Nature Search

Extensive fluid overpressure in the shallow slow earthquake zone of Nankai Trough off Muroto mapped with high-resolution P-wave velocity

Paul Caesar M. Flores
Shuichi Kodaira
Ryuta Arai
ResearchOpen Access06 Feb 2026
Scientific Reports

Volume: 16, P: 1-8
Upper-plate conduits linked to plate boundary that hosts slow earthquakes

Vertical fluid pathways in the upper plate of the Hyuga-nada subduction zone, Japan, facilitate upward fluid migration from the plate boundary that host slow earthquakes and produce seafloor mud volcanoes.

Ryuta Arai
Seiichi Miura
Kyoko Okino
ResearchOpen Access20 Sept 2023
Nature Communications

Volume: 14, P: 1-9
Structure of the tsunamigenic plate boundary and low-frequency earthquakes in the southern Ryukyu Trench

Weakly coupled subduction zones may generate earthquakes that lead to tsunamis, but their structure and seismicity are poorly constrained with the Ryukyu subduction zone as one such example. Here, Arai et al. present seismological evidence from Ryukyu showing megathrust faults and low frequency earthquakes.

Ryuta Arai
Tsutomu Takahashi
Yoshiyuki Kaneda
ResearchOpen Access22 Jul 2016
Nature Communications

Volume: 7, P: 1-7
Controlling factor of incoming plate hydration at the north-western Pacific margin

Bend faulting prior to subduction is considered to promote hydration, yet the relationship remains ambiguous. Here, via analysis of seismic surveys from the Japan and Kuril trenches junction, the authors show that pre-subduction bend faulting and post-subduction plate hydration are strongly correlated.

Gou Fujie
Shuichi Kodaira
Tomoaki Yamada
ResearchOpen Access21 Sept 2018
Nature Communications

Volume: 9, P: 1-7
Structural barriers control the spatial extent of slow earthquake slip

This study shows that slow earthquake slip in the Nankai Trough is confined by structural barriers, including fault geometry, material contrasts, and subducted ridges, revealing key controls on the potential extent of future megathrust ruptures.

Takeshi Akuhara
Kazuya Shiraishi
Masanao Shinohara
ResearchOpen Access03 Jan 2026
Nature Communications

Volume: 17, P: 1-11
Melt re-injection into large magma reservoir after giant caldera eruption at Kikai Caldera Volcano

Seismic imaging suggests a large, shallow magma reservoir existed beneath Kikai Caldera after its giant eruption, with evidence that new melt was re-injected into the same reservoir as part of what may be a common post-caldera process at large volcanoes.

Akihiro Nagaya
Nobukazu Seama
Shuichi Kodaira
ResearchOpen Access27 Mar 2026
Communications Earth & Environment

Volume: 7, P: 1-9
Seismological evidence of mantle flow driving plate motions at a palaeo-spreading centre

At oceanic spreading centres, it is unclear whether plate motions drag the underlying mantle, or mantle flow pulls the overlying plates. Seismic imaging of a former speading centre in the Pacific Plate reveals strong seismic anisotropy that was generated by mantle flowing at speeds greater than plate motions, implying that mantle flow pulled this part of the plate.

Shuichi Kodaira
Gou Fujie
Narumi Takahashi
Research30 Mar 2014
Nature Geoscience

Volume: 7, P: 371-375
Evidence for frozen melts in the mid-lithosphere detected from active-source seismic data

Akane Ohira
Shuichi Kodaira
Seiichi Miura
ResearchOpen Access17 Nov 2017
Scientific Reports

Volume: 7, P: 1-8
Topography of the subducting basement throughout the entire Nankai Trough

Kazuya Shiraishi
Yasuyuki Nakamura
Shuichi Kodaira
ResearchOpen Access30 Jul 2025
Scientific Reports

Volume: 15, P: 1-12
Physics-informed deep learning quantifies propagated uncertainty in seismic structure and hypocenter determination

Ryoichiro Agata
Kazuya Shiraishi
Gou Fujie
ResearchOpen Access13 Jan 2025
Scientific Reports

Volume: 15, P: 1-14
Mantle-derived helium released through the Japan trench bend-faults

Jin-Oh Park
Naoto Takahata
Yuji Sano
ResearchOpen Access14 Jun 2021
Scientific Reports

Volume: 11, P: 1-9
Detection of hydroacoustic signals on a fiber-optic submarine cable

Hiroyuki Matsumoto
Eiichiro Araki
Martin Karrenbach
ResearchOpen Access02 Feb 2021
Scientific Reports

Volume: 11, P: 1-12

Search

Filter By:

Search

Quick links