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ScholarsArchive at Oregon State University
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Long-term (>years) bathymetric data sets collected in six multiple near-shore sandbar
systems were analyzed with complex empirical orthogonal function analysis to quantify
intersite differences and similarities in cyclic offshore progressive bar...
2003 (iso8601)
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Phagotrophic protists are major consumers of microbial biomass in aquatic ecosystems. However, biochemical mechanisms underlying prey recognition and phagocytosis by protists are not well understood. We investigated the potential roles of cell...
2010-07-07T18:18:09Z (iso8601)
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Bransfield Strait is a Quaternary, ensialic back arc basin at the transition from rifting
to spreading. Fresh volcanic rocks occur on numerous submarine features distributed
along the rift axis, including a discontinuous neovolcanic ridge similar...
2002-08-23 (iso8601)
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The alteration of subseafloor volcanic glass from three locations is qualitatively attributed to biological
(biotic) or chemical (abiotic) reactions on the basis of microscopic morphology of the boundary between
the unaltered and altered glass....
2004-10-15 (iso8601)
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We investigate the utility of adding a 365 nm
ultraviolet (UV) light source to the ExoMars panoramic
camera (PanCam) scheduled for launch in 2013. The
modification makes it feasible to monitor rover drill
cuttings for aromatic organic molecules...
2008-06-20 (iso8601)
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We present the evolution of oceanographic conditions off the western coast of South
America between 1996 and 1999, including the cold periods of 1996 and 1998–1999 and
the 1997–1998 El Niño, using satellite observations of sea level, winds, sea...
2002-12-31 (iso8601)
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Two methods of estimating surface velocity vectors from advanced very high resolution radiometer (AVHRR) data were applied to the same set of images and the results were compared with in situ and altimeter measurements. The first method used and...
1992-06-15 (iso8601)
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We examine large-scale atmospheric behavior around the time of the spring and fall transitions in the coastal ocean off the west coast of North America. Records of adjusted sea level (ASL), coastal wind stress, sea level atmospheric pressure...
1988-12-15 (iso8601)
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A numerical model has been used to investigate the wind-driven circulation in a stratified basin of
moderate size, Lake Tahoe, California-Nevada. Two types of circulation are identified: "direct" circulations,
in which the current directions...
1986-07-15 (iso8601)
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Past measurements off the coast of central Oregon and Washington have shown that the rapid change
from northward monthly mean winter winds to southward summer winds forces a "spring transition" of
the coastal ocean: sea levels and temperatures...
1987-02-15 (iso8601)
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Seasonal cycles of coastal wind stress, adjusted sea level (ASL), shelf currents, and water
temperatures off the west coast of North America (35°N to 48°N) are estimated by fitting annual and
semiannual harmonics to data from 1981-1983. Longer...
1987-02-15 (iso8601)
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A 5-year time series of coastal zone color scanner imagery (1980-1983, 1986) is used to examine
changes in the large-scale pattern of chlorophyll pigment concentration coincident with the spring
transition in winds and currents along the west...
1989-12-15 (iso8601)
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Previously published physical and biological data document a zonally oriented frontal region within the California Current system separating colder and more eutrophic water north of ≈33°N from warmer; more stratified, and oligotrophic water...
1990-08-15 (iso8601)
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Changes in snow’s influence on surface ground temperature (SGT) could create a bias
in the borehole temperature record of climate change. Using a snow-ground thermal model
which predicts changes in the mean annual offset between SGT and surface...
2005-08-26 (iso8601)
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Underground temperatures contain a record of past
changes in the energy balance at the Earth’s surface, such
that borehole temperature data can be used to reconstruct
long-term trends of ground surface temperature (GST)
changes. In addition to...
2005-10-06 (iso8601)
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Temperature profiles from boreholes on the Colorado Plateau of southeastern Utah have been examined for evidence of climate change. Because these boreholes penetrate layered sedimentary rocks with different thermal conductivities, Bullard plots...
1995-04-10 (iso8601)
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Satellite imagery has been a useful tool in monitoring land cover changes, including changes within protected areas. In the 1980’s and 1990’s Honduras created over 100 protected areas, yet few resources have been dedicated to their management....
2010-07-08T01:24:46Z (iso8601)
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We construct an extratropical reduced temperature–depth profile for land areas north
of 20°N latitude from the global borehole temperature database compiled for climate
reconstruction. The mean reduced temperature profile compares well with a time...
2005-10-14 (iso8601)
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We examine variability observed in heat flow determinations collected on hot spot
swells. We find substantial scatter in heat flow at wavelengths of a few hundred kilometers
and less at both Hawaii and Reunion, where closely spaced data exist, and...
2007-03-23 (iso8601)
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Integrated Ocean Drilling Program (IODP) Expedition 316 Sites C0006 and C0007 examined the
deformation front of the Nankai accretionary prism offshore the Kii Peninsula, Japan. In the drilling area,
the frontal thrust shows unusual behavior as...
2009-12-29 (iso8601)
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Time series of flow were measured across the inner surf zone during a storm. These data were used to quantify the dependence of wave height (transformed from measured flow) and velocity on local slope and depth. Similar to previous studies, as...
1985-11-20 (iso8601)
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Measurements of cross-shore flow were made across the surf zone during a storm as a nearshore bar became better developed and migrated offshore. Measured infragravity band spectra were compared to synthetic spectra calculated numerically over the...
1987-08-15 (iso8601)
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A new remote sensing technique based on video image processing
has been developed for the estimation of nearshore bathymetry. The shoreward
propagation of waves is measured using pixel intensity time series collected at a
cross-shore array of...
2000-09-15 (iso8601)
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A poleward increase in phytoplankton biomass along
the West Coast of North America has been attributed to
increasing river runoff towards the north. We combine
streamflow and shelf width data with satellite-derived
estimates of phytoplankton...
2007-04-28 (iso8601)
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We present in situ electrode measurements of sediment resistivity, pore water oxygen, and pore water pH from three stations between 2300 and 3000 m depth on the Ontong-Java Plateau in the western equatorial Pacific. One of these stations is also...
1996-09 (iso8601)
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