Results 131 to 140 of about 688 (177)

Microbial metabolic potential of hydrothermal vent chimneys along the submarine ring of fire. [PDF]

Front Microbiol
Murray L, Fullerton H, Moyer CL.
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Tectonic structures on the Juan de Fuca Ridge

Geological Society of America Bulletin, 1977
The northern Juan de Fuca Ridge is an actively spreading part of the East Pacific Rise system that is flooded with young turbidite sediments from the nearby continental margin. A detailed geophysical survey was completed at the intersection of the ridge with the Sovanco Fracture Zone.
E. E. DAVIS, C.R.B. LISTER
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Propagation as a mechanism of reorientation of the Juan de Fuca Ridge

Journal of Geophysical Research: Solid Earth, 1984
We present a revised model of the tectonic evolution of the Juan de Fuca ridge by propagating rifting. The new model has three different relative rotation poles, covering the time intervals 17.0–8.5 Ma, 8.5–5.0 Ma, and 5.0 Ma to the present. The rotation pole shifts at 8.5 and 5.0 Ma imply clockwise shifts in the direction of relative motion of 10° to ...
Douglas S. Wilson, Richard N. Hey, Clyde Nishimura   +2 more
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The distribution of geothermal fields on the Juan de Fuca Ridge

Journal of Geophysical Research: Solid Earth, 1985
Near bottom water temperatures were mapped along 400 km of the strike of the Juan de Fuca Ridge as part of a combined Sea MARC/Seabeam experiment to image the variability of morphology and structure along a spreading center segment. The water temperature data collected by a continuously towed thermistor chain, in addition to salinity data, indicate ...
Kathleen Crane, Frank Aikman, Robert Embley, Steve Hammond, Alexander Malahoff, John Lupton   +5 more
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Hydrothermal effects west of the Juan de Fuca Ridge

Deep Sea Research Part I: Oceanographic Research Papers, 1993
The Juan de Fuca Ridge in the northeast Pacific Ocean is a region of extensive hydrothermal activity, and plumes emanating from the ridge can be dispersed by the oceanic circulation at about 2000 m. Off-axis temperature-salinity characteristics and water-property maps suggest a history of variability in hydrothermal activity on the ridge.
Glenn A. Cannon, David J. Pashinski, Michael R. Lemon   +2 more
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EMRIDGE: The electromagnetic investigation of the Juan de Fuca Ridge

Marine Geophysical Researches, 1993
From July to November 1988, a major electromagnetic (EM) experiment, known as EMRIDGE, took place over the southern end of the Juan de Fuca Ridge in the northeast Pacific. It was designed to complement the previous EMSLAB experiment which covered the entire Juan de Fuca Plate, from the spreading ridge to subduction zone.
G. S. Heinson, A. White, L. K. Law, Y. Hamano, H. Utada, T. Yukutake, J. Segawa, H. Toh   +7 more
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Hydrological response to a seafloor spreading episode on the Juan de Fuca ridge

Nature, 2004
Seafloor hydrothermal systems are known to respond to seismic and magmatic activity along mid-ocean ridges, often resulting in locally positive changes in hydrothermal discharge rate, temperature and microbial activity, and shifts in composition occurring at the time of earthquake swarms and axial crustal dike injections. Corresponding regional effects
Earl, Davis, Keir, Becker, Robert, Dziak, John, Cassidy, Kelin, Wang, Marvin, Lilley   +5 more
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Introduction to Juan de Fuca Ridge Special Section

Journal of Geophysical Research: Solid Earth, 1987
The U.S. Geological Survey and several other institutions have been studying the southernmost segment of the Juan de Fuca Ridge for several years by almost every means available to marine geologists and geophysicists [e.g., Normark et al., this issue].
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