Results 11 to 20 of about 311 (158)
Microbiological characterization of post-eruption "snowblower" vents at Axial Seamount, Juan de Fuca Ridge [PDF]
Frontiers in Microbiology, 2013 Microbial processes within the subseafloor can be examined during the ephemeral and uncommonly observed phenomena known as snowblower venting. Snowblowers are characterized by the large quantity of white floc that is expelled from the seafloor following ...
Julie L Meyer +4 more
doaj +6 more sources
Geologic history of the summit of Axial Seamount, Juan de Fuca Ridge
Geochemistry, Geophysics, Geosystems, 2013 Multibeam (1 m resolution) and side scan data collected from an autonomous underwater vehicle, and lava samples, radiocarbon‐dated sediment cores, and observations of flow contacts collected by remotely operated vehicle were combined to reconstruct the ...
Thomas Guilderson +2 more
exaly +3 more sources
Triggering of eruptions at Axial Seamount, Juan de Fuca Ridge. [PDF]
Sci Rep, 2020 AbstractThe submarine volcano Axial Seamount has exhibited an inflation predictable eruption cycle, which allowed for the successful forecast of its 2015 eruption. However, the exact triggering mechanism of its eruptions remains ambiguous. The inflation predictable eruption pattern suggests a magma reservoir pressure threshold at which eruptions occur,
Cabaniss HE +3 more
europepmc +4 more sources
Spotlight 1: Axial Seamount [PDF]
Oceanography, 2010 Axial Seamount is a hotspot volcano superimposed on the Juan de Fuca Ridge (JdFR) in the Northeast Pacific Ocean. Due to its robust magma supply, it rises ~ 800 m above the rest of JdFR and has a large elongate summit caldera with two rift zones that ...
William Chadwick +6 more
doaj +2 more sources
Asymmetric magma plumbing system beneath Axial Seamount based on full waveform inversion of seismic data [PDF]
Nature CommunicationsThe architecture of magma plumbing systems plays a fundamental role in volcano eruption and evolution. However, the precise configuration of crustal magma reservoirs and conduits responsible for supplying eruptions are difficult to explore across most ...
Jidong Yang +8 more
doaj +2 more sources
Petrological variability of recent magmatism at Axial Seamount summit, Juan de Fuca Ridge
Geochemistry, Geophysics, Geosystems, 2013 A combined study of mapping, observational, age constraint, and geochemical data at the summit of Axial Seamount, Juan de Fuca Ridge, has revealed its recent petrological history. Multiple basalt types erupted at the summit in a time sequence.
David Clague, James Gill
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The Magnetization of an Underwater Caldera: A Time‐Lapse Magnetic Anomaly Study of Axial Seamount
Geophysical 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 +2 more sources
Frontiers in Earth Science, 2021 The δ18O values of submarine vent fluids are controlled by seawater-basalt exchange reactions, temperature of exchange, and to a lesser extent, by phase separation.
David Butterfield +2 more
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Ocean currents at Axial Volcano, a northeastern Pacific seamount [PDF]
Journal of Geophysical Research, 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
exaly +2 more sources
Geochemistry, Geophysics, Geosystems, 2018 Lava flows erupted at Axial Seamount in 1998, 2011, and 2015 are chemically heterogeneous and display decreases in MgO content in their glass rinds with increasing distance from the summit.
Michael Perfit +2 more
exaly +2 more sources