Results 61 to 70 of about 3,084 (214)

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

Improving Detectability of Seafloor Deformation From Bottom Pressure Observations Using Numerical Ocean Models

Frontiers in Earth Science, 2021
We investigated ocean bottom pressure (OBP) observation data at six plate subduction zones around the Pacific Ocean. The six regions included the Hikurangi Trough, the Nankai Trough, the Japan Trench, the Aleutian Trench, the Cascadia Subduction Zone ...
Yoichiro Dobashi, Daisuke Inazu
doaj   +1 more source

Styles of underplating in the Marin Headlands Terrane, Franciscan Complex, California [PDF]

, 2018
This is a pre-copy-editing, author-produced PDF of an article accepted for publication in The Geological Society of America Special Papers following peer review. The definitive publisher-authenticated version: "Regalla, C., Rowe, C., Harrichhausen, N.,
Harrichhausen, Nicholas, Regalla, Christine, Rowe, Christie, Singh, Jyotsana, Tarling, Matthew   +4 more
core  

Sustainable thermogenic CH4 and H2 generation in the Nankai Trough subduction zone

, 2023
Abstract Mud volcanoes, gas plumes, and gas hydrates comprising thermogenic and biogenic CH4 are widely distributed in the Nankai Trough subduction zone, showing ongoing significant CH4 activity. However, the source rocks of the thermogenic CH4 and the geological source of H2 for microbial CH4 production remain uncertain.
Noriyuki Suzuki, Koutaro Koike, Jun Kameda, Gaku Kimura   +3 more
openaire   +1 more source

Characteristics of Seismic Energy Rate Functions of Shallow Tremors

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract We investigated the energy rate functions of shallow tremors southeast of the Kii Peninsula in the Nankai subduction zone. Unimodal functions (triangle or bell‐shaped) explain the characteristics of small (<104 J) shallow tremors. As the seismic radiated energy increases, the energy rate functions become more complex and are better ...
Shunsuke Takemura, Suguru Yabe
wiley   +1 more source

Fluid circulation in the depths of accretionary prisms: an example of the Shimanto Belt, Kyushu, Japan [PDF]

, 2015
International audienceAccretionary prisms constitute ideal targets to study fluid circulation and fluid-rock interactions at depths beyond the reach of active margin deep drilling.
Augier, Romain, Famin, Vincent, Kimura, Gaku, Palazzin, Giulia, Raimbourg, Hugues, Ramboz, Claire, Vacelet, Maxime, Yamaguchi, Asuka   +7 more
core   +3 more sources

P wave anisotropic tomography of the Nankai subduction zone in Southwest Japan

Geochemistry, Geophysics, Geosystems, 2012
The active subduction of the young Philippine Sea (PHS) plate and the old Pacific plate has resulted in significant seismic heterogeneity and anisotropy in Southwest (SW) Japan. In this work we determined a detailed 3‐D P wave anisotropic tomography of the crust and upper mantle beneath SW Japan using ∼540,000 P wave arrival times from 5,249 local ...
Jian Wang, Dapeng Zhao
openaire   +1 more source

Comparative Analysis of Seismicity Across Three Depth‐Dependent Slip Regimes in the Japan Trench Subduction Zone

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Understanding the cause of spatial variations in seismicity is crucial for comprehending the physics governing earthquake activity. Off Iwate, in the northern Japan Trench subduction zone, the plate boundary can be divided into three distinct zones based on depth‐dependent slip regimes: the slow earthquake, asperity, and stable creeping zones.
Yuta Ito, Tomoaki Nishikawa, Yoshihiro Ito, Shukei Ohyanagi, Hiroyuki Noda   +4 more
wiley   +1 more source

Interpretation of porosity and LWD resistivity from the Nankai accretionary wedge in light of clay physicochemical properties: Evidence for erosion and local overpressuring [PDF]

, 2011
International audienceIn this study, we used porosity to assess the compaction state of the Nankai accretionary wedge sediments and any implications for stress and pore pressure.
Archie, Bangs, Bourlange, Bray, Brown, Bussian, Chang, Clavier, Colten-Bradley, Dahlen, Doan, Glover, Gordon, H. Raimbourg, Hart, Hashimoto, Henry, Henry, Henry, Hubbert, Karig, Kinoshita, Le Pichon, Leroy, M. Conin, Miyazaki, Moore, Moore, Moore, Moore, Orsini, P. Henry, Park, Raimbourg, Ransom, Revil, Rubey, S. Bourlange, Saffer, Scholz, Screaton, Screaton, Sen, Seno, Song, Strasser, T. Reuschlé, Underwood   +47 more
core   +4 more sources

HypoNet Nankai: Rapid Hypocenter Determination Tool for the Nankai Trough Subduction Zone Using Physics-Informed Neural Networks

Seismological Research Letters
Abstract Accurate hypocenter determination in the Nankai trough subduction zone is essential for hazard assessment and advancing our understanding of seismic activity in the region. Therefore, a handy hypocenter determination tool incorporating a realistic 3D velocity structure, accessible to the scientific community, is beneficial.
Ryoichiro Agata, Satoru Baba, Ayako Nakanishi, Yasuyuki Nakamura   +3 more
openaire   +2 more sources