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ScholarsArchive at Oregon State University
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Education programs at zoos and aquariums provide opportunities for visitors to learn and garner information on animal natural history and, hopefully, conservation messaging. Fee-based programs (programs with an additional fee on top of admission...
2016-06-08 (iso8601)
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We determined pore fluid rare earth element (REE) concentrations in near-surface sediments retrieved from the continental margin off Oregon and California (USA). These sites represent shelf-to-slope settings, which lie above, within, and below the...
2015-04 (iso8601)
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The ability to reconstruct past ocean currents is essential for determining ocean
circulation’s role in global heat transport and climate change. Our understanding of the
relationship between circulation and climate in the past allows us to...
2015-11 (iso8601)
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Because ocean circulation impacts global heat transport, understanding the relationship between deep ocean circulation and climate is important for predicting the ocean's role in climate change. A common approach to reconstruct ocean circulation...
2016-09-01 (iso8601)
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Prevention of wellbore CO₂ leakage is a critical component of any successful carbon capture, utilization, and storage program. Sporosarcina pasteurii is a bacterium that has demonstrated the potential ability to seal a compromised wellbore through...
2016-06 (iso8601)
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In this study, uncoupled and coupled ocean–atmosphere simulations are carried out for the California Upwelling System to assess the dynamic ocean–atmosphere interactions, namely, the ocean surface current feedback to the atmosphere. The authors...
2016-06 (iso8601)
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The goal of dissertation research was to use geochemical, statistical and
geological methods to constrain and understand climate variability over several
different time scales. Specifically, I have addressed three questions regarding past
climate...
2016-06-02 (iso8601)
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The goals of this dissertation are centered on understanding changes in Earth
surface and climate systems through the use of geologic proxies as records of past
changes in these systems. Specifically, this dissertation (1) establishes a new...
2016-06-14 (iso8601)
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Acidification has sparked discussion about whether regulatory agencies should place coastal waters on the Clean Water Act 303(d) impaired water bodies list. Here we describe scientific challenges in assessing impairment with existing data,...
2016-06 (iso8601)
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The rapid decline of marine ecosystems worldwide and the failure of traditional single
species management pushed for the development of ecosystem-based conservation
measures such as marine protected areas (MPA) to slow the loss of marine...
2016-06-10 (iso8601)
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Findings from nearly two decades of research focused on the Columbia River littoral cell (CRLC), a set of rapidly prograding coastal barriers and strand-plains in the U.S. Pacific Northwest, are synthesized to investigate the morphodynamics...
2016-06-01 (iso8601)
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Several approaches to interpreting the Cascadia paleoseismic record are
used to derive relationships between fault area, slip, and moment and to compare the
results with the scaling relationships determined by Somerville et al. (2015) for recent...
2016-06 (iso8601)
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Numerous investigations demonstrate that mantle convective processes such as upwelling affect the surface topography of the overriding plate. The surface expression of mantle flow has been coined ‘transient topography’. Transient topography in the...
2016-05-31 (iso8601)
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Despite more than two centuries of exploration, including more than six million deep wellbores with depths exceeding 40,000 feet in some parts of the world, our ability to constrain subsurface processes and properties remains limited....
2016-06-10 (iso8601)
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Montane meadows in the Cascade Range of Oregon have been declining due to tree establishment since records began. Montane meadow complexes in the H.J. Andrews Experimental Forest shrank by 60 to 75% from 1949 to 2005, but fine scale temporal and...
2016-06-07 (iso8601)
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Concentrations of H₂O and CO₂ in olivine-hosted melt inclusions can be used to estimate crystallization depths for the olivine host. However, the original dissolved CO₂ concentration of melt inclusions at the time of trapping can be difficult to...
2016-07-15 (iso8601)
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Observations of winds, waves, and turbulence at the ocean surface are compared with several analytic formulations and a numerical model for the input of turbulent kinetic energy by wave breaking and the subsequent dissipation. The observations are...
2016-06 (iso8601)
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The Antarctic contribution to sea level is a balance between ice loss along the margin and accumulation in the interior. Accumulation records for the past few decades are noisy and show inconsistent relationships with temperature. We investigate...
2016-04-28 (iso8601)
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Here we use SKS shear wave splitting observations from ocean-bottom seismometer data to infer patterns of mantle deformation beneath the Juan de Fuca plate and its adjoining boundaries. Our results indicate that the asthenosphere beneath the Juan...
2015-12 (iso8601)
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Headwater streams comprise nearly 90% of the total length of perennial channels in global catchments. They mineralize organic carbon entering from terrestrial systems, evade terrestrial carbon dioxide (CO₂ ), and generate and remove carbon through...
2016-05 (iso8601)
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Climate models indicate the Arctic will undergo dramatic environmental change with forecasted increases in temperature and river runoff. Saffron cod (Eleginus gracilis) is abundant in nearshore waters and appears in the diet of many Arctic sea...
2016-06 (iso8601)
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Zooplankton fecal pellet flux is a highly variable component of the biological carbon pump. While fecal pellets can comprise 0 to nearly 100% of particulate organic carbon collected in sediment traps, mechanisms for this variability remain poorly...
2015-11 (iso8601)
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The Bering Sea is a highly productive ecosystem with abundant prey populations in the summer that support some of the largest seabird colonies in the Northern Hemisphere. In the fall, the Bering Sea is used by large numbers of migrants and...
2016-05-10 (iso8601)
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It is a golden age for animal movement studies and so an opportune time to assess priorities for future work. We assembled 40 experts to identify key questions in this field, focussing on marine megafauna, which include a broad range of birds,...
2016-06 (iso8601)
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Temperature strongly influences the growth of crustaceans and directly controls distribution. Despite being commercially important, there are no data on temperature effects upon growth in newly settled southern Tanner crab Chionoecetes bairdi....
2016-04 (iso8601)
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