Results 31 to 40 of about 286 (142)
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.
David A. Clague +6 more
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Frontiers in Microbiology, 2016 Thermophilic methanogens are common autotrophs at hydrothermal vents, but their growth constraints and dependence on H2 syntrophy in situ are poorly understood.
Begüm D. Topçuoğlu +6 more
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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
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Probing earthquake triggering by static and dynamic stresses at Axial Seamount
, 2023 The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Tan, Y. +6 more
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Geophysical Research LettersTemporal changes in seismic velocity estimated from ambient seismic noise can be utilized to infer subsurface properties at volcanic systems. In this study, we process 7 years of continuous seismic noise at Axial Seamount and use cross‐correlation ...
Michelle K. Lee +4 more
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Geochemistry, Geophysics, Geosystems, 2018 The 2015 eruption at Axial Seamount, an active volcano at a depth of 1500 m in the Northeast Pacific, marked the first time a seafloor eruption was detected and monitored by an in situ cabled observatory—the Cabled Array, which is part of the Ocean ...
Guangyu Xu +4 more
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Drift‐corrected seafloor pressure observations of vertical deformation at Axial Seamount 2013–2014 [PDF]
Earth and Space Science, 2016 AbstractAxial Seamount on the Juan de Fuca Ridge is a site of ongoing volcanic activity. The vertical component of the deformation can be observed with ambient seawater pressure gauges, which have excellent short‐term resolution. However, pressure gauge drift adds additional and significant uncertainty in estimates of long‐period deformation; drift ...
G. Sasagawa, M. J. Cook, M. A. Zumberge
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Seafloor Electromagnetic Measurements above Axial Seamount, Juan de Fuca Ridge
Journal of geomagnetism and geoelectricity, 1997 Magnetotelluric (MT) data were collected at three sites around the eastern rim of the caldera of Axial Seamount, on the Juan de Fuca Ridge. The seamount has been observed to be volcanically and hydrothermally active over the last ten years, and is therefore an excellent target for electromagnetic induction studies on the seafloor. This paper follows an
S. C. Constable +3 more
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Geophysical Research Letters, 2016 The crust and upper mantle seismic structure, spanning from the Juan de Fuca and Gorda spreading centers to the Cascade back arc, is imaged with full‐wave propagation simulation and a joint inversion of ambient noise and regional earthquake recordings ...
Haiying Gao
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Seismic precursors and magma ascent before the April 2011 eruption at Axial Seamount [PDF]
Nature Geoscience, 2012 For volcanoes at submarine rift zones, a direct link between seismicity, seafloor deformation and magma intrusion has not been demonstrated. Recordings from ocean-bottom hydrophones and bottom-pressure recorders map an increasing rate of seismicity at Axial Seamount, northeast Pacific, over several years before its eruption in April 2011.
Dziak, R. P. +7 more
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