Results 51 to 60 of about 347 (171)

Modeling seismically induced deformation and fluid flow in the Nankai subduction zone [PDF]

Geophysical Research Letters, 2005
Fluid pressure changes induced by seismic strains in the Nankai subduction zone were investigated through numerical modeling. Seismic strains resulting from dislocations along fault surfaces were coupled to pore pressure generation, and subsequent transient fluid flow was simulated.
S. Ge, E. Screaton
openaire   +1 more source

Anisotropic Permeability Pathways Controlled by Intraslab Stress Heterogeneity in the Philippine Sea Slab Beneath the Ryukyu Arc

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Intermediate‐depth intraslab earthquakes in the Philippine Sea Plate occur at depths of 100–200 km beneath the Ryukyu Arc and are widely interpreted as manifestations of slab dehydration; however, the spatial variability in continuity of the volcanic front and the asymmetric distribution of volcanic activity are poorly explained by existing ...
Makoto Otsubo, Ayumu Miyakawa
wiley   +1 more source

THERMOGENIC PETROLEUM POTENTIAL OF THE NANKAI SUBDUCTION ZONE, OFFSHORE SW JAPAN [PDF]

Journal of Petroleum Geology, 2019
In the Kumano forearc basin, offshore SW Japan, the potential occurrence of hydrocarbons has been inferred from both geophysical surveys which point to the presence of natural gas hydrates, and geochemical analyses of gas samples recovered from boreholes and submarine mud volcanoes.
K. Shiraishi, Y. Yamada, T. Nibe
openaire   +1 more source

Flux and Isotopic Composition of Sedimentary Carbon Subducting Along the World's Trenches

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Here we provide comprehensive estimates for the subducted sedimentary flux of inorganic and organic carbon and δ13C at 16 trench segments worldwide. Our calculations provide minimum (incoming sediment), maximum (trench fill) and best estimates (underthrust) of carbon fluxes.
Terry Plank, Alberto Malinverno
wiley   +1 more source

Fault Volume Digital Twin to Reproduce the Full Slip Spectrum, Scaling, and Statistical Laws

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract Seismological and geodetic observations of fault zones reveal diverse slip dynamics, scaling, and statistical laws. Existing mechanisms explain some but not all of these behaviors. We show that incorporating an off‐fault damage zone—characterized by distributed fractures surrounding a main fault—can reproduce many key features observed in ...
M. Almakari, N. Kheirdast, C. Villafuerte, M. Y. Thomas, P. Dubernet, J. Cheng, A. Gupta, P. Romanet, S. Chaillat, H. S. Bhat   +9 more
wiley   +1 more source

Structural Evolution of the Eastern Nankai Trough accretionary prism, Central Japan—Subduction of Trough-Parallel Seamount Chains

Progress in Earth and Planetary Science
The Nankai Trough, offshore of Southwest Japan, represents a plate subduction zone where a long history of devastating mega-earthquake and tsunami events has been best documented.
Philomene Vanessa Eyang Ondo Ep Ella Ndong, Kohsaku Arai, Ayanori Misawa, Narumi Takahashi, Yuka Yokoyama, Asahiko Taira, Izumi Sakamoto   +6 more
doaj   +1 more source

Depth‐Integrated Boron Inventories of Subducting Oceanic Plates: New Insights From Sediments and Altered Oceanic Crust at ODP Sites 1179, 1173, and DSDP Site 443

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Boron (B) is a highly fluid‐mobile tracer of slab‐derived fluids in subduction zones; however, the quantitative comparisons of B input among different oceanic plates remain poorly constrained. Here, we present a geochemical study of the sediments, chert, and altered oceanic crust (AOC) from three DSDP/ODP Sites (443, 1173, and 1179 ...
Masaya Miyoshi, Takashi Sano, Toshiaki Hasenaka, Yasushi Mori, Takaaki Fukuoka   +4 more
wiley   +1 more source

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   +1 more source

Seismic Stratigraphy and Tectonic Evolution of the Forearc Georgia Basin (Upper Cretaceous–Miocene), Canada and USA, With Implications for CO2 Sequestration

Basin Research, Volume 38, Issue 3, May–June 2026.
2D seismic and well data reveal multi‐phase basin filling in the Whatcom Sub‐Basin shaped by syn‐depositional tectonism. An Eocene transition from forearc basin to forearc depression corresponds to decreasing normal‐fault density and throw, both upsection and eastward. Paleogene–Neogene strata are the best CO2 storage targets.
Francyne Bochi do Amarante, Shahin E. Dashtgard, Maziyar Nazemi, Andrew J. Calvert, H. Daniel Gibson   +4 more
wiley   +1 more source

2D visco-elasto-plastic subduction models in the presence of a high density and viscosity continental block: a case study for the slab geometry beneath the Kii Peninsula, southwest Japan

Progress in Earth and Planetary Science
The Philippine Sea (PHS) plate embracing the Shikoku Basin subducts with a relatively young age varying between ~ 15 and 26 Ma. It exhibits a diversity of subduction styles along the Nankai Trough, from shallow beneath Shikoku and Chugoku regions to ...
Erika Jessenia Moreno, Shoichi Yoshioka, Vlad Constantin Manea, Marina Manea, Nobuaki Suenaga   +4 more
doaj   +1 more source