Results 11 to 20 of about 688 (177)

Hydrothermal Chimney Distribution on the Endeavour Segment, Juan de Fuca Ridge [PDF]

Geochemistry, Geophysics, Geosystems, 2020
The Endeavour Segment of the Juan de Fuca Ridge is well known for its abundance of hydrothermal vents and chimneys. One‐meter scale multibeam mapping data collected by an autonomous undersea vehicle revealed 572 chimneys along the central 14 km of the ...
David A. Clague, Julie F. Martin, Jennifer B. Paduan, David A. Butterfield, John W. Jamieson, Morgane Le Saout, David W. Caress, Hans Thomas, James F. Holden, Deborah S. Kelley   +9 more
doaj   +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, Gregg PM, Nooner SL, Chadwick WW.   +3 more
europepmc   +4 more sources

Asymmetric seafloor depth across the Juan de Fuca Ridge caused by lithospheric heating

Communications Earth & Environment, 2023
Previous studies attribute asymmetries across the East Pacific Rise to horizontal temperature or pressure gradients in the deep asthenosphere caused by the Pacific Superswell, which, however, cannot explain asymmetries observed across the Juan de Fuca ...
Mengyu Wu, Michael H. Ritzwoller
doaj   +1 more source

Seismic anisotropy of the shallow crust at the Juan de Fuca Ridge [PDF]

Geophysical Research Letters, 2000
Microearthquake data recorded on four ocean bottom seismometers are used to study shear‐wave splitting on the Endeavour Segment of the Juan de Fuca Ridge. The covariance matrix decomposition method is used to determine the sensor orientation from explosive shot data and to estimate the anisotropy parameters for 238 earthquake records.
Almendros González, Francisco Javier, Barclay, Andrew H., Wilcock, William S. D., Purdy, M.   +3 more
openaire   +2 more sources

Dispersion of deep-sea hydrothermal plumes at the Endeavour Segment of the Juan de Fuca Ridge: a multiscale numerical study

Frontiers in Marine Science, 2023
A multiscale numerical framework has been developed to investigate the dispersion of deep-sea hydrothermal plumes that originate from the Endeavour Segment of the Juan de Fuca Ridge located in the Northeast Pacific.
Guangyu Xu, Christopher R. German
doaj   +1 more source

Cataclysmic hydrothermal venting on the Juan de Fuca Ridge [PDF]

Nature, 1987
Serial observations of individual submarine hydrothermal vents1 and the mapping of dilute hydrothermal plumes extending far downcurrent from vent fields2–4 indicate a stability of vent field fluid composition and mass flux on at least decadal time scales.
Baker, Edward T., Massoth, Gary J., Feely, Richard A.   +2 more
openaire   +1 more source

Chemical alteration of sediments on early stage of existing of hydrothermal systems in spreading zones of sedimented ridges (hydrothermal field “Dead Dog”, Middle Valley, Juan de Fuca Ridge) [PDF]

E3S Web of Conferences, 2019
In sediments from Holes DSDP 858B, D, F, located near the active hot vent on the thermal field “Dead Dog” in the northern part of the Juan de Fuca Ridge, Middle Valley, a redistribution of chemical elements occurs as a result of solution-rock interaction.
Khakhina Alexandra, Kurnosov Victor, Konovalov Yurii, Churkina Valeriya, Galin Konstantin   +4 more
doaj   +1 more source

Systematic shift in plume bending direction at Grotto Vent, Main Endeavour Field, Juan de Fuca Ridge implies changes in venting output along the Endeavour Segment

Frontiers in Earth Science, 2022
Analysis of the time-dependent behavior of the buoyant plume rising above Grotto Vent (Main Endeavour Field, Juan de Fuca Ridge) as imaged by the Cabled Observatory Vent Imaging Sonar (COVIS) between September 2010 and October of 2015 captures long term ...
Karen G. Bemis, Michael Zhao, Joshua Sacker, Dax C. Soule, Dax C. Soule   +4 more
doaj   +1 more source

IODP Expedition 327 and Atlantis Expedition AT 18-07: Observatories and Experiments on the Eastern Flank of the Juan de Fuca Ridge

Scientific Drilling, 2012
Integrated Ocean Drilling Program (IODP) Expedition 327 (summer 2010) was designed to resolve the nature of fluid-rock interactions in young, upper volcanic crust on the eastern flank of the Juan de Fuca Ridge. Expedition 327 drilled, cased and cored two
the IODP Expedition 327 and Atlantis Expedition AT18-07 Shipboard Parties, Hans Jannasch, Katerina Edwards, James Cowen, Katerina Petronotis, Keir Becker, C. Geoff Wheat, Jordan F. Clark, Andrew T. Fisher, Takeshi Tsuji   +9 more
doaj   +1 more source

Biodiversity and trophic ecology of hydrothermal vent fauna associated with tubeworm assemblages on the Juan de Fuca Ridge [PDF]

Biogeosciences, 2018
Hydrothermal vent sites along the Juan de Fuca Ridge in the north-east Pacific host dense populations of Ridgeia piscesae tubeworms that promote habitat heterogeneity and local diversity.
Y. Lelièvre, Y. Lelièvre, J. Sarrazin, J. Marticorena, G. Schaal, T. Day, P. Legendre, S. Hourdez, S. Hourdez, M. Matabos   +9 more
doaj   +1 more source