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Showing 1 to 20 of 67 for “"East Pacific Rise"”.
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The seismic attenuation structure of the East Pacific Rise
… ridge. The experiment location at 9°30'N on the East Pacific Rise is the site of a strong mid-crustal seismic reflector which has been inferred to be the roof of a small axial magma chamber at about 1.6 km depth. A spectral method is used to estimate t*, a measure of the integrated attenuation …
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Hydrothermal sulfide deposits on the East Pacific Rise, 21NÌŠ
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Science, 1982.
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The seismic attenuation structure of the East Pacific Rise
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1992.
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Seismic constraints on shallow crustal processes at the East Pacific Rise
… refraction experiments carried out over young East Pacific Rise (EPR) crust. The experiments are unusual in that both the source and receiver are located within a few meters of the seafloor, allowing high-resolution determinations of shallow crustal structure. Three experiments were located …
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Seismic constraints on shallow crustal processes at the East Pacific Rise
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1994.
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Tectonics of the East Pacific rise : studies of faulting characteristics and magnetic and gravity anomalies
… on the surface of the Earth. In this system, the East Pacific Rise (EPR) is the fastest spreading ridge and is thus considered as the most active magmatically among the plate boundaries. In January and February of 1988, an extensive survey by the Massachusetts Institute of Technology and the Woods …
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Influence of hydrodynamics on the larval supply to hydrothermal vents on the East Pacific Rise
… vent gastropod larvae along the northern East Pacific Rise. Daily and weekly variability in the supply of hydrothermal vent gastropod larvae to two hydrothermal vents, 1.6 km apart on the East Pacific Rise, were quantified concurrently with current velocity observations. The magnitude and …
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Influence of hydrodynamics on the larval supply to hydrothermal vents on the East Pacific Rise
… vent gastropod larvae along the northern East Pacific Rise. Daily and weekly variability in the supply of hydrothermal vent gastropod larvae to two hydrothermal vents, 1.6 km apart on the East Pacific Rise, were quantified concurrently with current velocity observations. The magnitude and …
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Tectonics of the East Pacific rise : studies of faulting characteristics and magnetic and gravity anomalies
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1995.
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Temporal and petrogenetic constraints on volcanic accretionary processes at 9-10 degrees north East Pacific Rise
Volcanic accretion at the fast-spreading East Pacific Rise (EPR) occurs over a ~2-4 km wide neo-volcanic zone on either side of the axial summit trough (AST). Eruption ages are critical for understanding the distribution and timing of volcanic and magmatic activity. Uranium series nuclides are …
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Biotic and abiotic interactions of deep-sea hydrothermal vent-endemic fish on the East Pacific Rise
… of fish endemic to hydrothermal vents on the East Pacific Rise was undertaken utilizing a variety of techniques, focusing on the bythitid Thermichthys hollisi. Stable isotope and gut content analyses were used to elucidate prey choice and trophic relationships. Otolith chemical signatures were …
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Influence of Mesoscale Eddies on the Deep Ocean Dynamics over the East Pacific Rise near 10N
… moored instruments located near the crest of the East Pacific Rise (EPR) between 9 and 10N. First, the relationship between mesoscale eddies and subinertial flows in the deep ocean over the EPR were examined. The subinertial velocities at depth are significantly correlated with geostrophic …
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Temporal and petrogenetic constraints on volcanic accretionary processes at 9-10 degrees North East Pacific Rise
Volcanic accretion at the fast-spreading East Pacific Rise (EPR) occurs over a ~2-4 km wide neo-volcanic zone on either side of the axial summit trough (AST). Eruption ages are critical for understanding the distribution and timing of volcanic and magmatic activity. Uranium series nuclides are …
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Biotic and abiotic interactions of deep-sea hydrothermal vent-endemic fish on the East Pacific Rise
… of fish endemic to hydrothermal vents on the East Pacific Rise was undertaken utilizing a variety of techniques, focusing on the bythitid Thermichthys hollisi. Stable isotope and gut content analyses were used to elucidate prey choice and trophic relationships. Otolith chemical signatures were …
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Spatial and temporal population genetics at deep-sea hydrothermal vents along the East Pacific Rise and Galápagos Rift
… pachyptila have been well documented along the East Pacific Rise and the Galápagos Rift. To analyze spatial and temporal population genetic patterns and the processes governing them at ephemeral and disjunct habitats, a suite of 12 highly variable microsatellite DNA markers were developed for …
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Spatial and temporal population genetics at deep-sea hydrothermal vents along the East Pacific Rise and Galápagos Rift
… pachyptila have been well documented along the East Pacific Rise and the Galápagos Rift. To analyze spatial and temporal population genetic patterns and the processes governing them at ephemeral and disjunct habitats, a suite of 12 highly variable microsatellite DNA markers were developed for …
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Chemistry of submarine hydrothermal solutions at 21 Ìnorth, East Pacific Rise and Guaymas Basin, Gulf of California
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, 1984.
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Numerical Modeling of the Hydrothermal System at East Pacific Rise (EPR) 9 Degrees 50' N Including Anhydrite Precipitation
… numerical code. The simulations focus on East Pacific Rise hydrothermal system at 950N due to availability of key observational data to constrain the models. Seismicity data that is available suggests that fluid flow is primarily along axis and that recharge is focused into a small zone …
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Trace element distributions in ridge flank sediments from the east Pacific Rise, and their use as proxies of past ocean conditions
The eastern equatorial and tropical Pacific regions are areas of significant carbon fluxes from the<br/>atmosphere to the ocean interior. Changes in the function of marine biogeochemical cycles in this<br/>region potentially exert an important control on global climate. Understanding controls on …
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A Parameterized Approach to Partitioning Between Focused and Diffuse Heat Output and Modeling Hydrothermal Recharge at The East Pacific Rise 9°50´N
… to investigate hydrothermal recharge at the East Pacific Rise 9°50′ N hydrothermal site. Using a 1-D model of recharge through an area of 10⁵ m² elucidated by microseismicity in the oceanic crust I find that anhydrite precipitation is likely to result in rapid sealing of pore space in the …
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