Analysis of Off-axis, Low-velocity Zones on the Flanks of the Endeavour Segment of the Juan de Fuca Ridge [PDF]
, 2012 Seismic data from the intermediate-spreading Endeavour segment of the Juan de Fuca Ridge reveal several crustal-level, low-velocity, high-attenuation regions on the eastern and western ridge flanks 7 to 16 km from the neovolcanic zone.
Wells, Anne, Wells, Anne
core
A 2-D tomographic model of the Juan de Fuca plate from accretion at axial seamount to subduction at the Cascadia margin from an active source ocean bottom seismometer survey [PDF]
, 2016 Author Posting. © American Geophysical Union, 2016. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution.
Canales, J. Pablo +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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Preeruptive flow focussing in dikes feeding historical pillow ridges on the Juan de Fuca and Gorda Ridges [PDF]
, 2013 Linear, hummocky pillow mound volcanism dominates at slow and intermediate spreading rate mid-ocean ridges. Volcanic hummocks are thought to be formed by low effusion rates or as a result of flow focussing during effusive fissure style eruptions in which
Caress, D. W. +4 more
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Carbon fixation by basalt-hosted microbial communities
Frontiers in Microbiology, 2015 Oceanic crust is a massive potential habitat for microbial life on Earth, yet our understanding of this ecosystem is limited due to difficulty in access. In particular, measurements of rates of microbial activity are sparse. We used stable carbon isotope
Beth N Orcutt +6 more
doaj +1 more source
Volcanoes, Plates, and Chains [PDF]
In this lesson students will discover how seamounts in the Axial-Cobb-Eikelberg-Patton chain were formed. They will learn about the processes that form seamounts, describe the movement of tectonic plates in the Gulf of Alaska region and explain the types
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Poroelastic response of mid-ocean ridge hydrothermal systems to ocean tidal loading : implications for shallow permeability structure [PDF]
, 2016 Author Posting. © American Geophysical Union, 2016. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution.
Barreyre, Thibaut, Sohn, Robert A.
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Tectonic synthesis of the Olympic Mountains segment of the Cascadia wedge, using two-dimensional thermal and kinematic modeling of thermochronological ages [PDF]
, 2001 A fully coupled two-dimensional kinematic and thermal model of a steady state accretionary wedge, constrained by an extensive data set of fission track and (U-Th)/He ages for apatite and zircon, is here used to investigate the development of the Olympic ...
Batt, Geoffrey E. +3 more
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Low-Temperature Hydrothermal Plumes in the Near-Bottom Boundary Layer at Endeavour Segment, Juan de Fuca Ridge [PDF]
Oceanography, 2012 Low-temperature (typically 5–75°C) fluid, commonly referred to as "diffuse" hydrothermal flow, emanates from fractures over a significant portion of the Juan de Fuca Ridge seafloor in the Northeast Pacific Ocean (Kelley et al., 2012, in this issue ...
Susan Hautala +4 more
doaj
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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