Index Catalog // ScholarsArchive@OSU

Long term albacore (Thunnus alalunga) spatio-temporal association with environmental variability in the Northeastern Pacific

Creator:: Phillips, A. Jason
Abstract:: This study investigated long-term (1961-2008) changes in albacore (Thunnus alalunga) abundance and distribution in relation to local environmental and large-scale climate indices in the Northeastern Pacific using time series and spatial analyses. Prior to the time series analysis, a wavelet analysis was conducted to examine nonrandom patterns of cyclical variability...
Resource Type:: Masters Thesis
Full Text:: OF THE THESIS OF A. Jason Phillips for the degree of Master of Science in Oceanography

Observational Analysis of Extratropical Cyclone Interactions with Northeast Pacific Sea Surface Temperature Anomalies

Creator:: Phillips, Briana K.
Abstract:: In 2013, a large upper-ocean thermal anomaly formed in the Gulf of Alaska (GOA) with sea surface temperatures (SSTs) warmer than 4 degrees Celsius above the climatological norm. This warm anomaly persisted for the next three years and has been linked to downstream effects on North American climate and negative...
Resource Type:: Masters Thesis
Full Text:: -SSTa to be a recurring feature in the future. ©Copyright by Briana Kay Phillips March 18, 2019 All

Warm, Winter Winds: Building a Case Study for the Oregon Coast Range

Creator:: Phillips, Briana
Abstract:: Warm, high pressure systems are measured from a weather station on a high elevation peak in the Oregon Coast range during the winter months. Temperature observations on Mary’s Peak show abnormally warm air in relation to the surrounding areas. The goal of this study was to characterize the frequency and...
Resource Type:: Research Paper and Presentation
Full Text:: PhillipsBrianaK2016 WARM, WINTER WINDS: BUILDING A CASE

A 37,000-year record of paleomagnetic and environmental magnetic variability from Burial Lake, Arctic Alaska

Creator:: Dorfman, Jason Michael
Abstract:: Burial Lake sediments from the Noatak Basin in the northwest Brooks Range of Arctic Alaska (68.43°N, 159.17°W, 21.5 m water depth) provide the oldest continuous lacustrine record of paleo-environmental change and paleomagnetic secular variation (PSV) in eastern Beringia. A precise radiocarbon chronology, determined through accelerator mass spectrometry (AMS) allows us...
Resource Type:: Masters Thesis
Full Text:: , Arctic Alaska by Jason Michael Dorfman A THESIS submitted to Oregon State University in

A sedimentary and geophysical investigation offshore of Sumatra : subduction zone earthquakes, ground motions, and submarine landslides

Creator:: Patton, Jason R.
Abstract:: Subduction zone earthquake and tsunami hazards affect tens of millions worldwide and the recurrence of these disasters can be evaluated with paleoseismic techniques, because earthquake cycles (and their supercycles) typically span many millennia. In these three chapters, I discuss a suite of analyses I use to evaluate the sedimentary record...
Resource Type:: Dissertation

Assessing the effectiveness of the Kosrae Island Resource Management Program (KIRMP) implementation strategy

Creator:: Phillips, Brady Allen
Abstract:: In summer 1992, I interned as a Technical Assistant with the Kosrae Bureau of Planning and Statistics, Kosrae, Federated States of Micronesia (F.S.M). The University of Oregon Micronesia Program sponsored the internship, which proved to be a unique professional and cross-cultural experience. The internship, initiated by Mr. Gerson Jackson, Director...
Resource Type:: Capstone Project
Full Text:: Management Program (KIRMP) Implementation Strategy by Brady Allen Phillips Submitted To Marine Resource

Understanding large resurgent calderas and associated magma systems : the Pastos Grandes Caldera Complex, southwest Bolivia

Creator:: Kaiser, Jason Frederick, 1985-
Abstract:: The Pastos Grandes Caldera Complex (PGCC) in southwest Bolivia has produced two large-volume (≥800 km³ DRE) dacite ignimbrites from a nested caldera source over a period of 5.5 Myr. In addition to the large-volume ignimbrites, a small-volume ignimbrite shield and post-climactic lavas define this composite system. Based on detailed field...
Resource Type:: Dissertation
Full Text:: by Jason Frederick Kaiser A DISSERTATION Submitted to Oregon State University

Incorporation of diet information derived from Bayesian stable isotope mixing models into mass-balanced marine ecosystem models: A case study from the Marennes-Oleron Estuary, France

Creator:: Pacella, Stephen R., Lebreton, Benoit, Richard, Pierre, Phillips, Donald, DeWitt, Theodore H., and Niquil, Nathalie
Abstract:: We investigated the use of output from Bayesian stable isotope mixing models as constraints for a linear inverse food web model of a temperate intertidal seagrass system in the Marennes-Oléron Bay, France. Linear inverse modeling (LIM) is a technique that estimates a complete network of flows in an under-determined system...
Resource Type:: Article
Full Text:: ; Phillips and regg, 2001, 2003; Phillips et al., 2005). A critical assumption of sotope mixing models is

Increasing synchrony of high temperature and low flow in western North American streams: double trouble for coldwater biota?

Creator:: Arismendi, Ivan, Safeeq, Mohammad, Johnson, Sherri L., Dunham, Jason B., and Haggerty, Roy
Abstract:: Flow and temperature are strongly linked environmental factors driving ecosystem processes in streams. Stream temperature maxima (T [subscript max_w]) and stream flow minima (Q[subscript min]) can create periods of stress for aquatic organisms. In mountainous areas, such as western North America, recent shifts toward an earlier spring peak flow and...
Resource Type:: Article
Full Text:: Arismendi • Mohammad Safeeq • Sherri L. Johnson • Jason B. Dunham • Roy Haggerty Received: 2 May 2012

A cooperative effort to track Humboldt squid invasions in Oregon

Creator:: Chesney, Tanya A.
Abstract:: Interannual variability of Humboldt squid (Dosidicus gigas) occurrence in the northern California Current System is largely unknown. In Oregon, the distribution of this versatile predator and what is influencing their range expansion from Mexico is poorly understood due to the recent nature of their "invasion" and a lack of monitoring....
Resource Type:: Masters Thesis
Full Text:: Brodeur, Bob Emmett, Marisa Litz, Jason Phillips, and Jeremy Childress. Thank you to all of people

Influence of total organic carbon deposition on the inventory of gas hydrate in the Indian continental margins

Creator:: Johnson, Joel E., Phillips, Stephen C., Torres, Marta E., Piñero, Elena, Rose, Kelly K., and Giosan, L.
Abstract:: Total organic carbon (TOC) content of marine sediments represents residual carbon, originally derived from terrestrial and marine sources, which has survived seafloor and shallow subseafloor diagenesis. Ultimately, its preservation below the sulfate reduction zone in marine sediments drives methanogenesis. Within the gas hydrate stability zone (GHSZ), methane production along continental...
Resource Type:: Article
Full Text:: . Phillips a, Marta E. Torres b, Elena Pi~nero c, Kelly K. Rose d, Liviu Giosan e a Department of Earth

Effects of Dissolved Oxygen, Temperature, and Dietary Carbon Sources on the Condition of Juvenile English Sole (Parophrys vetulus) from the Oregon Coast

Creator:: Stowell, Michelle A.
Abstract:: Observations of the Oregon coast’s physical oceanography over the last few decades have revealed falling dissolved oxygen levels associated with seasonal upwelling, as well as rising water temperatures. In extreme cases, these changes have been associated with die-offs, redistribution, and decreased abundance and diversity of benthic fish and invertebrates. Many...
Resource Type:: Masters Thesis
Full Text:: . To all of my lab mates – Matthew Wolhowe, Mo Bancroft, Jason Phillips, Caren Barceló, Cathleen

Early retreat of the Alaska Peninsula Glacier Complex and the implications for coastal migrations of First Americans

Creator:: Misarti, Nicole, Finney, Bruce P., Jordan, James W., Maschner, Herbert D. G., Addison, Jason A., Shapley, Mark D., Krumhardt, Andrea, and Beget, James E.
Abstract:: The debate over a coastal migration route for the First Americans revolves around two major points: seafaring technology, and a viable landscape and resource base. Three lake cores from Sanak Island in the western Gulf of Alaska yield the first radiocarbon ages from the continental shelf of the Northeast Pacific...
Resource Type:: Article
Full Text:: Americans Nicole Misarti a,d,*, Bruce P. Finney b,g, James W. Jordan c, Herbert D.G. Maschner d, Jason A

Biophysical feedback mediates effects of invasive grasses on coastal dune shape

Creator:: Zarnetske, Phoebe L., Hacker, Sally D., Seabloom, Eric W., Ruggiero, Peter, Killian, Jason R., Maddux, Timothy B., and Cox, Daniel
Abstract:: Vegetation at the aquatic–terrestrial interface can alter landscape features through its growth and interactions with sediment and fluids. Even similar species may impart different effects due to variation in their interactions and feedbacks with the environment. Consequently, replacement of one engineering species by another can cause significant change in the...
Resource Type:: Article
Full Text:: coastal dune shape PHOEBE L. ZARNETSKE,1,6 SALLY D. HACKER,1 ERIC W. SEABLOOM,2 PETER RUGGIERO,3 JASON R

Hydrodynamic and Morphologic Controls on Extreme Coastal Total Water Levels Across Regional and Local Scales

Creator:: Serafin, Katherine A.
Abstract:: Coastal and estuarine flooding and erosion events are usually driven by the cumulative effect of multiple individual processes like waves, streamflow, storm surge, and/or tides. This dissertation focuses on separating the influence of the regional and local-scale geomorphologic and hydrodynamic processes driving variability in the magnitude and impacts of extreme...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Katherine A. Serafin for

Evaluating Drivers of Iron Cycling in Oregon Continental Margin Sediments Using an Early Diagenetic Model

Creator:: Chan, Adrienne B.
Abstract:: Continental margin sediments have been recognized as a major source of dissolved iron to the global ocean. The focus of this study was to build an early diagenetic model that can be used to simulate iron fluxes from continental margins and thereby identify key controlling factors. The model uses the...
Resource Type:: Masters Thesis
Full Text:: : Jason Phillips, Professor Jeffery R. Cordell, and Kathy Welch Amido. Thank you so much for your time

Timescales and tectonics of oceanic plateaus : long-term evolution of Ontong Java Nui and Rio Grande Rise

Creator:: Davidson, Peter C.
Abstract:: Oceanic plateaus are regions of overthickened oceanic crust and are often thought to form from the interaction of mantle plumes with oceanic lithosphere. These regions can cover vast areas of the ocean basins and represent a highly elevated magmatic flux relative to normal mid-ocean ridge spreading. Oceanic plateaus are considered...
Resource Type:: Dissertation
Full Text:: the Siletz terrane of the western United States and Canada (Phillips et al., 2017) and a portion of

On the Volcanic and Geodynamic Evolution of the Shatsky Rise and the Louisville Seamount

Creator:: Heaton, Daniel E.
Abstract:: Large igneous provinces (LIPs) and intraplate seamounts reflect of anomalous mantle melting and illuminate interior processes of the Earth. These features are in all ocean basins and show the mantle’s evolution over time, then can provide information on plate tectonic processes, such as plate motion over time, spreading ridge formation,...
Resource Type:: Dissertation
Full Text:: Anthony A. P. Koppers Large igneous provinces (LIPs) and intraplate seamounts reflect of anomalous

Diversity, Generalization, and Specialization in Plant-Pollinator Networks of Montane Meadows, Western Cascades, Oregon

Creator:: Helderop, Edward
Abstract:: Despite the importance of plant-pollinator interactions for ecological communities, few long-term observational studies have been conducted of plant-pollinator networks. Using four years of plant-pollinator interaction data from 18 meadows in the Willamette National Forest, Oregon, this thesis examined how meadow size, the amount of nearby meadow habitat, weather, degree days,...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ______________________________________________________ Julia A. Jones Despite the

Childhood cancer and spatial analyses of benzene exposure in Texas

Creator:: Roberts, Mark T.
Abstract:: Childhood cancers are rare diseases that affect 188 children in Texas for every million born. Leukemia is the most common childhood cancer and accounts for roughly one third of childhood cancer cases. However, it is estimated that only 10% of childhood cancer cases can be explained by known risk factors....
Resource Type:: Dissertation
Full Text:: : Childhood Cancer and Spatial Analyses of Benzene Exposure in Texas. Abstract approved: Julia A

The effect of river discharge and wind forcing on the Oregon coastal ocean during fall and winter

Creator:: Mazzini, Piero Luigi Fernandes
Abstract:: Freshwater provided from river discharge influences the dynamics and circulation of most continental shelves around the world. It has profound effects on the transport and fate of materials and substances originated from rivers and estuaries, as well as on the ocean biogeochemistry and marine ecosystems. The effect of buoyancy forcing...
Resource Type:: Dissertation
Full Text:: Abstract approved: John A. Barth Freshwater provided from river discharge influences the dynamics and

The Influence of Model Resolution on Dispersal and Retention in Oregon Coastal Waters

Creator:: Wong-Ala, Jennifer A. T. K.
Abstract:: Lagrangian particle tracking (LPT) models are used to explore how physical processes influence the transport of particles (e.g., eggs, larvae, or propagules) in the ocean. On the Oregon continental shelf and slope, the Northern California Current System (CCS) is influenced by spatially and temporally variable coastal currents driven by weather,...
Resource Type:: Masters Thesis
Full Text:: Giancarlo Helar Moron Correa, Rebecca Howard, Katlyn Haven, Anja Sjostrom, Jason Phillips, Skippy, and

3D vs. conventional volcanic hazard maps : a user study at Mount Hood

Creator:: Preppernau, Charles A.
Abstract:: Volcanic hazard maps inform the public on the nature and extent of the hazards that threaten them, but these maps are often challenging for those who are not trained in map use or geology. The maps in this study focus on lahars, a dangerous, fast, and far-reaching volcanic hazard that...
Resource Type:: Masters Thesis
Full Text:: 3D vs. Conventional Volcanic Hazard Maps: A User Study at

Understanding Signals of the South Pole Ice Core: Chronology, Climate, and Firn Processes

Creator:: Epifanio, Jenna A.
Abstract:: The South Pole ice core (SPC14), drilled in the field seasons of 2014/2015 and 2015/2016, is an intermediate length, 1,751-m ice core which preserves a 54,000-year record of past climate and atmospheric composition. The SPC14 ice core adds to the spatial grid of ice cores in Antarctica extending into the...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Jenna A

An Experimental Investigation of Interstitial Air Movement in Seasonal Snow

Creator:: Drake, Stephen A.
Abstract:: Atmospheric pressure changes do not stop at the permeable snow surface but rather propagate into it. These pressure changes range from high-amplitude, low-frequency events caused by seasonal cycles and synoptic weather systems to small-amplitude, high-frequency events caused by topographic features and turbulence. The effect of pressure changes on interstitial air...
Resource Type:: Dissertation
Full Text:: OF THE DISSERTATION OF Stephen A. Drake for the degree of Doctor of Philosophy in Ocean, Earth

Mobility Push Factors: Modeling the Influences of Natural Disasters on Migration Flows and Adaptation Interventions on Coastal Housing Prices

Creator:: Rose, Stefan A.
Abstract:: Natural disasters are an increasingly costly and frequent occurrence globally and in the United States (IPCC, 2012; IPCC, 2014; Berlemann & Steinhardt, 2017). Discrete disaster events, such as coastal flooding, have been shown to be push factors in temporary and long-term migration (Black et al., 2013). Policy efforts to adapt...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Stefan A. Rose for the

Nuclear Power Plant Siting in the Columbia River Basin: Current Trends, Effects of Climate Change, and Associated Uncertainties

Creator:: Savotkina, Alexandra A.
Abstract:: This PhD dissertation describes and evaluates a geographical analysis of candidate areas for siting nuclear plants utilizing a wet cooling tower in the Columbia River Basin (CRB). It focuses on the analysis of water availability for cooling and how it may be limited by climate change effects on river streamflow....
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Alexandra A. Savotkina for the degree of Doctor of Philosophy in

Ocean Views: Characterizing Risk Perception, Uncertainty, and Decision-making Within the Ocean Condition Forecast System

Creator:: Kuonen, Jessica A.
Abstract:: Ocean users and marine scientists both have connections to the sea. This research explores how the nature of their connection to the sea leads to different perceptions of risk and comfort with uncertainty, and how these differences might be important to consider when one group has information another group needs....
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Jessica A. Kuonen for

The Effects of the Flow Regime on Stream Channel Form and Processes

Creator:: Hempel, Laura A.
Abstract:: Numerous studies have explored how alluvial channel size and morphology are adjusted to different sediment and flow conditions, yet we still know very little about how and to what degree the flow regime controls channel form and processes. We use the term ‘channel form’ to refer to the size and...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Laura A

Stable Isotope Constraints on Carbon Dioxide and Nitrous Oxide Variations at the Onset of the Last Glacial Period: New Ice Cores from Taylor Glacier, Antarctica

Creator:: Menking, James A.
Abstract:: New ice cores retrieved from the Taylor Glacier (Antarctica) blue ice area contain ice and air spanning the Marine Isotope Stage (MIS) 5/4 transition, a period of global cooling and ice sheet expansion. Chronologies were determined for the ice and air bubbles in the new ice cores by visually matching...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF James A. Menking for the degree of Doctor of Philosophy in

Spatio-Temporal Analysis and Modeling in the Marine Environment : Humpback Whale Genetic Variability and Seabird Distributions in the Northeastern Pacific Ocean

Creator:: Dick, Dorothy Marie
Abstract:: 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 biodiversity. One approach to MPA creation advocates targeting marine megafauna (e.g., marine mammals, seabirds, sharks,...
Resource Type:: Dissertation
Full Text:: georeferenced species occurrence data. This three-part study takes a multidisciplinary approach, combining

New Insights into Mantle Dynamics from Helium Isotopes and Argon Geochronology

Creator:: Konrad, Kevin
Abstract:: Earth’s mantle extends to nearly 3000 km depth, comprises >80 % of Earth’s total volume, and has the largest influence on the primordial and radiogenic heat budget. Despite its importance, the structure and composition of the mantle is still debated. There are three primary models for Earth’s mantle structure that...
Resource Type:: Dissertation
Full Text:: melting of a chemically heterogeneous upper mantle. The origin and evolution of intraplate volcanism are

Distribution, Abundance, and Settlement of Slope-spawning Flatfish during Early Life Stages in the Eastern Bering Sea

Creator:: Sohn, Dongwha
Abstract:: Changes in environmental conditions in marine ecosystems could directly or indirectly influence distribution, abundance, settlement, and size at settlement of flatfish. Understanding species-specific and age-specific responses to environmental variability is important for managing commercially important flatfish stocks. Slope-spawning flatfish whose offspring rely on extensive drift from the slope (spawning) to...
Resource Type:: Dissertation
Full Text:: . Additionally, I thank Angela Johnson, Sandi Neidetcher, Bobby Ireland, Jason Phillips, Caren Barceló, Morgan

Advancements in the Monitoring of Forests and Quantification of Live Aboveground Biomass Using Moderate Resolution Spaceborne Multispectral Imagery and Synthetic Aperture Radar Data

Creator:: Kilbride, John B.
Abstract:: The objective of this dissertation is to enhance the monitoring of forest ecosystems through the utilization of remotely sensed data to address the exigencies posed by the Anthropocene. On a global scale, rising temperatures and fluctuating precipitation patterns have strained forests and produced shifts in natural disturbance regimes. Additionally, the...
Resource Type:: Dissertation
Full Text:: utilization of remotely sensed data to address the exigencies posed by the An- thropocene. On a global scale

The effects of thermodynamic parameterizations, ice shelf geometry, and tides on modeled basal melting of Weddell Sea ice shelves

Creator:: Mueller, Rachael D.
Abstract:: Antarctic Ice Sheet mass balance and, hence, sea level change is affected by the floating extensions of outlet glaciers and ice streams that take up about 44% of the coastline (Drewry et al., 1982) and are referred to as "ice shelves". Ice sheet mass loss accelerates when these ice shelves...
Resource Type:: Dissertation
Full Text:: basal melt rates that differ by nearly a factor of two. The difference in these two cases is due to

Particulate organic matter export by two contrasting small mountainous rivers from the Pacific Northwest, U.S.A.

Creator:: Goñi, Miguel A., Hatten, Jeff A., Wheatcroft, Robert A., and Borgeld, Jeffry C.
Abstract:: We investigated the export of particulate organic matter (POM) to the ocean by two contrasting small, mountainous rivers, the Umpqua and Eel Rivers, by collecting suspended sediment samples over a range of discharges and analyzing them for a variety of constituents, including organic carbon, nitrogen, biomarkers with distinct biochemical sources,...
Resource Type:: Article
Full Text:: contrasting small mountainous rivers from the Pacific Northwest, U.S.A. Miguel A. Goñi,1 Jeff A. Hatten,1,3

Deeply dredged submarine HIMU glasses from the Tuvalu Islands, Polynesia: Implications for volatile budgets of recycled oceanic crust

Creator:: Jackson, M. G., Koga, K. T., Price, A., Koppers, A. A. P., Finlayson, V. A., Konrad, K., Hauri, E. H., Kylander-Clark, A., Kelley, K. A., and Kendrick, M. A.
Abstract:: Ocean island basalts (OIB) with extremely radiogenic Pb-isotopic signatures are melts of a mantle component called HIMU (high µ, high ²³⁸U/²⁰⁴Pb). Until now, deeply dredged submarine HIMU glasses have not been available, which has inhibited complete geochemical (in particular, volatile element) characterization of the HIMU mantle. We report major, trace...
Resource Type:: Article
Full Text:: crust Jackson, M. G., Koga, K. T., Price, A., Konter, J. G., Koppers, A. A. P., Finlayson, V. A

Late Pleistocene Slip Rate along the Panamint Valley Fault System, Eastern California

Creator:: Choi, Na Hyung
Abstract:: The Eastern California Shear Zone (ECSZ) is a broad zone of dextral shear inboard of the North American - Pacific plate boundary. Despite decades of study, the significance of a mismatch between geodetic velocities and geologic fault slip rates across the ECSZ remains incompletely understood. Geodetically determined interseismic strain across...
Resource Type:: Masters Thesis
Full Text:: Eric Kirby The Eastern California Shear Zone (ECSZ) is a broad zone of dextral shear inboard

It Depends: Defining Cooperation and Evaluating Effectiveness in Transboundary Waters

Creator:: McCracken, Melissa J.
Abstract:: With the increasing international focus on transboundary cooperation as a part of the Sustainable Development Goal (SDG) Framework, there is global recognition of transboundary water cooperation as a tool for improved governance and management of transboundary surface and groundwaters. Yet, there is not an agreed upon definition of transboundary water...
Resource Type:: Dissertation
Full Text:: the increasing international focus on transboundary cooperation as a part of the Sustainable

Impacts of Policy and Environmental Change: Understanding Factors of Vulnerability and Resilience in the Face of Change in Oregon Fishing Communities

Creator:: Strawn, Astrea
Abstract:: Commercial fisheries are coupled human-natural systems that cross state borders and integrate private, public, academic sectors and interests. These systems integrate complicated relationships between coastal socioeconomics, resource management and environmental realms. Previous findings from West Coast-based studies have identified aging trends in commercial fisheries participation, commonly referred to as the...
Resource Type:: Masters Thesis
Full Text:: differences and graying remains a gap in fisheries-related social science research. This study approached

Application of Cosmogenic Nuclides and Argon Geochronology to Paleoclimate, Paleomagnetism, and Paleohydrology

Creator:: Balbas, Andrea M.
Abstract:: This dissertation uses argon geochronology and cosmogenic nuclide surface exposure dating methods to address three research questions. The first question concerns a geomagnetic instability recorded in lava flows on the island of Floreana in the Galapagos Archipelago. Changes in the Earth’s magnetic field (intensity and orientation) occur frequently throughout geologic...
Resource Type:: Dissertation
Full Text:: dating methods to address three research questions. The first question concerns a geomagnetic

A Bayesian approach to marine spatial planning

Creator:: Erhardt, Morgan William
Abstract:: The marine ecosystem provides a broad spectrum of services for a wide array of user groups. Such broad use of marine resources often results in use conflicts between ecosystem elements and human interests. To help mitigate these conflicts, the Bayesian Analysis for Spatial Siting (BASS) tool was developed to incorporate...
Resource Type:: Masters Thesis
Full Text:: presented on July 29, 2013. Title: A Bayesian Approach to Marine Spatial Planning Abstract approved

Developing a Drought Metric with Water Managers

Creator:: Moruzzi, Danielle L.
Abstract:: Though numerous drought metrics have been developed by the research community, adoption of these metrics by water managers has been limited. The reasons for this vary, but some include mismatches in time scales and spatial scales between the metric supplied and the operational decisions (e.g. water managers often work within...
Resource Type:: Masters Thesis
Full Text:: presented on January 3, 2019. Title: Developing a Drought Metric with Water Managers

Evaluating a Zonal-mean Hydrologic Model Against a Water Tag-enabled Global Simulation

Creator:: Mandovi, Andrew
Abstract:: The hydrologic cycle on Earth comprises the transitions among the solid, liquid, and gaseous phases of water. Understanding the hydrologic cycle is of course important for climate science, but also for agricultural, drinking water, and disaster preparedness purposes. Improvements in satellite observations and general circulation models (GCMs) have led to...
Resource Type:: Masters Thesis
Full Text:: 2023. Title: Evaluating a Zonal-mean Hydrologic Model Against a Water Tag-enabled Global Simulation

Tidally Driven Processes Leading to Near-Field Turbulence in a Channel at the Crest of the Mendocino Escarpment

Creator:: Musgrave, R. C., MacKinnon, J. A., Pinkel, R., Waterhouse, A. F., and Nash, J.
Abstract:: In situ observations of tidally driven turbulence were obtained in a small channel that transects the crest of the Mendocino Ridge, a site of mixed (diurnal and semidiurnal) tides. Diurnal tides are subinertial at this latitude, and once per day a trapped tide leads to large flows through the channel...
Resource Type:: Article
Full Text:: -Field Turbulence in a Channel at the Crest of the Mendocino Escarpment* R. C. MUSGRAVE,1 J. A

The Deschutes Formation: evidence of extension-enhanced explosivity in the early High Cascades

Creator:: Pitcher, Bradley W.
Abstract:: The eruptive history of the Quaternary Cascades arc has been relatively well characterized. However, much less is known about the frequency and sizes of explosive eruptions produced by earlier stages of the arc. The Late Neogene Deschutes Formation of Central Oregon preserves a remarkable record of heightened pyroclastic activity during...
Resource Type:: Dissertation
Full Text:: arc. The Late Neogene Deschutes Formation of Central Oregon preserves a remarkable record of

Interactions amongst Local and Global Drivers of Coastal Acidification in Estuarine Habitats of the Northern California Current

Creator:: Pacella, Stephen R.
Abstract:: The variability of coastal carbonate chemistry continues to provide significant hurdles for understanding interactions between anthropogenic and natural CO2 cycling and resultant effects on coastal acidification dynamics. Attribution of the anthropogenic component is vital for identifying the impacts of increasing atmospheric carbon on coastal habitats such as coral reefs, upwelling...
Resource Type:: Dissertation
Full Text:: has led some to conclude that the baseline shift in atmospheric CO2 is a relatively unimportant

An Exploratory Study on Family Group Use of a Multi-touch Table Exhibit at a Public Marine Science Center

Creator:: East, Jennifer L.
Abstract:: Museums, aquariums, and technology centers are informal learning environments that facilitate the understanding of scientific phenomena while supporting self-motivated learning. Families are a social group that frequently visits these sites. There are multiple opportunities for adults and children to engage in independent sense-making and collective discussion about their experiences with...
Resource Type:: Masters Thesis
Full Text:: ., Horn, M., Spiegel, A., Christiansen, J., Phillips, B., Diamond, J., Evans, E. M., & Shen, C. (2015

Vertical Coastal Trapped Wave Propagation Produced by a Subsurface Ridge

Creator:: Dhage, Laxmikant
Abstract:: The vertical propagation of Coastal Trapped Waves (CTWs) due to subsurface ridges is explored with the help of linear numerical and analytical models. Results show that submerged ridges projecting from the shoreline can scatter a horizontally propagating single baroclinic mode Kelvin wave into both upward and downward propagating Kelvin wave...
Resource Type:: Dissertation
Full Text:: , 2019. Title: Vertical Coastal Trapped Wave Propagation Produced by a Subsurface Ridge Abstract

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

Developing a Strategic Conservation Project for the Oregon Coast Aquarium

Creator:: Prendergast, Lisa D.
Abstract:: This study developed a strategic conservation project for the Oregon Coast Aquarium in Newport, Oregon focusing on a signature species and this aquarium’s conservation focus areas (i.e., marine debris, sustainable fisheries, water quality, climate change). This study also examined the potential for incorporating an ecotourism or wildlife tourism component to...
Resource Type:: Capstone Project
Full Text:: Developing a Strategic

Vertical Structure of the Lower Troposphere in a Changing Arctic

Creator:: Watkins, Daniel M.
Abstract:: The Arctic climate system is changing dramatically as a response to rising atmospheric greenhouse gas concentrations. Key indicators of Arctic change include thinning and retreating of Arctic pack ice, thawing permafrost, greening tundra, and rising surface temperatures. The structure of the atmospheric boundary layer influences and is influenced by processes...
Resource Type:: Dissertation
Full Text:: , 2022. Title: Vertical Structure of the Lower Troposphere in a Changing Arctic Abstract approved

Invisibility: Environmental Migration Governance in a Changing Climate

Creator:: Abel, Kali M.
Abstract:: Climate change has the potential to accelerate many forms of human migration and mobility, yet almost all of the key migration outcomes of interest are determined predominantly by governance, or the norms, laws, and institutions involved in the coordination of human society. These outcomes include the decision whether or not...
Resource Type:: Dissertation
Full Text:: : Invisibility: Environmental Migration Governance in a Changing Climate Abstract approved

Marine Neritic and Epipelagic Community Dynamics: An Investigation of the 'Yin' and 'Yang', No-Analog, and Refugia from a Multi-species Perspective

Creator:: Barceló, Caren
Abstract:: Changes in ocean conditions influenced by climatic fluctuations have lead to changes in individual species distributions, which alter the diversity, communities and species interactions across marine ecosystems worldwide. Assessing the species composition and identifying regions and habitats that can safeguard the persistence of biota are critically important. In this dissertation,...
Resource Type:: Dissertation
Full Text:: , Dongwha Sohn, and Jason Phillips. I would like to thank my family (Steven and Adrián) for being who they

Impact of tide-topography interactions on basal melting of Larsen C Ice Shelf, Antarctica

Creator:: Mueller, R. D., Padman, L., Dinniman, M. S., Erofeeva, S. Y., Fricker, H. A., and King, M. A.
Abstract:: Basal melting of ice shelves around Antarctica contributes to formation of Antarctic Bottom Water and can affect global sea level by altering the offshore flow of grounded ice streams and glaciers. Tides influence ice shelf basal melt rate (w(b)) by contributing to ocean mixing and mean circulation as well as...
Resource Type:: Article
Full Text:: Shelf, Antarctica R. D. Mueller,1,2 L. Padman,2 M. S. Dinniman,3 S. Y. Erofeeva,1 H. A. Fricker,4 and

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
Full Text:: variability and its links to physical forcing in the Pacific Ocean. The CHL fields are a metric of

Deep-sea sediment paleomagnetism : a case study from the North Atlantic

Creator:: Strano, Sarah Elianna
Abstract:: Sedimentary records from the North Atlantic, instrumental in the development of modern paleo-geomagnetic concepts, show a highly variable field even during times of constant polarity. Yet, our understanding of how the magnetization is acquired in the sediments is poorly understood. Primary magnetizations preserved in deep-sea sediments are known to be...
Resource Type:: Dissertation
Full Text:: Atmospheric Sciences presented on April 4, 2014. Title: Deep-sea Sediment Paleomagnetism: A Case Study

A field comparison of multiple techniques to quantify groundwater–surface-water interactions

Creator:: González-Pinzón, Ricardo, Ward, Adam S., Hatch, Christine E., Wlostowski, Adam N., Singha, Kamini, Gooseff, Michael N., Haggerty, Roy, Harvey, Judson W., Cirpka, Olaf A., and Brock, James T.
Abstract:: Groundwater–surface-water (GW-SW) interactions in streams are difficult to quantify because of heterogeneity in hydraulic and reactive processes across a range of spatial and temporal scales. The challenge of quantifying these interactions has led to the development of several techniques, from centimeter-scale probes to whole-system tracers, including chemical, thermal, and electrical...
Resource Type:: Article
Full Text:: A field comparison of multiple techniques to quantify

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
Full Text:: Oregon coast S. M. McKibben,1 P. G. Strutton,2 D. G. Foley,3 T. D. Peterson,4 and A. E. White1 Received

A New Record of Planktic Foraminifera Community Response to Marine Heatwaves in the Northeast Pacific

Creator:: M. Kelsey Lane
Abstract:: Marine heat waves are forecasted to increase in frequency and intensity under future climate scenarios, but little is known about the impact of these events on the one of the most commonly used proxies of ocean temperature - foraminiferal assemblages. This research explores the planktic foraminifera community along the Newport...
Resource Type:: Masters Thesis
Full Text:: on September 8, 2020. Title: A New Record of Planktic Foraminifera Community Response to Marine

The effects of clouds on transient baroclinic eddies in a Mars General Circulation Model

Creator:: Rucker, Michael S.
Abstract:: The low-level baroclinic eddy activity seen in the NASA Ames Mars General Circulation Model (MGCM) for simulations under three annual dust cycles are characterized. Simulations were conducted with both radiatively active and radiatively inert clouds (RAC and non-RAC, respectively) for 11 continuous annual cycles for each dust case. Model results...
Resource Type:: Masters Thesis
Full Text:: The Effects of Clouds on Transient Baroclinic Eddies in a

Understanding Patterns of Timber Harvest and their Drivers : A Quantitative Assessment of Forest Governance in the Western Cascades of Oregon

Creator:: Harris, Tyler C.
Abstract:: Effective forest governance is central to the efficient, sustainable, and equitable use of forest resources, yet challenges in assessing forest governance impede efforts to improve it. Contemporary forest governance involves decisions by multiple stakeholders across multiple sectors of economy and society, from local to global scales – making forest governance...
Resource Type:: Masters Thesis
Full Text:: : Understanding Patterns of Timber Harvest and their Drivers: A Quantitative Assessment of Forest Governance in

Coastal hazards and community exposure in a changing climate : the development of probabilistic coastal change hazard zones

Creator:: Baron, Heather M.
Abstract:: Documented trends in rising sea levels, storminess, and extreme wave heights have the potential to increase the frequency and magnitude of coastal change hazards, increasing risks to coastal infrastructure and environmental resources. Coastal planners and decision makers need information about the impacts of future hazards in order to apply mitigation...
Resource Type:: Masters Thesis
Full Text:: . Title: Coastal Hazards and Community Exposure in a Changing Climate: The Development of Probabilistic

The manganese and iron shuttle in a modern euxinic basin and implications for molybdenum cycling at euxinic ocean margins

Creator:: Scholz, Florian, McManus, James, and Sommer, Stefan
Abstract:: A meaningful application of Mo as a paleo-redox proxy requires an understanding of Mo cycling in modern reducing environments. Stagnant euxinic basins such as the Black Sea are generally regarded as model systems for understanding euxinic systems during early Earth history. However, drawing direct parallels between the Black Sea and...
Resource Type:: Article
Full Text:: The manganese and iron shuttle in a modern euxinic basin

Indicators for Monitoring Biological Integrity of Inland, Freshwater Wetlands : A Survey of North American Technical Literature (1990-2000)

Creator:: Adamus, Paul R.
Abstract:: Potentially relevant literature for the years 1990-1999 was identified by (a) conducting keyword searches of computerized bibliographic databases, especially CAB Abstracts and Aquatic Sciences and Fisheries Abstracts, (b) reading through the tables of contents of a few especially relevant journals, (c) searching the internet for pertinent bibliographies, and (d) to...
Resource Type:: Technical Report
Full Text:: , Freshwater Wetlands A Survey of North American Technical Literature (1990-2000) Indicators for Monitoring

Ensemble-variational data assimilation for dynamically challenging coastal ocean circulation

Creator:: Pasmans, Ivo
Abstract:: Currently, forecasts produced by the Oregon-Washington (OR-WA) Coastal Ocean Forecast System are constrained by assimilation of only surface observations. The 4-dimensional variational (4DVAR) data assimilation (DA) algorithm is utilized to combine the model and the data, with the time-independent forecast ("background'') error covariance B. In this study, two possible improvements...
Resource Type:: Dissertation
Full Text:: system, using a static B with a horizontally uniform covariance, can fully detect and correct the

Water Wits : The Development and Evaluation of a New Model for Integrated Marine Science, Safety, and Stewardship Education

Creator:: Roberts, Sara Shaw
Abstract:: There are many different organizations and agencies which share responsibility for educating the public about responsible use of aquatic and marine resources. However, organizations specifically focused on particular dimensions of water use, such as Oregon State Marine Board (OSMB), often face challenges when attempting to recruit teachers to implement educational...
Resource Type:: Masters Thesis
Full Text:: absolute (Phillips, 1995). Nevertheless, it remains a popular approach for education theory and is

Effects of forest roads and tree removal in or near wetlands of the Pacific Northwest : a literature synthesis

Creator:: Adamus, Paul R.
Abstract:: Because studies of forestry effects on wetlands have been so infrequent in the Pacific Northwest, each section in this report drew heavily from studies of forestry impacts to streams and riparian zones. After assembly and synthesis, that information was extrapolated, mostly in the form of hypotheses, to the very different...
Resource Type:: Technical Report
Full Text:: Wetlands of the Pacific Northwest: A Literature Synthesis December 2014

Early to Late Holocene Surface Exposure Ages From Two Marine-Terminating Outlet Glaciers in Northwest Greenland

Creator:: Reusche, Melissa M., Marcott, Shaun A., Ceperley, Elizabeth G., Barth, Aaron M., Brook, Edward J., Mix, Alan C., and Caffee, Marc W.
Abstract:: Terrestrial chronologies from southern Greenland provide a detailed deglacial history of the Greenland Ice Sheet (GIS). The northern GIS margin history, however, is less established. Here we present surface exposure ages from moraines associated with two large outlet glaciers, Petermann and Humboldt, in the northwestern sector of the GIS. These...
Resource Type:: Article
Full Text:: northwest Greenland Authors Melissa M. Reusche1*, Shaun A. Marcott1*, Elizabeth G. Ceperley1, Aaron M

Precipitation and winter temperature predict long-term range-scale abundance changes in Western North American birds

Creator:: Illán, Javier Gutiérrez, Thomas, Chris D., Jones, Julia A., Wong, Weng-Keen, Shirley, Susan M., and Betts, Matthew G.
Abstract:: Predicting biodiversity responses to climate change remains a difficult challenge, especially in climatically complex regions where precipitation is a limiting factor. Though statistical climatic envelope models are frequently used to project future scenarios for species distributions under climate change, these models are rarely tested using empirical data. We used long-term...
Resource Type:: Article
Full Text:: ., Thomas, C. D., Jones, J. A., Wong, W.-K., Shirley, S. M., & Betts, M. G. (2014). Precipitation and

Fishing for Hypoxia: Exploring Coastal Oxygen Dynamics and Predictability of Low Oxygen Episodes through a Partnership with the Oregon Dungeness Crab Fishing Fleet

Creator:: Stoltz, Linus O.
Abstract:: Coastal hypoxia, or low oxygen episodes pose a threat to marine resources in the Pacific Northwest. Previous research into nearshore oxygen dynamics have linked coastal upwelling to this seasonally occurring phenomenon, however the manifestation of hypoxic waters over coastal fishing grounds was not well understood. Through a partnership with Dungeness...
Resource Type:: Masters Thesis
Full Text:: Episodes through a Partnership with the Oregon Dungeness Crab Fishing Fleet Abstract approved

Toward biologically meaningful net carbon exchange estimates for tall, dense canopies: Multi-level eddy covariance observations and canopy coupling regimes in a mature Douglas-fir forest in Oregon

Creator:: Thomas, Christoph K., Martin, Jonathan G., Law, Beverly E., and Davis, Kent
Abstract:: 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 period. We used eddy covariance (EC) observations at two levels and concurrent biological measurements...
Resource Type:: Article
Full Text:: coupling regimes in a mature Douglas-fir forest in Oregon Christoph K. Thomasa,b,∗, Jonathan G. Martinb

Best Available Science for Wetlands of Island County, Washington : Review of Published Literature : A Report Prepared in Response to Critical Areas Ordinance Updating Requirements for Wetlands

Creator:: Adamus, Paul R.
Abstract:: This document is primarily a review of Best Available Science applicable to Island County wetlands, as needed for categorizing wetlands for regulatory actions and determining widths for buffers (setbacks) that protect the functions of wetlands. The number of technical papers and reports published on these topics is enormous, and none...
Resource Type:: Technical Report
Full Text:: , Washington: Review of Published Literature A Report Prepared in Response to Critical Areas Ordinance

Anomalous porosity preservation and preferential accumulation of gas hydrate in the Andaman accretionary wedge, NGHP-01 site 17A

Creator:: Rose, Kelly K., Johnson, Joel E., Torres, Marta E., Hong, Wei-Li, Giosan, Liviu, Solomon, Evan A., Kastner, Miriam, Cawthern, Thomas, Long, Philip E., and Schaef, H. Todd
Abstract:: In addition to well established properties that control the presence or absence of the hydrate stability zone, such as pressure, temperature, and salinity, additional parameters appear to influence the concentration of gas hydrate in host sediments. The stratigraphic record at Site 17A in the Andaman Sea, eastern Indian Ocean, illustrates...
Resource Type:: Article
Full Text:: -01 site 17A Rose, K. K., Johnson, J. E., Torres, M. E., Hong, W. L., Giosan, L., Solomon, E. A

Is dam development a mechanism for human security? Scale and perception of the Grand Ethiopian Renaissance Dam on the Blue Nile River in Ethiopia and the Xayaburi Dam on the Mekong River in Laos

Creator:: Veilleux, Jennifer Corinne
Abstract:: Human security is a framework related to the stability and sustainability of political, environmental, economical, and socio-cultural areas of concern. Water resources around the world are under increased pressure from increased development, growing populations, pollution, and global climate change. Large-scale dam development while still popular for political and economic development...
Resource Type:: Dissertation
Full Text:: Is Dam Development a Mechanism for Human Security? Scale

Sixth Oregon climate assessment

Creator:: Fleishman, Erica and Oregon Climate Change Research Institute
Abstract:: Consistent with its charge under Oregon House Bill 3543, the Oregon Climate Change Research Institute (OCCRI) conducts a biennial assessment of the state of climate change science, including biological, physical, and social science, as it relates to Oregon and the likely effects of climate change on Oregon. This sixth Oregon...
Resource Type:: Technical Report
Full Text:: rights to their images. All other elements of the document are published under a Creative Commons

Climate change in the Northwest : implications for our landscapes, waters, and communities

Creator:: Dalton, Meghan M., Mote, Philip W., Snover, Amy K., and Oregon Climate Change Research Institute
Abstract:: Climate Change in the Northwest: Implications for Our Landscapes, Waters, and Communities is a report aimed at assessing the state of knowledge about key climate impacts and consequences to various sectors and communities in the Northwest United States. This report draws on two recent state climate assessments in Washington in...
Resource Type:: Technical Report
Full Text:: written permission of the publisher. ISLAND PRESS is a trademark of the Center for Resource Economics

Deciphering Quaternary Geomagnetic, Glacial, and Depositional Histories Using Paleomagnetism in Tandem with Other Chronostratigraphic and Sedimentological Approaches

Creator:: Reilly, Brendan T.
Abstract:: Stratigraphy and chronology are essential to sedimentological study of Earth system histories. And, stratigraphy and chronology are often challenging and interesting problems themselves. The Quaternary (2.588 Ma - present) experienced paleoenvironmental and paleo-geomagnetic variability well outside the range of the recent instrumental record, providing the opportunity to place recent observations...
Resource Type:: Dissertation
Full Text:: recent instrumental record, providing the opportunity to place recent observations in a more complete

Evaluating the effectiveness of illuminated and shadowed contour lines

Creator:: Eynard, James D.
Abstract:: Illuminated contour lines, where line width and color are varied based on an angle of illumination, date back to the mid-nineteenth century, but their effectiveness compared to conventional contour lines has not been fully examined. Currently, illuminated contour lines are not widely used in computer-based cartography because they are not...
Resource Type:: Masters Thesis
Full Text:: lines or other variations of contour maps. Phillips et al. (1975) conducted a between-subjects study

Distributions and fishery associations of immature short-tailed albatrosses (Phoebastria albatrus) in the North Pacific

Creator:: O'Connor, Amelia J.
Abstract:: 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 the fact that this species is listed as "endangered" under the U.S. Endangered Species Act. We conducted...
Resource Type:: Masters Thesis
Full Text:: Crustacean Biology 13:175-183. Torres, L. G., P. M. Sagar, D. R. Thompson, and R. A. Phillips. 2013

Pacific Coast Groundfish Fishery Assessment and Management: Incorporating Nearshore Surveys into the Fishery Management Framework

Creator:: Haven, Katlyn M. M.
Abstract:: The Pacific coast groundfish fishery is a diverse, important and lucrative commercial and recreational fishery. Part of this fishery’s monitoring process includes regular fishery-independent surveys for stock assessment. Although these fishery-independent surveys are cost-effective, they are susceptible to scientific uncertainty, and they do not currently sample in nearshore (water depth...
Resource Type:: Masters Thesis
Full Text:: Center (NWFSC). Thank you to Lorenzo Ciannelli, Waldo Wakefield, Jason Phillips, Toby Auth, Matthew

Investigating the Paleoseismic Potential of Small, Southern Cascadia Lakes

Creator:: Ross, Ann Elizabeth Morey
Abstract:: Marine and coastal sedimentary archives show that the Cascadia Subduction Zone can generate great earthquakes of ~M9, most recently in 1700 CE, yet we still know little of the impacts of these events inland of the Pacific coast. Inland lakes have recently been exploited for their use as paleoseismic records...
Resource Type:: Dissertation
Full Text:: record from Squaw Lakes, Oregon, a pair of landslide dammed lakes at the California/Oregon border

Helium isotope variations in peridotite, gabbro and basalt from the Kane Oceanic Core Complex

Creator:: Konrad, Kevin
Abstract:: The Kane Oceanic Core Complex (OCC) is a valuable window into crustal architecture and chemical composition of the lithosphere beneath a slow-spreading ocean ridge. A suite of > 30 samples (comprised of whole rocks, mineral separates and basalt glasses) has been analyzed for ³He/⁴He isotope ratios and He concentrations. Gas...
Resource Type:: Masters Thesis
Full Text:: (Tivey et al., 2004). Samples were collected via dredging and remote controlled submersible Jason II. A

Seismic wave attenuation of the crust and upper mantle in the Himalaya and South-Central Tibetan Plateau

Creator:: Monigle, Patrick W.
Abstract:: Recent geophysical and geological investigations of the Tibetan plateau have given rise to conflicting models of plateau growth and deformation, where the presence and extent of partial melt in the crust could be a determining factor. Here we investigate the attenuation structure of the crust and upper mantle, as attenuation...
Resource Type:: Dissertation
Full Text:: Rietbrock, 2001; Schurr et al., 2003; Eberhart-Phillips et al., 2005]. A similar range of Q values (50

An experimental investigation of the effects of temperature and dissolved oxygen on the growth of juvenile English sole and juvenile Dungeness crab

Creator:: Bancroft, Morgan P.
Abstract:: In the past two decades, occurrences of summertime upwelling-driven low dissolved oxygen (DO) events, or hypoxia, have increased along the northeast Pacific coast. If hypoxic events are severe enough to cause marine species mortality, the areas affected are often called "dead zones." In 2002 and again in 2006, the events...
Resource Type:: Masters Thesis
Full Text:: , Jason Phillips, Elakha Captain Mike Kriz and Kody Robinson thank you all for allowing me to be a part

Paleoseismic Record of Peninsula Segment Earthquakes on the San Andreas Fault near San Francisco, CA and possible NSAF linkage to Cascadia

Creator:: Goldfinger, Chris
Abstract:: Lake Merced results have established the lake as a viable paleoseismic site on the northern San Francisco peninsula. The lake records ~ 2300 years of event beds, 17 in total. Prior to that the lake was open to the ocean and contains marine shells consistent with an estuarine environment. The...
Resource Type:: Technical Report
Full Text:: 2 ABSTRACT Lake Merced results have established the lake as a viable paleoseismic site on

Cooperative product development between researchers and commercial fishermen to find applications for ocean condition forecasting technology

Creator:: Duncan, Colin
Abstract:: This is a case study of the cooperative development of an ocean condition forecasting tool by Oregon commercial fishermen, Oregon State University (OSU) scientists, and OSU student software engineers. Ocean condition forecasting models developed by OSU scientists were used to create an online tool to assist decision-making for fishermen. This...
Resource Type:: Masters Thesis
Full Text:: Phillips to transform my findings into a tool that people could actually use. Without your technical

Effects of Stage 0 treatment on spring Chinook juveniles within South Fork McKenzie River in Oregon

Creator:: Hahn, Aleah
Abstract:: Low-tech habitat restoration techniques, including Stage 0 treatments, are increasingly applied but often lack robust evaluation of their effects. In 2018, one kilometer of the South Fork McKenzie (SFMK) River, OR was modified to the Stage 0 condition for the benefit of ESA-listed Chinook by raising the incised channel to...
Resource Type:: Masters Thesis
Full Text:: significantly increase the size of juveniles, but not the number. Additionally, the treated reach produced a

Measuring sediment transport rates using tracer gravel and RFID technology

Creator:: Lewis, Logan L.
Abstract:: Rates of sediment transport were determined using tracer gravel and a RFID antenna array at Oak Creek (Oregon) to compare a new method with an existing transport relation created from data previously collected in the same study reach. Close to 3,000 tracers were deployed throughout the study reach and were...
Resource Type:: Masters Thesis
Full Text:: Johnson 2015; Phillips, Martin, and Jerolmack, 2013). A continuing problem in the study of sediment

Aquatic pesticide best management practices and relational database for the protection of NOAA trust species

Creator:: Gianou, Kelsey, Lam, Jennifer, Emanuel, Robert, Jepson, Paul, and Chan, Sam
Abstract:: Pesticides are widely used to control undesirable pests and may be applied directly to water or lands directly adjacent to water. There can be unintended consequences, however, to native, threatened, and endangered species. There is little information on the impacts of aquatic pesticides and best management practices (BMPs) to NOAA...
Resource Type:: Capstone Project
Full Text:: husband, Jason Gianou, for his unwavering support, selfless sacrifices, and unconditional love

Distribution of Western Pond Turtle Populations in the Willamette River Basin, Oregon : Project Report to the Western Pond Turtle Working Group

Creator:: Adamus, Paul R.
Abstract:: This is the second of two new reports sponsored by a consortium of public groups and focusing on the Western Pond Turtle (Emys marmorata marmorata). The first report (Adamus 2003) provided an updated perspective on the distribution of the species in the Willamette River Basin, based on new field surveys,...
Resource Type:: Technical Report
Full Text:: historical range and numbers within all or a portion of the Willamette River Basin. Consequently, in this

Illuminating Patterns in Dark Microbial Matter: Diversity and Distribution of Fungi and Actinobacteria in Deep-sea Methane Seep Sediments

Creator:: Ardor Bellucci, Lila
Abstract:: Fungi and Actinobacteria are essential actors in global biogeochemical cycles of carbon and nutrients, and have both been recently appreciated for their roles in marine ecosystems. However, the diversity and distribution of these ubiquitous, but low-abundance microbes in deep-sea habitats remains poorly understood, particularly in chemosynthetic habitats such as methane...
Resource Type:: Masters Thesis
Full Text:: relative abundance of unassigned fungi suggests that seep habitats harbor a huge number of novel taxa

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
Full Text:: . The residence time of a magma is defined as the time between

Investigating Timescales of Resurgence at Large Calderas: Post-74 ka Activity at Toba Caldera, Sumatra, Indonesia

Creator:: Mucek, Adonara E.
Abstract:: The Toba Caldera Complex is the youngest resurgent caldera in the last 100 kyrs, formed from four overlapping eruptions starting 1.2 Myrs ago. The last caldera-forming eruption, the Youngest Toba Tuff eruption, occurred ~74 kyrs ago, emitting 2800 km3 of ash and pumice into the atmosphere and forming the caldera...
Resource Type:: Dissertation
Full Text:: uplifted caldera floor provide a well-preserved and detailed history of the resurgent uplift, while lava

Eocene Origin of Owens Valley, California

Creator:: Sousa, Francis J.
Abstract:: Bedrock (U-Th)/He data reveal an Eocene exhumation difference greater than four kilometers athwart Owens Valley, California near the Alabama Hills. This difference is localized at the eastern fault-bound edge of the valley between the Owens Valley Fault and the Inyo-White Mountains Fault. Time-temperature modeling of published data reveal a major...
Resource Type:: Article
Full Text:: modeling of published data reveal a major phase of tectonic activity from 55 to 50 Ma that was of a

Investigating Plate Boundaries through New High-Resolution Bathymetry and Seismic Data; 2 Case Studies from the Cascadia Subduction Zone and San Andreas Fault

Creator:: Beeson, Jeffrey Watson
Abstract:: Contiential margins on plate boundaries are complex systems with morphologies and characteristics dictated by the interplay of sediment deposition and erosion, tectonic faulting, folding, and strong ground motion generating mass wasting events. With ever increasing advances in high-resolution remote sensing techniques these systems are increasingly becoming illuminated. A ~120 km...
Resource Type:: Dissertation
Full Text:: remote sensing techniques these systems are increas- ingly becoming illuminated. A ~120 km offshore

Controls on Process and Form in Alluvial and Bedrock Meandering Rivers

Creator:: Zunka, John P. P.
Abstract:: Bedrock meandering rivers are sinuous channels that pair steep bedrock outside banks with lower gradient slip-off slopes on the inside of bends. These rivers have the potential to record information on climatic and tectonic “external” forcings in their morphology (e.g., longitudinal profiles, strath terraces, channel and valley dimensions). However, geology...
Resource Type:: Dissertation
Full Text:: meandering through a combination of remote analysis of alluvial and bedrock meander wavelengths and a field

Subducting Seamounts and Heceta Bank: An Amphibious Seismic Tomography Experiment of the Central Oregon Forearc

Creator:: Nolan, Sarah
Abstract:: Studies reveal differences in slip segmentation and plate coupling along the Cascadia subduction zone. The segment between 44.0°N and 45.0°N exhibited reduced slip in the 1700 megathrust earthquake (Wang et al., 2013) and corresponds with previous rupture boundaries inferred from paleoseismic data (Leonard et al., 2010). Notably, this segment of...
Resource Type:: Masters Thesis
Full Text:: a lower slip deficit in multiple locking models (Schmalzle et al., 2014; Lindsey et al., 2021) and

Analysis of Surface Heat Flux Anomalies to Understand Recent Northeast Pacific Marine Heatwave Events

Creator:: Yi-Wei, Chen
Abstract:: Several large-scale marine heatwave events occurred during the last 10 years in the North Pacific. A particular extreme marine heatwave in the North Pacific called the blob created an unprecedented high peak of sea surface temperature (SST) during 2013/14. MHW events had significant impacts on downstream weather and precipitation patterns...
Resource Type:: Masters Thesis
Full Text:: , 2016; Phillips and O’Neill, 2020). This event was manifested as a sea surface temperature (SST

Intra-seasonal sea level variability along the west coast of India

Creator:: Dhage, Laxmikant
Abstract:: The importance of local versus distant forcing is studied for the wind driven intra- seasonal (30-120 day) sea level anomaly (SLA) variations along the west coast of India. Three locations on the continental slope are chosen to represent the west coast. Two more locations, one east of Sri-Lanka and another...
Resource Type:: Masters Thesis
Full Text:: variability on the west coast of India, with a minor contribution from the south- east coast of India. Use of

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