Results 11 to 20 of about 286 (142)

Faulting and Magmatic Accretion Across the Overlapping Spreading Center Between Vance Segment and Axial South Rift, Juan de Fuca Ridge

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Plate divergence along mid‐ocean ridges is accommodated through faulting and magmatic accretion, and, at overlapping spreading centers (OSC), is distributed across two curvilinear overlapping ridge axes.
M. Le Saout, D. A. Clague, J. B. Paduan
doaj   +1 more source

Magnetic Constraints on Off‐Axis Seamount Volcanism in the Easternmost Segment of the Australian‐Antarctic Ridge

open access: yesGeochemistry, Geophysics, Geosystems, 2021
The Australian‐Antarctic Ridge (AAR) is an intermediate‐spreading rate system located between the Southeast Indian Ridge and Macquarie Triple Junction of the Australian‐Antarctic‐Pacific plates. KR1 is the easternmost and longest AAR segment and exhibits
Hakkyum Choi   +2 more
doaj   +1 more source

Variations in Volcanism and Tectonics Along the Hotspot‐Influenced Reykjanes Ridge

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Mapping and sampling four sections of the slow‐spreading Reykjanes Ridge provide insight into how tectonic and volcanic activity varies with distance from the Iceland plume.
M. Le Saout   +7 more
doaj   +1 more source

Acoustic and In‐Situ Observations of Deep Seafloor Hydrothermal Discharge: An OOI Cabled Array ASHES Vent Field Case Study

open access: yesEarth and Space Science, 2021
The Cabled Observatory Vent Imaging Sonar (COVIS) was installed on the Ocean Observatories Initiative's Regional Cabled Array observatory at ASHES hydrothermal vent field on Axial Seamount in July 2018.
Guangyu Xu   +3 more
doaj   +1 more source

The Magnetization of an Underwater Caldera: A Time‐Lapse Magnetic Anomaly Study of Axial Seamount

open access: yesGeophysical Research Letters, 2022
Axial Seamount in the northeast Pacific erupted in 2015, 2011, and 1998. Although monitored by the Regional Cabled Array of the Ocean Observatory Initiative, few magnetic surveys have been conducted over the region.
Bailey Fluegel   +4 more
doaj   +1 more source

Gibbosaverruca weijiai, a new verrucid (Crustacea, Thoracica) species from the Weijia Guyot deep-sea seamount in the West Pacific

open access: yesEuropean Journal of Taxonomy, 2021
A new species of verrucid barnacle, Gibbosaverruca weijiai sp. nov., is described and illustrated based on specimens collected from a deep-sea seamount, Weijia Guyot, in the West Pacific. This is the third barnacle species reported from Weijia Guyot. The
Zhibin Gan   +3 more
doaj   +1 more source

Ocean currents at Axial Volcano, a northeastern Pacific seamount [PDF]

open access: yesJournal of Geophysical Research: Oceans, 2003
Axial Volcano is a magmatically active seamount that straddles the Juan de Fuca Ridge (JdFR). With a summit depth of ∼1400 m, the volcano intercepts deep ocean flows at a height well above that of the linear ridge adjoining it to the north and south. Multiyear, yearlong observations of currents at Axial show that mean flow circles the seamount in an ...
J. W. Lavelle, E. T. Baker, G. A. Cannon
openaire   +1 more source

Geodetic Monitoring at Axial Seamount Since Its 2015 Eruption Reveals a Waning Magma Supply and Tightly Linked Rates of Deformation and Seismicity

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Axial Seamount is a basaltic hot spot volcano with a summit caldera at a depth of ∼1,500 m below sea level, superimposed on the Juan de Fuca spreading ridge, giving it a robust and continuous magma supply.
William W. Chadwick Jr.   +5 more
doaj   +1 more source

Individual hydrothermal vents at Axial Seamount harbor distinct subseafloor microbial communities [PDF]

open access: yesFEMS Microbiology Ecology, 2009
The microbial community structure of five geographically distinct hydrothermal vents located within the Axial Seamount caldera, Juan de Fuca Ridge, was examined over 6 years following the 1998 diking eruptive event. Terminal restriction fragment length polymorphism (TRFLP) and 16S rRNA gene sequence analyses were used to determine the bacterial and ...
Andrew D, Opatkiewicz   +2 more
openaire   +2 more sources

Crustal magnetization and the subseafloor structure of the ASHES vent field, Axial Seamount, Juan de Fuca Ridge: Implications for the investigation of hydrothermal sites

open access: yesGeophysical Research Letters, 2016
High‐resolution geophysical data have been collected using the Autonomous Underwater Vehicle (AUV) Sentry over the ASHES (Axial Seamount Hydrothermal Emission Study) high‐temperature (~348°C) vent field at Axial Seamount, on the Juan de Fuca Ridge ...
Fabio Caratori Tontini   +6 more
doaj   +1 more source

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