Index Catalog // ScholarsArchive@OSU

Video on the rocks : use of a video lander platform as a survey tool for a high-relief nearshore temperate rocky reef

Creator:: Easton, Ryan Reid
Abstract:: The nearshore waters off the Oregon coast (< 73 meters) are a region of high productivity and economic value, with a variety of habitats that include rock outcrops. Temperate reef habitats are important to many commercially important fishes inhabiting the Pacific coast, including canary rockfish (Sebastes pinniger) and yelloweye rockfish...
Resource Type:: Masters Thesis

Using the ⁸⁷Sr/⁸⁶Sr of modern and paleoseep carbonates from northern Cascadia to link modern fluid flow to the past

Creator:: Joseph, C., Torres, M. E., Martin, R. A., Haley, B. A., Pohlman, J. W., Riedel, M., and Rose, K.
Abstract:: Most authigenic carbonates previously recovered from the Cascadia slope have Sr-⁸⁷/Sr-⁸⁶ signatures that reflect shallow precipitation in equilibrium with coeval seawater. There is also evidence for carbonate formation supported by fluids that have been modified by reactions with the incoming Juan de Fuca plate (Sr-⁸⁷/⁸⁶(Sr) = 0.7071; Teichert et al.,...
Resource Type:: Article

Using Relative Humidity as a State Variable in Climate Feedback Analysis

Creator:: Held, Isaac M. and Shell, Karen M.
Abstract:: An approach to climate change feedback analysis is described in which tropospheric relative humidity replaces specific humidity as the state variable that, along with the temperature structure, surface albedos, and clouds, controls the magnitude of the response of global mean surface temperature to a radiative forcing. Despite being simply a...
Resource Type:: Article

Trace element characteristics of zircon : a means of assessing mineralization potential of intrusions in northern Nevada

Creator:: Farmer, Lucian P.
Abstract:: Oxidized hydrous intermediate composition magmas are responsible for porphyry copper (Cu ±Mo ±Au) deposits and epithermal Au ore deposits formed globally in the shallow crust (Sillitoe, 2010; Seedorff et al., 2005). Recently, zircon geochemistry has been used to characterize both productive and barren intrusions associated with porphyry Cu-Au ore deposits....
Resource Type:: Masters Thesis

Timescales of large silicic magma systems : investigating the magmatic history of ignimbrite eruptions in the Altiplano-Puna Volcanic Complex of the Central Andes through U-Pb zircon dating

Creator:: Kern, Jamie M.
Abstract:: The Altiplano-Puna Volcanic Complex in the Central Andes is one of the youngest large silicic volcanic fields (LSVFs) in the world, erupting over 13,000 km³ of material during multiple supereruptions from 11 to 1 Ma. Understanding the timescales over which magma is stored in the crust prior to eruption is...
Resource Type:: Masters Thesis

The Unpredictable Nature of Internal Tides on Continental Shelves

Creator:: Nash, Jonathan D., Kelly, Samuel M., Shroyer, Emily L., Moum, James N., and Duda, Timothy F.
Abstract:: Packets of nonlinear internal waves (NLIWs) in a small area of the Mid-Atlantic Bight were 10 times more energetic during a local neap tide than during the preceding spring tide. This counterintuitive result cannot be explained if the waves are generated near the shelf break by the local barotropic tide...
Resource Type:: Article

The Spatial distribution of parks and crime in Seattle, Washington

Creator:: Weems, Candice Michelle
Abstract:: Parks help to build social cohesion within a community. Urban open spaces offer a sense of place, act as the focal points for public gatherings, and provide an opportunity for social networking (Francis, 2003; Hayward, 1989). While offering so much they are also known to be places of disgust and...
Resource Type:: Capstone Project

The provenance and trace element signatures of MORB anorthitic plagioclase

Creator:: Burleigh, Andrew W.
Abstract:: In an attempt to understand the phase equilibria and petrogenesis of MORB anorthitic plagioclase, Cr-spinel commonly hosted within anorthitic plagioclase has been investigated petrographically and compositionally. Based on spinel-anorthite relationships from three samples of plagioclase ultra-phyric basalt (PUB; Southeast Indian Ridge, Axial Seamount and West Valley Segment, Juan de Fuca...
Resource Type:: Masters Thesis

The Oregon Nearshore Research Inventory Project : the importance of science and the scientific research community in marine spatial planning

Creator:: Sherman, Kate
Abstract:: The purpose of Oregon's Nearshore Research Inventory (NRI) project was to inventory and map the current and future use of Oregon's nearshore environment by the scientific research community for use in Oregon's marine spatial planning process. Spatial and qualitative data on the use of Oregon's ocean and coast by the...
Resource Type:: Masters Thesis

The Cerro Guacha caldera complex : an upper Miocene-Pliocene polycyclic volcano-tectonic structure in the Altiplano Puna Volcanic Complex of the Central Andes of Bolivia

Creator:: Iriarte, Rodrigo
Abstract:: Four multicyclic complex calderas and smaller ignimbrite shields located within the Altiplano Puna Volcanic Complex of the Central Andes (APVC) erupted 13000 km³ of magma within the last 11 Ma. One of the largest and most complex of these is the Cerro Guacha Caldera. Ar-Ar age determinations and paleomagnetic directions...
Resource Type:: Masters Thesis

Structural and volcanic evolution of the Glass Buttes area, High Lava Plains, Oregon

Creator:: Boschmann, Darrick E.
Abstract:: The Glass Buttes volcanic complex is a cluster of bimodal (basalt-rhyolite), Miocene to Pleistocene age lava flows and domes located in Oregon's High Lava Plains province, a broad region of Cenozoic bimodal volcanism in south-central Oregon. The High Lava Plains is deformed by northwest-striking faults of the Brothers Fault Zone,...
Resource Type:: Masters Thesis

Sensible Heat Flux in Near-Neutral Conditions over the Sea

Creator:: Mahrt, L., Vickers, Dean, Andreas, Edgar L., and Khelif, Djamal
Abstract:: The variation of the sea surface sensible heat flux is investigated using data from the Gulf of Tehuantepec Experiment (GOTEX) and from eight additional aircraft datasets representing a variety of surface conditions. This analysis focuses on near-neutral conditions because these conditions are common over the sea and are normally neglected,...
Resource Type:: Article

Satellite-based detection and monitoring of phytoplankton blooms along the Oregon coast

Creator:: McKibben, S. M., Strutton, P. G., Foley, D. G., Peterson, T. D., and White, A. E.
Abstract:: We have applied a normalized difference algorithm to 8 day composite chlorophyll-a (CHL) and fluorescence line height (FLH) imagery obtained from the Moderate Resolution Imaging Spectroradiometer aboard the Aqua spacecraft in order to detect and monitor phytoplankton blooms in the Oregon coastal region. The resulting bloom products, termed CHL[subscript rel]...
Resource Type:: Article

Satellite views of Pacific chlorophyll variability: comparisons to physical variability, local versus nonlocal influences and links to climate indices

Creator:: Thomas, Andrew C., Strub, P. Ted, Weatherbee, Ryan A., and James, Corinne
Abstract:: Concurrent satellite-measured chlorophyll (CHL), sea surface temperature (SST), sea level anomaly (SLA) and model-derived wind vectors from the 13+ year SeaWiFS period September 1997 – December 2010 quantify time and space patterns of phytoplankton variability and its links to physical forcing in the Pacific Ocean. The CHL fields are a...
Resource Type:: Preprint and Article

Satellite observations of the inﬂuence of mesoscale ocean eddies on near-surface temperature, phytoplankton and surface stress

Creator:: Gaube, Peter
Abstract:: The influence of mesoscale ocean eddies on near-surface ocean temperature, surface stress and phytoplankton communities is investigated by collocating numerous satellite measurements along with vertical profiles of oceanic temperature and salinity to the interiors of eddies identified and tracked in altimetric sea surface height maps. The surface currents associated with...
Resource Type:: Dissertation

Resilience of large river basins : applying social-ecological systems theory, conflict management, and collaboration on the Mekong and Columbia Basins

Creator:: MacQuarrie, Patrick R.
Abstract:: River basins provide essential services for both humans and ecosystems. Understanding the connections between ecosystems and society and their function has been at the heart of resilience studies and has become an increasing important endeavor in research and practice. In this dissertation, I define basin resilience as a river basin...
Resource Type:: Dissertation

Regional scale sandbar variability : observations from the U.S. Pacific Northwest

Creator:: Di Leonardo, Diana R.
Abstract:: Understanding sandbar dynamics and variability is integral to developing a predictive capacity for nearshore flows, sediment transport, morphological change, and ultimately for determining coastline exposure to damaging storm waves. Along the high-energy U.S. Pacific Northwest (PNW) coast, sandbars typically dominate the bathymetry of the active zone. Here we report on...
Resource Type:: Masters Thesis

Quantification of the temperature, pressure and compositional dependence of trace element partitioning : an experimental and theoretical study

Creator:: Cunningham, Jennifer Lynn
Abstract:: The thermodynamic history of the Earth is preserved in the trace element record created through igneous processes. The ability to interpret that record depends on the accuracy and precision of numerical models that connect igneous processes with their geochemical consequences. This project answers three major questions concerning the relationship between...
Resource Type:: Masters Thesis

Proof-of‐Concept : Automated high‐frequency measurements of PCO₂ and TCO₂ and real‐time monitoring of the saturation state of calcium carbonate

Creator:: Vance, Jesse M.
Abstract:: The rapid increase in atmospheric carbon dioxide (CO₂) over the last 250 years has led to the absorption of approximately 550 billion tons of anthropogenic CO₂ by the global ocean. This oceanic uptake of CO₂ has resulted in decreasing pH and alterations to carbonate chemistry, threatening many ecologically and economically...
Resource Type:: Capstone Project

Power Calculations for a Passively Tuned Point Absorber Wave Energy Converter on the Oregon Coast

Creator:: Oskamp, Jeffrey A. and Özkan-Haller, H. Tuba
Abstract:: A wave-structure interaction model is implemented, and power output estimates are made for a simplified wave energy converter operating in measured spectral wave conditions. In order to estimate power output from a wave energy converter, device response to hydrodynamic forces is computed using a boundary element method potential flow model....
Resource Type:: Article

ScholarsArchive@OSU

Video on the rocks : use of a video lander platform as a survey tool for a high-relief nearshore temperate rocky reef

Using the ⁸⁷Sr/⁸⁶Sr of modern and paleoseep carbonates from northern Cascadia to link modern fluid flow to the past

Using Relative Humidity as a State Variable in Climate Feedback Analysis

Trace element characteristics of zircon : a means of assessing mineralization potential of intrusions in northern Nevada

Timescales of large silicic magma systems : investigating the magmatic history of ignimbrite eruptions in the Altiplano-Puna Volcanic Complex of the Central Andes through U-Pb zircon dating

The Unpredictable Nature of Internal Tides on Continental Shelves

The Spatial distribution of parks and crime in Seattle, Washington

The provenance and trace element signatures of MORB anorthitic plagioclase

The Oregon Nearshore Research Inventory Project : the importance of science and the scientific research community in marine spatial planning

The Cerro Guacha caldera complex : an upper Miocene-Pliocene polycyclic volcano-tectonic structure in the Altiplano Puna Volcanic Complex of the Central Andes of Bolivia

Structural and volcanic evolution of the Glass Buttes area, High Lava Plains, Oregon

Sensible Heat Flux in Near-Neutral Conditions over the Sea

Satellite-based detection and monitoring of phytoplankton blooms along the Oregon coast

Satellite views of Pacific chlorophyll variability: comparisons to physical variability, local versus nonlocal influences and links to climate indices

Satellite observations of the inﬂuence of mesoscale ocean eddies on near-surface temperature, phytoplankton and surface stress

Resilience of large river basins : applying social-ecological systems theory, conflict management, and collaboration on the Mekong and Columbia Basins

Regional scale sandbar variability : observations from the U.S. Pacific Northwest

Quantification of the temperature, pressure and compositional dependence of trace element partitioning : an experimental and theoretical study

Proof-of‐Concept : Automated high‐frequency measurements of PCO₂ and TCO₂ and real‐time monitoring of the saturation state of calcium carbonate

Power Calculations for a Passively Tuned Point Absorber Wave Energy Converter on the Oregon Coast

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