner +3 more
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Interseismic uplift at the Nankai subduction zone, southwest Japan, 1951–1990
Journal of Geophysical Research: Solid Earth, 1995Uplift as a function of time from 1951 through 1990 has been deduced from annual mean sea level measured at 15 tide gages along the Nankai subduction zone, southwest Japan. The recurrence interval for rupture of the Nankai subduction zone is about 100 years, and the most recent rupture was in late 1946.
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