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ScholarsArchive at Oregon State University
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Thirty-two chemoheterotrophic bacteria were isolated from unsaturated subsurface soil samples obtained
from ca. 70 m below land surface in a high desert in southeastern Idaho. Most isolates were gram positive
(84%) and strict aerobes (79%)....
1989-09 (iso8601)
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Methane hydrate found in marine sediments is thought to contain gigaton quantities of methane and is
considered an important potential fuel source and climate-forcing agent. Much of the methane in hydrates is
biogenic, so models that predict the...
2008-06 (iso8601)
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PCR amplification, restriction fragment length polymorphism, and phylogenetic analysis of oxygenase genes
were used for the characterization of in situ methane- and ammonia-oxidizing bacteria from free-living and
attached communities in the...
2005-04 (iso8601)
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Bench scale column studies were used to examine the partitioning of microorganisms between groundwater
and a geologic medium and to examine the effect of hydrogeology (i.e., porous- versus fracture-flow) on
organism partitioning. Replicated...
2001-06 (iso8601)
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The bacteria colonizing geologic core sections (attached) were contrasted with those found suspended in the
groundwater (unattached) by examining the microbiology of 16 depth-paired core and groundwater samples
using a suite of culture-independent...
2001-05 (iso8601)
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We isolated a methanogen from deep in the sediments of the Nankai Trough off the eastern coast of Japan.
At the sampling site, the water was 950 m deep and the sediment core was collected at 247 m below the sediment
surface. The isolated...
2003-06 (iso8601)
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Microbial communities in cores obtained from methane hydrate-bearing deep marine sediments (down to
more than 300 m below the seafloor) in the forearc basin of the Nankai Trough near Japan were characterized
with cultivation-dependent and...
2002-08 (iso8601)
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Genomic libraries derived from environmental DNA (metagenomic libraries) are useful for characterizing
uncultured microorganisms. However, conventional library-screening techniques permit characterization of
relatively few environmental clones....
2003-08 (iso8601)
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Surface heat flux components are estimated at a midshelf site over
the northern California shelf using moored measurements from the 1981-1982
Coastal Ocean Dynamics Experiment (CODE) and the 1988-1989 Shelf Mixed
Layer Experiment (SMILE). Time...
1998-09-15 (iso8601)
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The connectivity among straits of the northwest Pacific marginal seas is investigated
with a primitive-equation ocean circulation model simulated for 10 years from 1994 to
2003. Over the simulation interval the temporal and spatial means and...
2009-06-19 (iso8601)
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We discuss connections between inner-shelf and mid-shelf circulation near Point
Conception, California, as well as the wind forcing of inner-shelf circulation. Point
Conception marks the southern edge of a major upwelling zone that extends from...
2005 (iso8601)
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Heat and salt balances are estimated over the northern California shelf from
early December 1988 through late February 1989 (winter) and from early March
through early May 1989 (spring) from moored meteorological and oceanographic time
series...
1994-08-15 (iso8601)
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Argos-tracked drifters are used to study the near-surface circulation in
the Santa Barbara Channel. The mean consists of a cyclonic cell in the western
Santa Barbara Channel with weaker flow in the eastern Channel. Drifter mean
velocities agree...
1998-10-15 (iso8601)
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Along- and cross-shelf correlation scales of subtidal cross-shelf (u) and alongshelf
(ν) velocities are estimated using moored records from several field programs over
the northern California shelf. Over record lengths of 4-6 months, along-shelf...
1997-04-15 (iso8601)
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The northern California Current System is impacted by two primary freshwater
sources: the Strait of Juan de Fuca and the Columbia River. The Columbia is frequently
bidirectional in summer, with branches both north and south of the river mouth...
2009 (iso8601)
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The thermal properties of sediment and the albedo are critical in calculating the heat
flux of a tidal flat. However, they are not well known because of the difficulties of
sampling and observing tidal flats. We use extensive field observations of...
2007-12-19 (iso8601)
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Realistic hindcast of the Columbia River estuarine-plume-shelf circulation in summer
2004 using the Regional Ocean Modeling System nested within the Navy Coastal Ocean
Model (NCOM) is quantitatively evaluated with an extensive set of observations....
2009 (iso8601)
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In north and central California, equatorward winds drive equatorward flows
and the upwelling of cold dense water over the shelf during the midspring and summer
upwelling season. When the winds temporarily weaken, the upwelling flows between
Point...
2009 (iso8601)
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The near-surface circulation in the Santa Barbara Channel and off the coast of central and southern California is described based on 20 releases of drifters
drogued 1 m beneath the surface from 12 sites within the channel at bimonthly
intervals....
1999-07-15 (iso8601)
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The coastal circulation in the Santa Barbara Channel (SBC) and the southern central
California shelf is described in terms of three characteristic flow patterns. The upwelling
pattern consists of a prevailing equatorward flow at the surface and at...
2003-02-06 (iso8601)
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A new class of nearshore waves based on the shear instability of a steady longshore current is discussed. The
dynamics depend on the conservation of potential vorticity but with the background vorticity field, traditionally
the role of Coriolis in...
1989-12-15 (iso8601)
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We present an optical method (optical current meter) to measure the longshore
component of nearshore surface currents by measuring the alongshore drift of persistent
sea foam in the surf zone. The method uses short time series of video data...
2003 (iso8601)
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This paper presents a comprehensive set of velocity and suspended sediment
observations in the nearshore wave bottom boundary layer, collected during the Duck94
field experiment on the Outer Banks of the North Carolina coast. Cross-shore velocity...
2000-08-15 (iso8601)
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Accurately estimating the vertical flux of material
reaching the seafloor from the overlying surface waters is
essential for the paleoceanographic reconstruction of a wide
variety of oceanic processes. Two approaches are currently
being used. One...
2007-03-06 (iso8601)
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Chemical and biological sensor technologies have advanced rapidly in the past five years. Sensors that require low power and operate for multiple years are now available for oxygen, nitrate, and a variety of bio-optional properties that serve as...
2009-09 (iso8601)
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