Results 61 to 70 of about 311 (158)

Acoustic noise measurements on Axial Seamount, Juan De Fuca Ridge

Geophysical Research Letters, 1986
Anomalously high ambient acoustic noise was observed within the caldera of Axial Seamount, located on the Juan de Fuca Ridge at 46°N. Noise spectra from 2 to 30 Hz were calculated from hydrophone signals from four separate seismic recording systems. Noise levels varied up to 25 dB over 6 km.
L. D. Bibee, R. S. Jacobson
openaire   +1 more source

Submarine Flank Collapses at Tagoro Volcano: Insights From Bathymetric Surveys and 3D Multiphase Simulations

Journal of Geophysical Research: Oceans, Volume 131, Issue 8, August 2026.
Abstract Volcanic islands are prone to flank instabilities that can generate tsunamis even when mobilized volumes are moderate. This study investigates submarine collapses during the 2011–2012 eruption south of El Hierro, which built the Tagoro submarine volcano.
E. P. Montellà, A. Romano, G. Barajas, J. A. Lozano, J. T. Vázquez, J. L. Lara, E. Fraile‐Nuez   +6 more
wiley   +1 more source

Assessment of a Finite Volume Discretization of the Horizontal Pressure Gradient Force Beneath Sloping Ice Shelves

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 8, August 2026.
Abstract The accurate computation of pressure gradients in ocean models is essential for simulating ocean and climate processes. Inaccurate computation can result in spurious velocities on the order of real ocean flows, particularly in quiescent ice shelf cavities.
C. K. Yung, R. W. Hallberg, A. Adcroft, A. K. Morrison   +3 more
wiley   +1 more source

Dynamic Evolution of Forearc Subsidence Controlled by Slab Geometry

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Several subduction zones worldwide present an enigmatic forearc topography and strain characterized by extension at a forearc ridge near the trench and shortening within a forearc valley located between the ridge and the magmatic arc. The development of this topography has been linked to progressive slab steepening, while strain patterns ...
F. Bolrão, W. P. Schellart
wiley   +1 more source

The Next Decade of Observations at Axial Seamount: A Geophysical Perspective

, 2020
The Ocean Observatories Initiative Cabled Array (OOI-CA) is a 25-year facility that provides unprecedented power and communications at Axial Seamount and sites on the Cascadia continental margin. Although the OOI is sometimes viewed as too expensive, the CA provides two capabilities that would be infeasible in autonomous configurations.
openaire   +1 more source

Seafloor Displacements Across the Mid‐Ocean Ridge Eruption Cycle Modulated by Mush Zone Viscosity

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Mid‐ocean ridges (MORs) are active volcanic systems where axial magma lenses (AMLs) are replenished on decadal time scales, enabling frequent dike intrusions. The associated seafloor deformation, however, remains scarcely understood. Here we assess this deformation by simulating cycles of steady AML inflation followed by instantaneous dike ...
H. Boulze, J.‐A. Olive
wiley   +1 more source

Earthquake Seismicity Reveals the Location and Significance of the Shona Mantle Plume in the South Atlantic Ocean

Geophysical Research Letters
The South Atlantic Ocean hosts several well‐studied volcanic ridges and seamount chains, but the origin of their associated mantle plumes is debated.
Ross Parnell‐Turner
doaj   +1 more source

Along the Benthic to Holoplanktonic Continuum: Seafloor Affinity Increases Distance‐Decay Rates Among Abyssal Communities

Global Ecology and Biogeography, Volume 35, Issue 8, August 2026.
ABSTRACT Aim Marine species ranges are often large, contributing to relatively high community similarity over space, with decreased ranges expected among taxa that have lower dispersal and/or higher substrate requirements. We tested for a weakening of biogeographic structuring among dispersing abyssal taxa along the benthic to holoplanktonic habitat ...
Gabrielle N. Ellis, Oliver Kersten, Eric Vetter, Craig R. Smith, Jeffrey C. Drazen, Erica Goetze   +5 more
wiley   +1 more source

Axial Seamount Eruption Forecasting Experiment

We introduce the Axial Seamount Eruption Forecasting Experiment (EFE), a real-time initiative designed to test the predictability of volcanic eruptions through a transparent, physics-based framework. The experiment is inspired by the Financial Bubble Experiment, adapting its principles of digital authentication, timestamped archiving, and delayed ...
Lei, Qinghua, Sornette, Didier, Chadwick Jr., William W., Nooner, Scott L., Zhang, Maochuan, Wilcock, William S. D.   +5 more
openaire   +2 more sources

Mid‐Ocean Ridge (MOR) Ash Dispersal on Axial Seamount, Juan de Fuca Ridge

Geochemistry, Geophysics, Geosystems
Rare eruption of primitive normal mid‐ocean ridge basalt (N‐MORB) magma (∼9.5 wt% MgO) on the summit of Axial Seamount generated abundant ash that was dispersed for several km.
Ryan A. Portner, Guangyu Xu, Arran P. Murch, David A. Clague, Brian M. Dreyer, Jennifer B. Paduan   +5 more
doaj   +1 more source