Results 181 to 190 of about 3,084 (214)

Acoustic Waveform Tomography of OBS data in the Nankai subduction zone

SEG Technical Program Expanded Abstracts 2010, 2010
Acoustic waveform tomography was applied to Ocean Bottom seismograph data acquired in the seismogenic Nankai subduction zone. To reduce artifacts arising from elastic effects, the inversion focused on early arrivals, and was conducted in two steps; i) fitting phase information, and ii) the incorporation of amplitude information. Image sources were used
Rie Kamei, R. Gerhard Pratt
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Historical activity of an onshore subduction thrust and related geomorphic changes, northeastern Nankai subduction zone

2023
We show new geomorphic and geologic evidence for historical activity of the onshore deformation front of the Nankai subduction zone, constrained by Holocene tectonic geomorphology, high-resolution borehole stratigraphy, and seismic reflection profile.  Borehole transect across a newly recognized late Holocene fold scarp contains middle to late
Tatsuya Ishiyama, Toshimichi Nakanishi, Daisuke Hirouchi, Nobuhisa Matsuta, Naoko Kato, Hiroshi Sato   +5 more
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Deformation and stress localization at the Nankai subduction zone, southwest Japan

Earth and Planetary Science Letters, 2003
Abstract Deformation observed at subduction zones provides direct information on kinematics/mechanics of plate interaction. Previous analysis of GPS (global positioning system) observations at Japan subduction zones mainly focused on the pattern of deformation or strain, and did not attempt to assess stress change associated with plate subduction. In
S. Zhao, X. Wu, T. Hori, A. Smith, Y. Kaneda, S. Takemoto   +5 more
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Imaging Interseismic Locking at the Nankai Subduction Zone, Southwest Japan

2009
Recent 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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Geological characteristics of the Nankai Trough subduction zone and their tectonic significances

Acta Oceanologica Sinica, 2020
The Nankai Trough subduction zone is a typical subduction system characterized by subduction of multiple geological units of the Philippine Sea Plate (the Kyushu-Palau Ridge, the Shikoku Basin, the Kinan Seamount Chain, and the Izu-Bonin Arc) beneath the Eurasian Plate in the southwest of Japan.
Jie Zhang, Ling Chen, Zihua Cheng, Limei Tang   +3 more
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Interseismic uplift at the Nankai subduction zone, southwest Japan, 1951–1990

Journal of Geophysical Research: Solid Earth, 1995
Uplift 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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Submarine landslide potential near the megasplay fault at the Nankai subduction zone

Earth and Planetary Science Letters, 2011
Abstract 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, Michael Strasser, Demian M. Saffer, Achim J. Kopf   +3 more
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High temperature fluid flow through active décollement at the Nankai subduction zone

2023
Temperature is one of the important parameters to understand complex dynamics, because temperature of the crust is changed by some events such as volcanic activities and a passage of high temperature fluid, which affects physical property, chemical cycle and also microbiosphere.
Nana Kamiya, Masataka Kinoshita, Weiren Lin, Takehiro Hirose, Yuzuru Yamamoto, Stephen A Bowden, Man-Yin Tsang, Satoshi Tonai   +7 more
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Forecast model for great earthquakes at the Nankai Trough subduction zone

pure and applied geophysics, 1988
An 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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Waveform tomography imaging of a megasplay fault system in the seismogenic Nankai subduction zone

Earth and Planetary Science Letters, 2011
Abstract We apply Frequency-domain Waveform Tomography to form quantitative, high-resolution P-wave velocity images of a megasplay fault system within the central Nankai subduction zone offshore of southwest Japan, using controlled source Ocean Bottom Seismometer (OBS) data originally acquired in 2004. The Waveform Tomography method exploits recorded
Rie Kamei, R. Gerhard Pratt, Takeshi Tsuji   +2 more
openaire   +1 more source