Results 11 to 20 of about 1,202,006 (199)

Fluid migration before and during slow earthquakes in the shallow Nankai subduction zone [PDF]

Journal of Geophysical Research: Solid Earth, 2021
Fluid migration in subduction zones is a key controlling factor of slow and megathrust earthquakes at plate boundaries. During the migration, seismic velocity and heterogeneous structures in its pathways may be temporarily varied, preferably triggering slow earthquakes.
Takashi Tonegawa, Shunsuke Takemura, Suguru Yabe, Kiyoshi Yomogida   +3 more
openaire   +3 more sources

Sedimentary inputs to the Nankai subduction zone: The importance of dispersed ash [PDF]

Geosphere, 2018
We examine the importance of dispersed volcanic ash as a critical component of the aluminosilicate sediment entering the Nankai Trough, located south of Japan’s island of Honshu, via the subducting Philippine Sea plate. Multivariate statistical analyses of an extensive major, trace, and rare earth element data set from bulk sediment and discrete ash ...
Rachel P. Scudder, Richard W. Murray, Steffen Kutterolf, Julie C. Schindlbeck, Michael B. Underwood, Kuo-Lung Wang   +5 more
core   +5 more sources

Detailed Shallow Shear Velocity Structure in the Nankai Trough From Ambient Noise Differential Adjoint Tomography: Implications for Earthquake Generation Mechanisms

Geophysical Research Letters
Seismic and aseismic slip has been reported in the Nankai Trough. In this study we apply ambient noise differential adjoint tomography to obtain a high‐resolution S‐wave velocity (Vs) model in the Nankai Trough.
Lina Gao, Xin Liu, Ayako Nakanishi, Haoran Meng, Xi Wang, Zhanwen Li, Gou Fujie   +6 more
doaj   +2 more sources

Distribution and depth of bottom-simulating reflectors in the Nankai subduction margin

Earth, Planets and Space, 2018
Surface heat flow has been observed to be highly variable in the Nankai subduction margin. This study presents an investigation of local anomalies in surface heat flows on the undulating seafloor in the Nankai subduction margin.
Akihiro Ohde, Hironori Otsuka, Arata Kioka, Juichiro Ashi   +3 more
doaj   +2 more sources

Slow slip event within a gap between tremor and locked zones in the Nankai subduction zone [PDF]

Geophysical Research Letters, 2016
AbstractWe report on two small long‐term slow slip events (SSEs) within a gap between tremor and locked zones in the Nankai subduction zone, southwest Japan. The SSEs were detected by subtracting the steady state component and postseismic effects of large earthquakes from long‐term and high‐density Global Navigation Satellite System data.
Ryota Takagi, Takuto Maeda, Kazushige Obara   +2 more
exaly   +2 more sources

Subducted carbon weakens the forearc mantle wedge in a warm subduction zone [PDF]

Nature Communications
Subducting oceanic plates carry large amounts of carbon into the Earth’s interior. The subducted carbon is mobilized by fluid and encounters ultramafic rocks in the mantle wedge, resulting in changes to the mineral assemblage and mechanical properties of
Ryosuke Oyanagi, Atsushi Okamoto
doaj   +2 more sources

Long-term slow slip events along the Nankai trough subduction zone after the 2011 Tohoku earthquake in Japan

Earth, Planets and Space, 2017
The global navigation satellite system (GNSS) network in Japan has detected transient crustal deformation in regions along the Nankai trough subduction zone in southwest Japan from approximately 2013, after the 2011 Tohoku earthquake. Using the GNSS data,
Shinzaburo Ozawa
doaj   +2 more sources

Temperature limits to deep subseafloor life in the Nankai Trough subduction zone [PDF]

Science, 2020
Deep, hot, and more alive than we thought Marine sediments represent a massive microbial ecosystem, but we still do not fully understand what factors shape and limit life underneath the seafloor. Analyzing samples from a subduction zone off the coast of Japan, Heuer et al.
Verena B. Heuer, Fumio Inagaki, Yuki Morono, Yusuke Kubo, Arthur J. Spivack, Bernhard Viehweger, Tina Treude, Felix Beulig, Florence Schubotz, Satoshi Tonai, Stephen A. Bowden, Margaret Cramm, Susann Henkel, Takehiro Hirose, Kira Homola, Tatsuhiko Hoshino, Akira Ijiri, Hiroyuki Imachi, Nana Kamiya, Masanori Kaneko, Lorenzo Lagostina, Hayley Manners, Harry-Luke McClelland, Kyle Metcalfe, Natsumi Okutsu, Donald Pan, Maija J. Raudsepp, Justine Sauvage, Man-Yin Tsang, David T. Wang, Emily Whitaker, Yuzuru Yamamoto, Kiho Yang, Lena Maeda, Rishi R. Adhikari, Clemens Glombitza, Yohei Hamada, Jens Kallmeyer, Jenny Wendt, Lars Wörmer, Yasuhiro Yamada, Masataka Kinoshita, Kai-Uwe Hinrichs   +42 more
openaire   +7 more sources

IODP Expedition 322 Drills Two Sites to Document Inputs to The Nankai Trough Subduction Zone [PDF]

Scientific Drilling, 2010
Ocean Drilling Program were to sample and log the incoming sedimentary strata and uppermost igneous basement of the Shikoku Basin, seaward of the Nankai Trough (southwestern Japan).
Yu’suke Kubo, Saneatsu Saito, Michael B. Underwood, the IODP Expedition 322 Scientists   +3 more
doaj   +1 more source

Structural control and system-level behavior of the seismic cycle at the Nankai Trough

Earth, Planets and Space, 2020
The Nankai Trough in Southwest Japan exhibits a wide spectrum of fault slip, with long-term and short-term slow-slip events, slow and fast earthquakes, all associated with different segments down the plate interface.
Qibin Shi, Sylvain Barbot, Shengji Wei, Paul Tapponnier, Takanori Matsuzawa, Bunichiro Shibazaki   +5 more
doaj   +1 more source