Results 61 to 70 of about 390 (174)

Body Wave Tomography of the Cascadia Subduction Zone and Juan de Fuca Plate System: Identifying Challenges and Solutions for Shore‐Crossing Data

Geochemistry, Geophysics, Geosystems, 2020
Recent seismic results from the Cascadia Initiative indicate that heterogeneity in the oceanic asthenosphere affects subduction dynamics. Accurate characterization of the oceanic upper mantle is thus necessary to fully understand subduction processes ...
M. Bodmer, D. R. Toomey, B. VanderBeek, E. E. Hooft, J. S. Byrnes   +4 more
doaj   +1 more source

Addressing Cascadia Subduction Zone Great Earthquake Recurrence

Eos, 2019
USGS Powell Center Cascadia Earthquake Hazards Working Group; Fort Collins, Colorado, 25–29 March ...
Lydia Staisch, Maureen Walton, Rob Witter   +2 more
openaire   +1 more source

Si- versus Mg-metasomatism at the crust–mantle interface: insights from experiments, natural observations and geochemical modeling

Progress in Earth and Planetary Science, 2023
The slab–mantle interface in subduction zones is one of the geological boundaries with the most significant chemical potential gradients, which leads to fluid-mediated metasomatic reactions and chemical transport.
Atsushi Okamoto, Ryosuke Oyanagi
doaj   +1 more source

Field and Experimental Observations Show Elevated Shear Strength of Active Margin Sediments Requires Processes Beyond Normal Consolidation

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Near‐seafloor marine sediments on active margins have been shown to be stronger than those on passive margins. However, the reasons for this are not fully understood. To investigate the role of intrinsic properties, we performed resedimentation and oedometer tests and measured undrained shear strength, grain size, mineralogy, and plasticity on
Bailey Fitzgerald, Derek E. Sawyer, Julia S. Reece, Wyatt Scott   +3 more
wiley   +1 more source

The 2021–2022 Fukushima‐Oki Earthquakes in Northeastern Japan: Dehydration Triggered Fault Reactivation Boosted by Slab Segmentation

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract The 2021–2022 Fukushima‐Oki earthquakes in northeastern Japan provide a valuable opportunity to deepen our understanding of intraslab earthquakes generated by the reactivation of subducted outer‐rise bending faults. This study integrates high‐resolution seismic velocity models with numerical modeling results to investigate the roles of slab ...
Yuyang Tan, Liangliang Wang, Mutian Qin, Jianchao Wang, Jianming Zhang, Huilin Xing, Sanzhong Li, Haijiang Zhang   +7 more
wiley   +1 more source

Pore‐Pressure Cycles and Slow Slip Generation on Mildly Velocity‐Weakening Faults

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Recent observations have revealed pore‐fluid pressure fluctuations correlated with the occurrence of slow slip events (SSEs) in several subduction zones. These fluctuations, caused by fluid accumulation and migration before and during SSEs, may modulate the timing and characteristics of these events.
Andrea Perez‐Silva, Yoshihiro Kaneko, Ting Wang   +2 more
wiley   +1 more source

High‐Rate GNSS Analysis of the Onset, Growth, and Termination of Slow Slip Events and Their Along‐Dip Variability Offshore the Boso Peninsula, Japan (2011–2024)

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.
Abstract Recurring slow slip events (SSEs) with moment magnitudes in the mid‐6 range have occurred every few years since the 1990s offshore the Boso Peninsula, Japan. These events occur near the source area of ∼M8 megathrust earthquakes beneath the Tokyo metropolitan area and are accompanied by earthquake swarms.
Riko Arai, Shiori Watanabe, Yuta Mitsui
wiley   +1 more source

The CRESCENT Generation 0 Cascadia Community Velocity Model: Constraints From the Joint Inversion of Teleseismic Receiver Functions and Ambient Noise Data

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.
Abstract The Cascadia subduction zone can produce M9+ megathrust and M6.5+ intraplate earthquakes, motivating the need for a detailed 3‐D model of seismic properties at scales relevant to regional geology, basins, and infrastructure. To construct the Generation 0 Cascadia Region Earthquake Science Center Community Velocity Model (CRESCENT CVM), we ...
Bin He, Jonathan R. Delph, Shihan Wu, Emilie E. E. Hooft, Alex Grant, Valerie J. Sahakian, Pieter‐Ewald Share, William J. Stephenson, Erin A. Wirth, Brandon Herr, Ross Maguire, Guoliang Li, Rasheed Ajala   +12 more
wiley   +1 more source

Fluid sources and overpressures within the central Cascadia Subduction Zone revealed by a warm, high-flux seafloor seep. [PDF]

Sci Adv, 2023
Philip BT, Solomon EA, Kelley DS, Tréhu AM, Whorley TL, Roland E, Tominaga M, Collier RW.   +7 more
europepmc   +1 more source

Shoreline crossing Moho geometry of the Cascadia slab: CascadiaMoho1.0

Seismica
Accurate characterization of subducting slab geometry is fundamental to understanding the distribution of earthquakes, the dynamics of arc volcanism, and the assessment of seismic hazards.
Asif Ashraf, Emilie E. E. Hooft
doaj   +1 more source