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ScholarsArchive at Oregon State University
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Although much work has been done on active tectonics of eastern Tibet, little is known about the Longriba fault zone and its role in strain partitioning. Whether its two sub-parallel strands (Longriqu and Maoergai faults) can rupture...
2013-04-29 (iso8601)
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This study shows that simulations of bottom-trapped plumes in periodic or closed domains generate a spurious cyclonic current that arrests the natural tendency of the plume to move upstream. Furthermore, it also shows that attempts to obstruct the...
2013-05 (iso8601)
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As currents flow over rough topography, the pressure difference between the up-and downstream sides results in form drag-a force that opposes the flow. Measuring form drag is valuable because it can be used to estimate the loss of energy from...
2013-06 (iso8601)
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Formation of cirrus clouds depends on the availability of ice nuclei to begin condensation of atmospheric water vapor. Although it is known that only a small fraction of atmospheric aerosols are efficient ice nuclei, the critical ingredients that...
2013-05-09 (iso8601)
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We sought to improve net ecosystem exchange (NEE) estimates for a tall,
dense, mature Douglas-Fir forest in the Oregon Coast range characterized by
weak flows, systematic wind directional shear, and limited turbulent mixing
throughout the diurnal...
2013-05-15 (iso8601)
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The 2008-2009 eruption of Chaitén Volcano (Chile) involved a variety of volcanic and associated hydrologic
processes that damaged nearby forests. These processes included coarse (gravel) and fine (silt to sand) tephra fall, a
laterally directed...
2013-04-16 (iso8601)
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Detailed insight into natural variations of the greenhouse gas nitrous oxide (N₂O) in response to changes in the Earth's climate system is provided by new measurements along the ice core of the North Greenland Ice Core Project (NGRIP). The...
2013-05-15 (iso8601)
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The Yanacocha mining district is located in the Andes of northern Peru in an area of
relatively thick continental crust (~35 km) and long-lived Cenozoic subduction-related
volcanism. Volcanic activity in the district began at ~20 Ma, and gold...
2013-05 (iso8601)
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Turbulence measurements for very stable conditions near the surface are contrasted
among three sites: a high altitude basin during winter with grass or snow-covered
grass, a broad valley with complex agricultural land use, and a more narrow valley...
2013-05 (iso8601)
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Small-scale land acquisitions are transforming long-standing human-land relations in West Africa. In particular, high rates of urban population growth lead to the transfer of land from non-market customary tenure systems to market-based, formal...
2013-05 (iso8601)
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Lipid biomarkers in sediments are widely used to infer environmental conditions that have
occurred in the geological past, but these reconstructions require a careful consideration of the
biotic and abiotic processes that degrade and alter the...
2013-06 (iso8601)
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As GIS becomes more prominent in academic classrooms at all levels of education, the subject of geography and its related disciplines can be approached with a geospatial technology perspective, using new tools and lesson plans. The implementation...
2013-06 (iso8601)
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We sought to characterize the distribution of juvenile walleye pollock Theragra
chalcogramma in an area of intense predator−prey interactions and to describe habitat features
that lead to their observed distributions. The distribution of juvenile...
2013-06-12 (iso8601)
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Climate sensitivity is generally studied using two types of models. Atmosphere-ocean general circulation models (AOGCMs) include interactive ocean dynamics and detailed heat uptake. Atmospheric GCMs (AGCMs) with slab ocean models (SOMs) cannot...
2013-06 (iso8601)
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Recent studies of estuarine sediment deposits have focused on grain size spectra as a tool to better
understand depositional processes, in particular those associated with tidal inlet and basin dynamics.
The key to accurate interpretation of...
2013-07-10 (iso8601)
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Holocene turbidites from turbidite channel systems along the active tectonic continental
margins of the Cascadia Subduction Zone (offshore Vancouver Island to Mendocino Triple
Junction) and the northern San Andreas Transform Fault (the Triple...
2013-02-01 (iso8601)
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While bubble plumes have been acoustically imaged in the water column above marine gas
hydrate deposits in many studies, little is known about the temporal variation in plume intensity. In
July 2008, we conducted surveys using 3.5 and 12 kHz...
2013-04-15 (iso8601)
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Abstract: Coastal upwelling zones may be at enhanced risk from ocean acidification as upwelling brings low aragonite saturation state (Ω[subscript Ar]) waters to the surface that are further suppressed by anthropogenic CO₂. Ω[subscript Ar] was...
2013-06-06 (iso8601)
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Despite being well adapted for feeding in cold water on their North Atlantic feeding
grounds, Atlantic bluefin tuna undertake long migrations to reach warm, low productivity spawn -
ing grounds in the Gulf of Mexico and Mediterranean Sea....
2013-07-12 (iso8601)
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There is growing evidence that climate and anthropogenic influences on marine ecosystems are largely manifested by changes in species spatial dynamics. However, less is known about how shifts in species distributions might alter predator-prey...
2013-06-18 (iso8601)
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Jellyfish
benefit
from
many
of
the
changes
mankind
is
making
to
the
ocean.
Climate
change,
overfishing,
nutrient
runoff,
the
introduction
of
invasive
species,
and
coastal
development
all
promote
these
ancient,
gelatinous
creatures.
Because
of...
2011-09 (iso8601)
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The Mount Polley copper-gold deposit is one of a series of porphyry copper deposits that occur in a belt of accreted Mesozoic age island arc terranes in the Canadian Cordillera. The deposit comprises three breccia-hosted Cu-Au ore zones that are...
2013-07-11 (iso8601)
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Short-tailed albatrosses (Phoebastria albatrus, hereafter "STAL") migrate throughout the North Pacific, overlapping with multiple large scale fisheries. In the Bering Sea, documented bycatch of this species is a focal conservation concern, due to...
2013-07-31 (iso8601)
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The seafood industry in Alaska produces about 4.4 billion pounds of fish every year
and approximately 2.2 billion pounds of fish waste. Product recovery rates in the
seafood industry have increased in the last decade, but still a large portion of...
2010-12-10 (iso8601)
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The diurnal cycles in cloud-top height H[subscript top] and cloud fraction (CF) in the southeastern Pacific stratocumulus region were determined for October-November 2008 by analyzing data from Geostationary Operational Environmental Satellite-10...
2013-08 (iso8601)
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