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Filtering by: Alternative title ssim Geology of Hug Point State Park, northern Oregon Coast Remove constraint Alternative title ssim: Geology of Hug Point State Park, northern Oregon Coast Has journal sim Journal of Geophysical Research Remove constraint Has journal sim: Journal of Geophysical Research

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Evolution of the Gorda Escarpment, San Andreas fault and Mendocino triple junction from multichannel seismic data collected across the northern Vizcaino block, offshore northern California

Creator:

Godfrey, Nicola J., Meltzer, Anne S., Klemperer, Simon L., Tréhu, Anne Martine, Leitner, Beate, Clarke, Samuel H., and Ondrus, Amy

Abstract:

The Gorda Escarpment is a north facing scarp immediately south of the Mendocino transform fault (the Gorda/Juan de Fuca-Pacific plate boundary) between 126°W and the Mendocino triple junction. It elevates the seafloor at the northern edge of the Vizcaino block, part of the Pacific plate, ~1.5 km above the seafloor...

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Article

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Science, Oregon State University, Corvallis. SNow at Institute of Geological and Nuclear Sciences
Benthic oxygen consumption rates during hypoxic conditions on the Oregon continental shelf: Evaluation of the eddy correlation method

Creator:

Reimers, Clare E., Özkan-Haller, H. Tuba, Berg, Peter, Devol, Allan, McCann-Grosvenor, Kristina, and Sanders, Rhea D.

Abstract:

Three stations, at ∼80 m water depth on the Oregon shelf between 44.7°N and 43.9 N, were studied under hypoxic conditions in late spring and summer of 2009 to determine benthic oxygen consumption rates. Oxygen fluxes were derived from eddy correlation (EC) measurements made from an autonomous lander deployed for...

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and challenging environment was 1College of Oceanic and Atmospheric Sciences, Oregon State University
Benthic oxygen consumption rates during hypoxic conditions on the Oregon continental shelf: Evaluation of the eddy correlation method

Creator:

Reimers, Clare E., Özkan-Haller, H. Tuba, Berg, Peter, Devol, Allan, McCann-Grosvenor, Kristina, and Sanders, Rhea D.

Abstract:

Three stations, at similar to ~80 m water depth on the Oregon shelf between 44.7 degrees N and 43.9 N, were studied under hypoxic conditions in late spring and summer of 2009 to determine benthic oxygen consumption rates. Oxygen fluxes were derived from eddy correlation (EC) measurements made from an...

Resource Type:

Article

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and challenging environment was 1College of Oceanic and Atmospheric Sciences, Oregon State University
Very long period magnetotellurics at Tucson Observatory: estimation of impedances

Creator:

Egbert, Gary D., Booker, John R., and Schultz, Adam

Abstract:

Eleven years (1932-1942) of electric potential and magnetic measurement at the Tucson observatory represent a unique very long period magnetotelluric (MT) data set. We report here on a careful reanalysis of this data using modern processing techniques. We have developed and used novel methods for separating out the quasi-periodic daily...

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. EGBERT College of Oceanography, Oregon State University, Corvallis JOHN R. BOOKER Geophysics
Observations of nearshore crescentic sandbars

Creator:

van Enckevort, I. M. J., Ruessink, B. G., Coco, Giovanni, Suzuki, K., Turner, I. L., Plant, Nathaniel G., and Holman, Robert A.

Abstract:

The temporal and spatial variability of crescentic sandbars is analyzed with hourly long-term (months) video observations collected at four barred sites and are qualitatively compared to the temporal and spatial variability predicted by hypotheses underpinning existing approaches and models for crescentic bar formation (edge-wave template model, linear stability analysis, and...

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Miyazaki (Kyushu, Japan), and from the double-barred beaches at the northern Gold Coast (Queensland
Location of the southern edge of the Gorda slab and evidence for an adjacent asthenospheric window: Results from seismic profiling and gravity

Creator:

Beaudoin, Bruce C., Hole, John A., Klemperer, Simon L., and Tréhu, Anne Martine

Abstract:

As the Mendocino Triple Junction migrates northward along the California margin it is widely presumed to leave a "slab-free" or "asthenospheric" window in its wake. A 250-km-long south-north seismic refraction-reflection profile crossing the transition from transform to subduction regimes allows us to compare and contrast crust and upper mantle of...

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Article

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, and R. J. McLaughlin, Tectonostrati- graphic terranes of the northern Coast Ranges, California, in
Nicoya Peninsula, Costa Rica: A single suite of Caribbean oceanic plateau magmas

Creator:

Sinton, Christopher W., Duncan, Robert A., and Denyer, Percy

Abstract:

The pre-Tertiary oceanic crust exposed on the west coast of Costa Pica has been broadly referred to as the Nicoya Complex. This study was designed to determine the age of the Nicoya Complex in the Nicoya Peninsula, Playa Jaco, and the Quepos Peninsula using Ar-40-Ar-39 radiometric dating and to assess...

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W. Sinton 1 and Robert A. Duncan College of Oceanic and Atmospheric Sciences, Oregon State
Magnetotelluric observations across the Juan de Fuca subduction system in the EMSLAB project

Creator:

Wannamaker, Philip E., Booker, John R., Filloux, Jean H., Jones, Alan G., Jiracek, George R., Chave, Alan D., Tarits, Pascal, Waff, Harve S., Egbert, Gary D., Young, Charles T., Stodt, John A., Martinez, Mario G., Law, Lawrie K., Yukutake, Takesi, Segawa, Jiro S., White, Anthony, and Green, A.W.

Abstract:

A magnetotelluric (MT)transect has been obtained near latitude 45øN from the active Juan de Fuca Spreading center, across the subduction zone and Cascades volcanic arc, and into the back arc Deschutes Basin region. This paper presents the MT data set and describes its major characteristics as they pertain to the...

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]. Because the profile crosses the northern Oregon coast near the town of Lincoln City, it is referred to
Petrology and Geochemistry of the Galápagos Islands : portrait of a pathological mantle plume

Creator:

White, William M., McBirney, Alexander R., and Duncan, Robert A.

Abstract:

We report new major element, trace element, isotope ratio, and geochronological data on the Galapagos Archipelago. Magmas erupted from the large western volcanos are generally moderately fractionated tholeiites of uniform composition; those erupted on other islands are compositionally diverse, ranging from tholeiites to picritic basanitoids. While these volcanoes do not...

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. DUNCAN College of Oceanography, Oregon State University, Corvallis We report new major element, trace
Temporal variability of suspended matter in Astoria Canyon

Creator:

Plank, William S., Zaneveld, J. Ronald, and Pak, Hasong

Abstract:

Suspended matter in Astoria canyon was monitored by means of an in situ nephelometer and by means of light-scattering and particle concentration measurements performed aboard ship on water samples. Nephelometer profiles obtained along the axis of the canyon in February and April 1973 indicate that the canyon is divided into...

Resource Type:

Article

Full Text:

. Carlson, P. R., Marine geology of Astoria submarine canyon, Ph.D. thesis, 259 pp., Oregon State Univ

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Egbert, Gary D.3
Berg, Peter2
Booker, John R.2
Devol, Allan2
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