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Filtering by: Academic Affiliation College of Earth, Ocean, and Atmospheric Sciences Remove constraint Academic Affiliation: College of Earth, Ocean, and Atmospheric Sciences Decade 2010-2019 Remove constraint Decade: 2010-2019 Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.)

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The Geology, Geochronology, and Geochemistry of the Miocene Volcanic Rocks at the Inmaculada Ag-Au Mine, Southern Peru

Creator:

Cuellar Quispe, Juan Carlos

Abstract:

The Inmaculada Mine is located in the Miocene belt of epithermal deposits that extends from southern Peru to northern Chile and Bolivia. This belt is known for its silver-rich epithermal veins that have been worked since colonial times. The Inmaculada Mine belongs to a mining district that includes, from north...

Resource Type:

Masters Thesis
An Ecological Assessment of a Potential Sea Otter (Enhydra lutris) Reintroduction to the Oregon Coast

Creator:

Kone, Dominique

Abstract:

Sea otters (Enhydra lutris) used to exist along coastlines throughout much of the North Pacific Ocean. During the Maritime Fur Trade, sea otters were extirpated from much of their historic range, including Oregon. There is renewed interest in reintroducing sea otters to Oregon. Managers seek improved understanding of the potential...

Resource Type:

Masters Thesis
Exploring the Magnetic Properties of Specific Grain-Sizes to Understand Marine Depositional Systems: A Case Study from the Eirik Ridge South of Greenland over the Last Glacial Cycle

Creator:

Freiberg, Benjamin T.

Abstract:

Disentangling sediment source from sediment transport is a fundamental marine geologic challenge critical to the interpretation of any sedimentary record. The Eirik Ridge, a sediment drift south of Greenland, receives terrigenous sediment primarily from subglacial erosion of south Greenland’s Precambrian bedrock and Paleogene volcanics that outcrop in east Greenland and...

Resource Type:

Masters Thesis
Pillaging Bloodwood: An Exploratory Examination of Illegal Deforestation in Guinea-Bissau Through Forest Disturbance Algorithms and Unsupervised Clustering Techniques

Creator:

Walters, Alexander E.

Abstract:

Environmental crime around the world, such as trafficking in illegal timber, is directly related to political instability. Traffickers exploit weak, fragile, and chaotic political circumstances to illegally extract high-value commodities, challenging the extent to which conservation goals are achievable in resource rich developing countries. Rosewood is the largest traded endangered...

Resource Type:

Masters Thesis
Late Holocene Earthquake History Recorded in Alluvial Fan Sequences, Panamint Valley, Eastern California

Creator:

Sethanant, Israporn

Abstract:

The Panamint Valley fault zone (PVFZ) is an active, dextral-oblique normal fault that partially accommodates dextral shear across the Eastern California Shear Zone (ECSZ). The fault system has a complex geometry, characterized by a relatively high-angle dextral oblique normal fault in the south and a low-angle detachment system that accommodates...

Resource Type:

Masters Thesis
Establishing suitability of an ocean model for a poleward undercurrent study

Creator:

Duran, Rodrigo

Abstract:

Modifications of an ocean model are described, as the objective for which the model was used changed to study the kinematics and dynamics of an eastern-boundary poleward undercurrent.

Resource Type:

Capstone Project
Informing and Enhancing Scientific and Management Understanding of Oregon’s Nearshore Groundfish Trawl Fishery by Engaging Local Ecological Knowledge

Creator:

Sjostrom, Anja J. C.

Abstract:

Oregon’s Coastal nearshore ecosystems are a nexus between living marine resources and coincident human recreational, industrial and socio-economic development. These nearshore regions also provide habitats vital to early life history stages of commercial non-whiting groundfish species, which supplied 21% of the Oregon fishing economy in 2018. The very shallow portions...

Resource Type:

Masters Thesis
Investigation of Deep Seismic Reflections Beneath the Forearc in the South Central Chile Subduction Zone

Creator:

Zhang, Edward

Abstract:

The south central Chilean margin is one of the most seismically active subduction zones on Earth, generating some of the largest earthquakes on the planet, including the largest ever recorded in 1960 near Valdivia, Chile (Mw 9.5). Using the 15 km streamer and 6600 in3 tuned seismic airgun array aboard...

Resource Type:

Masters Thesis
Investigating rotating microelectrodes for rapid in situ detection of oxygen

Creator:

Chace, Peter J.

Abstract:

Rotating disc electrodes (RDEs) exploit the induced flushing of a radially spun electrode to increase the overall rate of analyte flux to an electrode sensing surface and its resulting signal current (i). Here initial efforts to evaluate a rotating platinum (Pt) microelectrode for efficacy as a rapid in situ dissolved...

Resource Type:

Masters Thesis
Breaking Ground: Automating the Detection of Refugee Settlement Establishment and Growth through Landsat Time Series Analysis with a Case Study in Northern Uganda

Creator:

Friedrich, Hannah

Abstract:

Globally, there are 40 million internally displaced people (IDPs) and 25.4 million refugees as of 2018. Of this global refugee population, 19.9 million are under mandate by UNHCR, the United Nations Refugee Agency, while 5.4 million Palestinian refugees are protected by United Nations Relief and Works Agency for Palestine Refugees...

Resource Type:

Masters Thesis
The Data Stream: Assessing the Flow of Real Time Marine Science Data from Research Vessel to the Classroom

Creator:

Miller, Danielle N.

Abstract:

Today’s technology-based society makes information more accessible than ever, in turn creating a growing demand for a workforce that has the skills necessary to utilize data. Contributing to this influx of data is Oregon State University (OSU), who was selected to guide the design and construction process of three Regional...

Resource Type:

Masters Thesis
Evaluation of Compartmentalized Aquifers in the Walla Walla Subbasin of Oregon Using Isotopic and Geochemical Tracers

Creator:

van Stolk, Courtney A.

Abstract:

The Walla Walla Subbasin (WWSB) in Oregon is underlain by formations of the extensive Columbia River Basalt Group (CRBG) which have been deformed by post-Miocene folding and faulting. Extensive irrigation with groundwater from these basalt groups, as well as sedimentary aquifers and surface water diversions from the Walla Walla River,...

Resource Type:

Masters Thesis
An Exploration of the Research Capacity Building Potential of Informal Higher Education Marine Science Programs in an International Context

Creator:

Moskel, Jennifer M.

Abstract:

Informal higher education science learning programs are increasingly being used as a tool to build scientific research capacity. However, there is low understanding of the impact that these programs on their target audiences, which is important to future capacity building efforts and program design. The purpose of this research project...

Resource Type:

Masters Thesis
Professional Development Training in Ocean Acidification: A Case Study of Marine Resource Managers

Creator:

Moses, Michael L.

Abstract:

Ocean acidification (OA) is the result of increasing concentrations of anthropogenic carbon dioxide (CO₂) emissions, leading to a suite of alterations to specific parameters of ocean chemistry, which can negatively impact many marine organisms and ecosystems. Understanding how to measure and monitor the chemistry of OA will require specialized education...

Resource Type:

Masters Thesis
Examining the Effects of Artisanal, Small-scale Gold Mining on Livelihood Assets in Kedougou, Senegal

Creator:

Zoch, Grant L.

Abstract:

The frontlines of climate change adaptation will occur in rural, impoverished regions of the world where households engage in climatically dependent livelihoods, such as peasant agriculture or pastoralism. As changing climate and changing markets affect the suite of household livelihood assets (environmental, social, and economic) which enable a household to...

Resource Type:

Masters Thesis
Designing and Delivering Effective Two-Way Science Communication Tools: A Case Study of NOAA West Watch Webinars

Creator:

Mazur, Emily N.

Abstract:

Research across natural resource management disciplines has identified an implementation gap between researchers and managers, where institutional norms and practices limit the application and synthesis of novel data and observations in decision-making. With their increasing social media and internet presence, federal agencies have grown their communication portfolios past traditional communication...

Resource Type:

Masters Thesis
Timing and Composition of Volcanism at Harrat Ithnayn, Western Saudi Arabia

Creator:

Alhejji, Suhail

Abstract:

Western Saudi Arabia hosts a number of young volcanic fields, known as “Harrats”. Harrats cover a significant proportion of western Saudi Arabia and are associated with significant volcanic hazards. However, the ultimate cause of volcanic activity remains unclear. Younger volcanism (<12 Ma) is clearly represented by the north-south-trending region known...

Resource Type:

Masters Thesis
The Deep Sea and Me: A Design-Based Research Study to Advance Public Literacy of the Deep Sea Using an Exhibit at a Public Marine Science Center

Creator:

Darr, Katherine D.

Abstract:

With growing populations and consumer demand, there has been a turn to the deep sea to meet our natural resource needs. The deep sea provides a range of benefits to humans—called ecosystem services—including carbon sequestration, fisheries, waste absorption and detoxification, and nutrient cycling, all of which are vital to life...

Resource Type:

Masters Thesis
Petrological Forensics of the Mount Sinabung, Sumatra, Indonesia Magma Reservoir before May 2016 Dome Collapse

Creator:

Bowers, Jade M.

Abstract:

Mount Sinabung, Sumatra, Indonesia initiated eruptive activity in 2010 with the addition of a magmatic component in 2013, after a 3 year period of quiescence. Observations of magmatic activity began with phreatomagmatic eruption starting July 2013 closely followed by extrusion of andesitic lava in December 2013. Lava effusion has persisted...

Resource Type:

Masters Thesis
Perceptions of a Changing Ocean: Resilience and Oregon's Commercial Fishing Community

Creator:

Haugen, Brianna I.

Abstract:

The complex challenges that Oregon’s commercial fishing community faces are mainly driven by four sources of change: climate change, change in management regulations, societal shifts, and market trends. Challenges include increasing competition for ocean use, management decisions that prioritize economic efficiency over community values, and an increasingly uncertain environment. The...

Resource Type:

Masters Thesis
Creating a Predictive Model of Cinder Cone Evolution in Central Oregon

Creator:

Das-Toke, Shyam P.

Abstract:

Cinder cones are useful geomorphic features for geological analysis because they generally have known initial states and follow a similar pattern of degradation as they are exposed to erosive processes. This is largely because cinder cones are produced by monogenetic eruptions. Characterizing large cinder cone fields in terms of age...

Resource Type:

Masters Thesis
Adapting the Community Based Social Marketing Framework to Create Actionable Messages About Plastic Pollution at the Oregon Coast Aquarium

Creator:

Nalven, Katharine B.

Abstract:

Because of their convenience and durability, single-use plastic items have become a ubiquitous part of society since the 1930s. The overuse of these convenient and durable plastic items has created a social and environmental problem that plagues our oceans and waterways. While the issue is overwhelming and daunting, it is...

Resource Type:

Masters Thesis
Drivers of Euphausiid Abundance and Biomass in the Kitimat Fjord System, BC Canada

Creator:

Qualls, Katelyn M.

Abstract:

Euphausiids are recognized as essential components of marine food webs throughout the world’s oceans due to their role as prey for many species including whales, seabirds, and commercial fishes. The Kitimat Fjord System is an important fisheries area and is the only fjord habitat on the British Columbia coast that...

Resource Type:

Masters Thesis
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
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
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
Unrealized Economic Benefits in the West Coast Non-Whiting Groundfish Trawl Fishery

Creator:

Gann, Aaron K.

Abstract:

In Oregon, commercial fishing is estimated to contribute $544 million in income and 10,000 jobs per year to coastal communities. However not all fisheries are reaching their allocated quotas for catch. In 2017, 187.6 million pounds of non-whiting groundfish trawl quota worth $67 million was not attained, nearly three times...

Resource Type:

Masters Thesis
Role of the Sisters Fault Zone in the Separation of Siletzia from the Cascadia Backarc

Creator:

Mark-Moser, MacKenzie

Abstract:

Oblique subduction of the Juan de Fuca plate beneath the North American plate characterizes the tectonic setting of the Pacific Northwest. North American plate deformation at the latitude of central Oregon consists of the clockwise-rotation of the Siletzia block in the forearc and the extensional Basin and Range province in...

Resource Type:

Masters Thesis
Geomorphic Evidence for Differential Rock Uplift Across the Southern Cascadia Forearc

Creator:

von Dassow, Wesley

Abstract:

The nature of upper plate deformation along the Cascadia subduction zone (CSZ) is poorly understood. Systematic covariation among topographic relief, geodetically determined uplift rates, decadal to millennial erosion rates, and the frequency of episodic tremor and slip (ETS) along the Cascadia forearc suggest a genetic association between forearc topography and...

Resource Type:

Masters Thesis
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
Social reconstruction in dam-induced displacement: A case study of four resettlement projects on the Lancang River, China

Creator:

Tang, Yingqi

Abstract:

Involuntary movement, also known as forced displacement, has affected millions of people worldwide. At the end of 20th century, approximately 80 million people had been displaced due to hydropower projects, including approximately 22.5 million people in China. Dam-induced migration not only causes material loss, such as loss of homes and...

Resource Type:

Capstone Project
Quantifying Sensitivity and Adaptive Capacity of Shellfish in the Northern California Current Ecosystem to Increasing Prevalence of Ocean Acidification and Hypoxia

Creator:

Gossner, Hannah M.

Abstract:

The severity of carbonate chemistry changes from ocean acidification is predicted to increase greatly in the coming decades, with serious consequences for marine species- especially those reliant on calcium carbonate for structure and function (Fabry et al. 2008). The Northern California Current Ecosystem off the coast of US West Coast...

Resource Type:

Masters Thesis
Evidence for Strengthening Hadley Cells and a Westward Expansion of the Walker Circulation from Assimilation of Paleoclimate Proxy Data

Creator:

Horlick, Kaleb A.

Abstract:

A synthesis of over 2000 paleoclimate proxy records is performed via a data assimilation framework that expands upon previous efforts by implementing a suite of physically-based proxy system models, and which provides the first example of an observationally independent, multi-seasonal (DJFM, JJAS) paleoclimate reanalysis. This methodology is contrasted against previous...

Resource Type:

Masters Thesis
Ecological Consequences of Marine Debris: Understanding Large-Scale Species Transport on Tsunami Debris and Research Priorities in Oregon

Creator:

Gillman, Reva A.

Abstract:

The release of marine debris into the oceans and seas is a global issue of growing concern. These materials are harmful to marine environments and can also transport non-native species to novel habitats. Non-native species floating on marine litter is one of the lesser known impacts associated with marine debris....

Resource Type:

Masters Thesis
Comparison of habitat restoration and enhancement methods for Olympia oysters (Ostrea lurida) in Yaquina Bay, Oregon

Creator:

Law, Karen H.

Abstract:

The Olympia oyster is a foundation species that increases habitat structure for associate species in estuarine systems of the Pacific Coast of North America (Kimbro & Grosholz, 2006). This oyster provides ecosystem services in the form of water filtration (zu Ermgassen et al., 2013), habitat for commercially valuable species such...

Resource Type:

Masters Thesis
Training Law Enforcement for Marine Resource Management: A Case Study Analysis of Retention and Perception Impacts From an e-Learning Platform

Creator:

Morrow, Peter T.

Abstract:

As societies we face many environmental issues that need to be addressed through sound management. Whether in the terrestrial or marine environment, effective management techniques from natural resource management (NRM) agencies must be used continually to address these issues. Law enforcement has been used as one approach and an extension...

Resource Type:

Masters Thesis
Assessing the Role of Snow Cover for Regenerating Forests over Post-wildfire Landscapes in the Pacific Northwest

Creator:

Wilson, Andy C.

Abstract:

Forested, mountain landscapes in the Pacific Northwest (PNW) are changing at an unprecedented rate, largely due to shifts in the regional climate regime. Documented climatic trends across the PNW include increasing wildfire frequency and intensity and an increasingly ephemeral snowpack, especially at moderate elevations. One relationship that has yet to...

Resource Type:

Masters Thesis
Are Refugee Camps Refuges? A Spatially Explicit Analysis of Security Threats to African Refugee Camps (1997-2016)

Creator:

Fein, Frieda

Abstract:

Despite the growth of the global refugee population, the proliferation of refugee camps, and the personal experiences of many refugees with violent conflict, there is little systematic understanding of the relationships between conflict events, conflict actors, and refugee communities. Indeed, conflict in and around refugee camps has thus far only...

Resource Type:

Masters Thesis
Flow From Flexibility : Identifying Opportunities For Streamflow Restoration in a Transboundary Municipal Watershed Through Water Budgeting

Creator:

Pierson, Jessica S.

Abstract:

Municipal watersheds attempt to balance growing and conflicting demands for water for human use and for ecosystems. The Mill Creek basin, a 295 km2 basin in southeast Washington, exemplifies these conflicts. Since the late 1800s, the City of Walla Walla has withdrawn water from Mill Creek for municipal use. However,...

Resource Type:

Masters Thesis
Establishing interest in and understanding of the marine environment : an educational and cooperative approach utilizing an open source CTD

Creator:

Black, Ian

Abstract:

A number of groups in the United States have expressed concern regarding the state of public ocean literacy and the capabilities of the future marine STEM workforce. This pilot study explores some of the requirements for workforce development and the expansion of ocean literacy by introduction of fundamental ocean properties...

Resource Type:

Masters Thesis
Resurgent Uplift of Samosir Island in Toba Caldera, Indonesia : Insights from Lake Sediment Paleomagnetism and C-14 Age Determination

Creator:

Solada, Katharine

Abstract:

Around 74 ka, a supervolcano, Toba Caldera in Sumatra, Indonesia erupted, producing the Youngest Toba Tuff and its associated caldera. After this catastrophic eruption, a lake filled the caldera, sedimentation within the lake occurred, and the process known as resurgence began. Today, the resurgent dome, Samosir Island, is uplifted 700...

Resource Type:

Masters Thesis
Effects of Teaching Household Actions to Address Ocean Acidification on Student Knowledge and Attitudes

Creator:

Erickson, Brian D.

Abstract:

Ocean acidification (OA), the change in ocean chemistry due to increasing concentrations of anthropogenic carbon dioxide in the atmosphere, is an environmental problem that is an active area of scientific research yet remains largely outside of the public’s awareness. It is often assumed that if we raise OA awareness, then...

Resource Type:

Masters Thesis
On the Edge : Assessing Fish Habitat Use Across the Boundary between Pacific Oyster Aquaculture and Eelgrass in Willapa Bay, WA

Creator:

Muething, Kelly A.

Abstract:

Estuaries are an important ecological link between terrestrial, freshwater, and marine systems, but are also subject to a variety of human pressures. Along the West Coast of the United States, shellfish aquaculture is one extensive use of estuarine tidelands. Specifically, Pacific oyster (Crassostrea gigas) aquaculture has been practiced for almost...

Resource Type:

Masters Thesis
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
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
Adaptive Meets Precautionary: Navigating Risk and Rules in Collaborative Marine Renewable Energy Permitting Processes

Creator:

Burright, Jeffrey D.

Abstract:

Despite its promise as a potentially beneficial new source of energy, the ocean-based renewable energy industry is still in its infancy, and like any new idea there are many unknowns with the potential to affect both people and our natural environments. A permit for marine renewable energy (MRE) must cut...

Resource Type:

Masters Thesis
A Tale of Two Counties : Exploring Co-Produced Coastal Adaptation Strategies in Tillamook County, OR and Grays Harbor County, WA

Creator:

Evans-Wilent, Janan K.

Abstract:

Coastal communities throughout the US West Coast and elsewhere are facing the daunting task of preparing for climate change impacts, particularly the hazards from increased flooding and erosion. With sea-level rise, changing storminess patterns, and possible changes to the frequency and severity of major El Niño events, communities are already...

Resource Type:

Masters Thesis
The Occurrence of Coastal Sea Ice Leads and their Impact on the Beaufort Gyre

Creator:

Lewis, Benjamin J.

Abstract:

Leads are long fractures wide enough for a ship to travel through the ice pack. Sea ice acts as a barrier between the ocean and the atmosphere, whereas leads allow the transfer of heat and moisture between the two. Leads play a role for marine mammals and are hunting grounds...

Resource Type:

Masters Thesis
Local and Regional Patterns in Eelgrass (Zostera marina L.) Communities Along an Upwelling-Productivity Gradient in Oregon Estuaries, USA

Creator:

Motley, Jennifer

Abstract:

In this thesis, I investigate the organization of eelgrass (Zostera marina L.) and mesograzer communities across local and regional scales in three upwelling- influenced estuaries located along the Oregon coast, USA. Eelgrass ecosystems are an important source of primary production in estuarine systems, providing numerous ecosystem services, including nursery habitat...

Resource Type:

Masters Thesis
A high-performance Web Graphics Library-based Automatic Identification System data visualization platform

Creator:

Chen, Likun

Abstract:

The magnitude of global AIS data exceeds the capability of conventional in-browser graphic rendering technologies like Scalable Vector Graphics (SVG) and Canvas. Normal practices of rendering AIS data in browser will either suffer from low frame rates or will have to limit the total number of visual elements. In this...

Resource Type:

Capstone Project
Particulate Trace Metal Fluxes in the Western Arabian Sea and Their Links to Marine Productivity

Creator:

Flannery, Kelly M.

Abstract:

Many trace elements (e.g., Zn, Cd, Mo) are essential phytoplankton micronutrients, making them crucial to the marine ecosystem and ultimately the carbon cycle. Because of this association trace metals are also utilized in paleoceanographic studies (e.g., Mo, Cd). However, not much is known about what controls the cycling of these...

Resource Type:

Masters Thesis
An Evaluation of the Complex Age Progression along the Cook-Austral Islands Using High-resolution ⁴⁰Ar/³⁹Ar Incremental Heating Ages

Creator:

Rose, Joanna

Abstract:

The Cook-Austral island chain has been the center of debate for many years. Contrary to the classical hotspot hypothesis, this volcanic island chain does not exhibit a linear age progression with a single node of active volcanism, but instead shows evidence of young volcanism at several points along the chain....

Resource Type:

Masters Thesis
Autonomous in situ measurements of estuarine surface PCO₂ : instrument development and initial estuarine observations

Creator:

Wall, Colleen McKay

Abstract:

A novel, low-cost instrument capable of measuring surface water PCO₂ was designed for use in dynamic, shallow-water environments. The instrument was tested in the Yaquina River Estuary, a macrotidal estuary known to experience a wide range of conditions ranging from dominance by the coastal ocean during summer upwelling to substantial...

Resource Type:

Masters Thesis
Insights from stable isotope dynamics into the sensitivity of larval Pacific oysters to ocean acidification

Creator:

Brunner, Elizabeth Lev

Abstract:

Larvae of the Pacific Oyster, Crassostrea gigas, at Whiskey Creek Shellfish Hatchery (WCH) in Netarts Bay, Oregon, are negatively impacted by high-CO₂ water and exposure during the initial shell formation period appears to be particularly damaging. To investigate the mechanism of this early susceptibility, several cohorts of larvae at WCH...

Resource Type:

Masters Thesis
Modeling Arctic melt ponds using a resolved ice model with GCM forcing

Creator:

Collins, Lee E.

Abstract:

The albedo of Arctic sea ice depends greatly on the formation of melt ponds. These ponds form in depressions on the ice as surface snow melts during the summer months, and their location is determined mainly by the initial snow topography. Using a high resolution sea ice model forced with...

Resource Type:

Masters Thesis
Preferences and Strategies of Interest Groups and their Constituents in the Responsible Development of Wave Energy Technology in Oregon

Creator:

Covell, Zachary

Abstract:

During 2007 proposals for wave energy technology projects in Oregon's nearshore stirred up attention as interest groups experienced rapid changes both socially and economically. The purpose of this research was to analyze factors influencing interest groups and their membership so as to examine their preferences and strategies pertaining to emerging...

Resource Type:

Masters Thesis
Youth Recruitment and an Aging Workforce : A Pilot Study of Intergenerational Family Business in Oregon’s Commercial Fishing Industry

Creator:

Caracciolo, Deanna E.

Abstract:

Commercial fishing is a culturally and economically significant industry on the Oregon coast. The importance of this industry to human communities is often neglected in fisheries research, with economic and ecological data being favored by managers and decision makers. Recent observations in many coastal communities have indicated aging of fishermen...

Resource Type:

Masters Thesis
Surfing the Cascadia Subduction Zone: Risk perceptions and evacuation knowledge among Oregon surfers

Creator:

Shelby, Daniel

Abstract:

Evacuation strategies have been established for most user groups in tsunami inundation zones; however, surprisingly little information is available for a growing visitor group - surfers. For near-shore tsunami events, Oregon surfers, who recreate in the nearshore region, must make life or death choices when deciding what to do in...

Resource Type:

Masters Thesis
Natural-color maps via automated coloring of bivariate grid data

Creator:

Darbyshire, Jane E.

Abstract:

Natural ground color is useful for reference maps as well as maps where a realistic representation of the Earth's surface matters. Natural color schemes are less likely to be misinterpreted, as opposed to hypsometric color schemes, and are generally preferred by map readers. The creation of natural-color maps was once...

Resource Type:

Masters Thesis
The Fully-Coupled One-Dimensional Arctic Surface Energy Budget: Climatology and Projections

Creator:

Kula, Michael R.

Abstract:

Arctic sea ice concentration and volume have declined due to greenhouse gas radiative forcing and an overall positive climate feedback. At the same time, there have been noteworthy weather and climate circulation anomalies both within the Arctic and extending through the midlatitudes and even into the tropics, leading some studies...

Resource Type:

Masters Thesis
Spatial relationships for vegetation in restored and reference salt marshes in the Salmon River Estuary, Oregon

Creator:

Chellew, Megan

Abstract:

In this thesis, the spatial patterns of vegetation and soils of reference and restored tidal marshes were compared to determine the extent to which restored sites differ from the reference site after 40 years of restoration. Vegetation surveys of 1m x 1m plots were conducted along previously-established transects of salt...

Resource Type:

Masters Thesis
Functional Comparison of Longline Oyster Aquaculture and Eelgrass (Zostera marina L.) Habitats Among Pacific Northwest Estuaries, USA

Creator:

Clarke, Larissa M.

Abstract:

Understanding the ecological role of Pacific oyster aquaculture (Crassostrea gigas) and eelgrass (Zostera marina L.) as important habitats in US Pacific Northwest estuaries is critical for management and regulatory decisions. The oyster aquaculture industry is currently restricted by regulations concerning impacts of their activities on Z. marina. This seagrass is...

Resource Type:

Masters Thesis
Groundwater Flow Modeling at Santa Susana Field Laboratory

Creator:

Gardner, Gerrit T.

Abstract:

Understanding groundwater flow in faulted and fractured rock is an important frontier in the field of environmental remediation and in the management of water resources. One example of a site where this is particularly evident is the Santa Susana Field Laboratory (SSFL) in Ventura County, CA where environmental remediation activities...

Resource Type:

Masters Thesis
Growth, Condition, and Survival of Larval Arctic Cod and Walleye Pollock in a Warming Ocean

Creator:

Koenker, Brittany L.

Abstract:

Arctic cod (Boreogadus saida) is an ecologically significant species that plays a critical role channeling energy throughout the Arctic marine food web. Arctic cod is uniquely adapted to occupy ice edge habitats, however, a basic understanding of its larval physiology and habitat requirements is lacking due to widespread sea ice...

Resource Type:

Masters Thesis
A Broader Overview and Investigation into Seafood Traceability Developments and the Current Landscape for the US West Coast Seafood Industry

Creator:

Ahlers, Brian L.

Abstract:

Seafood is one of the most diverse and highly traded natural resources worldwide. Widespread evidence of increased seafood fraud and IUU fishing has placed enormous pressure on industry and governments to determine the authenticity, safety, and sustainability of seafood. The recently established US National Ocean Council has addressed several gaps...

Resource Type:

Masters Thesis
Intrusion Sequence and Hydrothermal Fluid Evolution of Encuentro Porphyry Cu-Mo-Au deposit, Northern Chile

Creator:

Osorio C., Jaime

Abstract:

This dissertation is divided into two major chapters. The first chapter covers the geologyof the Encuentro deposit with emphasis in the intrusion sequence, vein mineral assemblages and distribution, and age of mineralization. The data used for this section includes field mapping, petrography, elemental analysis of biotite, and isotopic geochronology. The...

Resource Type:

Masters Thesis
Using a Two-Species Individual-Based Model to Examine the Population Responses of Northern Spotted Owls to Experimental Removals of Barred Owls in the Pacific Northwest

Creator:

Perlman, Kathryn R.

Abstract:

Management goals for restoring populations of the federally-threatened northern spotted owl currently include experimental lethal removals of barred owls from demographic study areas within the overlapping ranges of the two species to examine northern spotted owl population response. As lethal removals of a bird species are time- and cost-intensive, predictive...

Resource Type:

Masters Thesis
Coastal ocean variability inferred from high resolution models : two case studies

Creator:

Mauch, Matthew L.

Abstract:

In this thesis, high resolution ocean models are used to evaluate and forecast coastal ocean variability in two different applications. In the first study, the 2-km resolution ocean circulation model for the Eastern Bering Sea is utilized to understand whether slope-interior exchange along the path of the Aleutian North Slope...

Resource Type:

Masters Thesis
Automation and Evaluation of Graduated Dot Maps

Creator:

Arnold, Nicholas D.

Abstract:

Dot mapping is a traditional method for visualizing quantitative data, but current automateddot mapping techniques are limited. The most common automated method places dotspseudo-randomly within enumeration areas, which can result in overlapping dots and verydense dot clusters for areas with large values. These issues affect users’ ability to estimatevalues. Graduated...

Resource Type:

Masters Thesis
Seagrasses as Potential Chemical Refugia for Acidification-Sensitive Bivalves

Creator:

Smith, Stephanie Rae

Abstract:

As the effect of ocean acidification (OA) on marine calcifiers is better understood, a range of potential mitigative strategies have been proposed, many of which are plagued by concerns of scale and feasibility. One oft-cited option is to increase the biomass of photosynthetic organisms to remove CO₂ from the water...

Resource Type:

Masters Thesis
Using EarthScope Magnetotelluric Data to Improve the Resilience of the US Power Grid: Rapid Predictions of Geomagnetically Induced Currents

Creator:

Bonner, L. Roy, IV

Abstract:

Geomagnetically Induced Currents (GICs) are quasi-DC signals that are induced in the ground during geomagnetic disturbances (GMDs) and pose a large threat to power grid infrastructure. The power industry currently attempts to mitigate GIC effects by utilizing 1-D ground electrical conductivity based electric field predictions, though conductivity can vary in...

Resource Type:

Masters Thesis
Linear theory of roll instabilities in the ocean surface layer

Creator:

Duncombe, Jenessa R.

Abstract:

This thesis describes the results of a linear stability analysis conducted on a simulated wind-forced ocean front. The ocean surface boundary layer regulates exchanges between the ocean and atmosphere, and the presence of turbulence in the surface layer can greatly impact climate and ocean life. Past research has shown that...

Resource Type:

Masters Thesis
Competing Roles of Sea Level Rise and Sediment Supply on Sediment Accretion and Carbon Burial in Tidal Wetlands; Northern Oregon, USA

Creator:

Peck, Erin K.

Abstract:

Quantification of contemporary sediment and carbon accumulation within Oregon tidal saline wetlands will: (1) fill a critical knowledge gap, and (2) naturally test without complicating variables whether sea level rise or sediment supply primarily control wetland growth. Here we measure vertical accretion rates and carbon burial rates in three Oregon...

Resource Type:

Masters Thesis
Spatial and Temporal Dynamics of Broad-scale Predictive Models : Influences of Scale

Creator:

Hooper, Samuel

Abstract:

Developing accurate predictive distribution models requires adequately representing relevant spatial and temporal scales, as these scales are ultimately reflective of the relationships between distributions and influential environmental conditions. In this research, we considered both spatial and temporal scale and the influence each has on predicting broad-scale distributions of two disparate...

Resource Type:

Masters Thesis
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
Crustal heat flow and thermal modeling of the Hikurangi Trough, New Zealand

Creator:

Antriasian, Anson M.

Abstract:

Measuring surface heat flow at the Hikurangi Trough is key toward characterizing the local thermal regime and the influence of thermally sensitive processes such as fluid flow and slow slip. Marine heat flow data were collected during May– June 2015 in the northern Hikurangi Trough at sites seaward and landward...

Resource Type:

Masters Thesis
Source Parametrization of Earthquakes along Juan de Fuca Transform Boundaries

Creator:

Sapkota, Birat

Abstract:

The Juan de Fuca plate system is what remains of Farallon plate subducting under the continental North American plate. Blanco Transform Fault Zone (BTFZ) consists of a network of strike-slip faults discontinued by pull apart depressions which o↵sets the Juan de Fuca Ridge and the Gorda Ridge. Detailed analysis of...

Resource Type:

Masters Thesis
Earthquake Relocation in Three-Dimensional Velocity Models for Central Cascadia Continental Margin

Creator:

Ghorbani, Paria

Abstract:

We used data from Cascadia Initiative and Blanco Transform Fault Zone array of ocean bottom seismometers and hydrophone to look at the seismicity and specially depth of the Central Cascadia Continental Margin events. Events were detected and located automatically with Antelope software package (Boulder Real Time Technologies). We looked at...

Resource Type:

Capstone Project
Earthquake Relocation in Three-Dimensional Velocity Models for Central Cascadia Continental Margin

Creator:

Ghorbani, Paria

Abstract:

We used data from Cascadia Initiative and Blanco Transform Fault Zone array of ocean bottom seismometers and hydrophone to look at the seismicity and specially depth of the Central Cascadia Continental Margin events. Events were detected and located automatically with Antelope software package (Boulder Real Time Technologies). We looked at...

Resource Type:

Capstone Project
Restoring the Columbia River Estuary : Chinook Salmon Recovery and Invasive Species Management

Creator:

Klopfenstein, Rachael

Abstract:

As highlighted in this study, shallow-water habitats and the prey they provide are important for juvenile salmon in the Columbia River estuary, but the spread of invasive species and large-scale changes to the estuary influence how these habitats are utilized. Reed canarygrass (Phalaris arundinacea) (“PHAR” hereafter) is a highly invasive...

Resource Type:

Masters Thesis
Automated Layout of Origin-destination Flow Maps : U.S. County-to-county Migration 2009-2013

Creator:

Stephen, Daniel M.

Abstract:

Visualizing large movement datasets with flow maps is difficult because overlapping flows create significant graphical conflicts that make accurate interpretation difficult or impossible. Interactive flow mapping applications allow users to explore large movement datasets by automatically generating flow maps from subsets of the data in response to queries by the...

Resource Type:

Masters Thesis
Post-Aggregate Aggregation : A Geographic Evaluation of Enhancement Reclamation at Aggregate Mines in the Western United States

Creator:

Morrison, Elizabeth A.

Abstract:

The aggregate industry is responsible for the extraction and production of crushed stone, sand, and gravel— the literal building blocks of our society. Across the U.S. there are tens of thousands of quarries and sand and gravel pits, the majority of which are left abandoned or with minimal reclamation efforts....

Resource Type:

Masters Thesis
Structural Evolution, Vein Orientation, and Paragenesis of the Botija Porphyry Cu-Mo-(Au) Deposit, Colón, Panamá

Creator:

Sepp, Michael D.

Abstract:

The Botija Cu-Mo-Au porphyry deposit is located in the Cobre Panamá mining district, which contains several deposits with a global measure and indicated and inferred resource of 14.8 MT of Cu. These deposits are associated with the Cerro Petaquilla batholith, which has U/Pb zircon ages of 26-33 Ma (Whattam et...

Resource Type:

Masters Thesis
The Effects of Artificial Structures on Estuarine Infaunal Communities and Offshore Biofouling Communities

Creator:

Mendoza, Maritza

Abstract:

For hundreds of years, coastal and marine ecosystems have experienced increasing threats due to the cumulative effects of increasing population growth and dependence on these ecosystems. Thus, there has been increased enthusiasm to mitigate the negative effects of human actions through the use of cleaner sources of energy, like marine...

Resource Type:

Masters Thesis
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
Decoding DOM Degradation with Metatranscriptomics : How Do Sunlight and Microbial Communities Interact to Degrade Dissolved Organic Matter in Arctic Freshwaters?

Creator:

Nalven, Sarah G.

Abstract:

Arctic soils are warming, making vast stores of organic carbon available for conversion to CO₂. This could create a positive feedback loop and accelerate global warming, but the processes that convert this carbon into CO₂ are not well understood. We investigated how the combined activities of sunlight and microbes degrade...

Resource Type:

Masters Thesis
Spatio-Temporal Patterns of Tree Establishment in the M1 Meadow of the H.J. Andrews Experimental Forest

Creator:

Jones, Katherine E.

Abstract:

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 spatial processes of tree establishment in these meadows are...

Resource Type:

Masters Thesis
Understanding Visitor Motivations for Attending Fee-based Animal Encounter Programs

Creator:

Huynh, Sandra

Abstract:

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 prices), which are commonly employed by zoos and aquariums to foster learning opportunities for visitors, are...

Resource Type:

Masters Thesis
Mitigating Microplastics : Development and Evaluation of a Middle School Curriculum

Creator:

Kowalski, Marie

Abstract:

Microplastics, plastic marine debris less than 5 mm in size, is a threat to the health of our oceans. One important way to reduce microplastics in our oceans is to educate people about the issue, particularly future decision-makers. In this study, a middle school curriculum was developed using current scientific...

Resource Type:

Masters Thesis
A 3-D Tomographic Model of the P-wave Velocity Structure of the Central Cascadia Forearc

Creator:

Kenyon, Christopher Bradford

Abstract:

Signals from the R/V Langseth’s tuned airgun array were recorded on an array of 33 EarthScope FlexArray seismometers deployed in the Oregon Coast Range from 43.5° to 45°N as part of the 2012 Ridge2Trench experiment to image the structure of the Juan de Fuca plate. This segment of the Juan...

Resource Type:

Masters Thesis
Eastward Routing of Glacial Lake Agassiz Runoff caused the Younger Dryas Cold Event

Creator:

Leydet, David J.

Abstract:

The purpose of this thesis is to analyze an abrupt case of climate change in the past as a means to understand the mechanisms that force climate change. By looking to past analogs of climate change, we hopefully will gain an understanding of these events, which could be used to...

Resource Type:

Masters Thesis
Evaluating Coastal Protection Services Associated with Restoration Management of an Endangered Shorebird in Oregon, U.S.A.

Creator:

Carroll, Lindsay J.

Abstract:

Coastal sand dunes and beaches offer a variety of ecosystem services such as coastal protection, sand stabilization, species conservation, and recreation. However, the management and balance of ecosystem services offered by dunes and beaches is challenging when ecosystem services interact across the landscape. Management focusing only on one ecosystem service...

Resource Type:

Masters Thesis
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
Eyes on the Seafloor : Using Video Tools to Monitor Benthic Communities at Dredged Material Disposal Sites at the Mouth of the Columbia River

Creator:

Fields, Stephanie A.

Abstract:

The mouth of the Columbia River (MCR) is an intersection of more than a river and ocean, but also multiple economically valuable activities including dredging to maintain a deep draft shipping channel and an active Dungeness crab (Metacarcinus magister) fishery. More than three million cubic meters of sediment are annually...

Resource Type:

Masters Thesis
Spatiotemporal Drivers of Seabird Distribution at the Pacific Marine Energy Center off Newport, Oregon

Creator:

Porquez, Jessica M.

Abstract:

The central Oregon coast was selected as an ideal site for wave energy development and establishment of the Pacific Marine Energy Center (PMEC). PMEC will consist of two nearshore sites, one north (NETS) and one south (SETS) of the Yaquina River, Oregon. Our study aims to assess how the development...

Resource Type:

Masters Thesis
Reconstructing the Physical Record of a Four-Million-Year Volcanic System : Geochemistry, Thermobarometry, and Geologic Map of the Mount Jefferson Area, Oregon

Creator:

DiGiulio, Jennifer

Abstract:

Volcanic and sedimentary deposits of the Mount Jefferson area (MJA) record a fourmillion-year history of arc-related volcanism related to the subduction of the Juan de Fuca plate beneath North America. 171 mapped stratigraphic units over an area of 150 km² reveal four periods of volcanic activity resulting in diverse composition...

Resource Type:

Masters Thesis
The Hampton Tuff, High Lava Plains, Oregon : Implications for Westward Migrating Silicic Volcanism

Creator:

Sanville, Henri J.

Abstract:

The Hampton Tuff is a 3.9 ± .02 Ma (2σ) ignimbrite sheet from the High Lava Plains of central Oregon. The majority of known outcrops exist to the north, within ~22 mi (~35 km) of the Frederick Butte Volcanic Center, the proposed source of the tuff. Thickness of the tuff...

Resource Type:

Masters Thesis
Local Seismicity Recorded by ChilePEPPER : Implications for Dynamic Accretionary Prism Response and Long-term Prism Evolution

Creator:

de Moor, Alexander

Abstract:

To investigate the dynamic response of the outer accretionary wedge updip from the patch of greatest slip during the Mw8.8 2010 Maule earthquake, 10 Ocean Bottom Seismometers (OBS) were deployed from May 2012 to March 2013 in a small array with an inter-instrument spacing of ~10 km. Nine instruments were...

Resource Type:

Masters Thesis
Citizen Science Research : A Focus on Historical Whaling Data and a Current Marine Mammal Citizen Science Project, Whale mAPP

Creator:

Hann, Courtney

Abstract:

Citizen science work has built the foundation of much of our knowledge on regional-scale large cetacean spatial patterns through historical whaling data. Historical whaling data on sperm whales was used as an example to show the type of ecological questions large-scale, long-term citizen science datasets can address. Results from the...

Resource Type:

Masters Thesis
Connecting Tidal-fluvial Life Histories to Survival of McKenzie River Spring Chinook Salmon (Oncorhynchus tshawytscha)

Creator:

Rose, Gordon W.

Abstract:

Chinook salmon returns to the Columbia River basin have declined due to impacts of a growing human population, despite significant mitigation expenditures. Consequently, fisheries managers have become focused on recovery and long-term viability of at-risk populations. A viable population depends, in part, on the connectivity and quality of diverse habitat...

Resource Type:

Masters Thesis

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Academic Affiliation

College of Earth, Ocean, and Atmospheric Sciences[remove]198

Advisor

Conway, Flaxen12
Conway, Flaxen D. L.8
Ciannelli, Lorenzo7
Dilles, John H.6
de Silva, Shanaka L.5
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 2011 to 2020

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Committee Member

Conway, Flaxen9
Jones, Julia9
Grunder, Anita8
Meigs, Andrew7
Egbert, Gary6
more Committee Members »

Conference Name

Deep Sea Biology Symposium1
Society for Applied Anthropology Annual Meeting1

Creator

Ghorbani, Paria2
Lam, Jennifer2
Wilson, Erin R.2
Ahlers, Brian L.1
Albright, Andrea1
more Creators »

Contributor

Gosnell, Hannah1
Kennedy, Robert E.1
Torres, Leigh G.1
van Den Hoek, Jamon1

Date

Date range begin – Date range end

Current results range from 2011 to 2019

View distribution

Decade

2010-2019[remove]198

Degree Field

Marine Resource Management79
Geography37
Geology34
Ocean, Earth, and Atmospheric Science28
Oceanography10
more Degree Fields »

Degree Level

Master's198

Degree Name

Master of Science (M.S.)[remove]198

Language

English [eng]198

License

All rights reserved177
Attribution 4.0 (CC BY 4.0)6

Location

Burial Lake, Alaska, United States, (Hydrographic)1
Colón, Colón, Panama, (Populated Place)1
Grays Harbor, Washington, United States, (Administrative Boundary)1
Tillamook, Oregon, United States, (Administrative Boundary)1
Uganda, , Uganda, (Administrative Boundary)1
more Locations »

Non-Academic Affiliation

Oregon State University. Graduate School129
Oregon State University. Sea Grant College Program8
Hatfield Marine Science Center1

Peer Reviewed

No197

Resource Type

Masters Thesis175
Capstone Project23
Presentation1

Rights Statement

In Copyright196
In Copyright - Non-Commercial Use Permitted2

Subject

Cascadia Subduction Zone3
Basalt2
Boundary layer (Meteorology)2
Climatic changes -- Oregon -- Tillamook County2
Contours (Cartography)2
more Subjects »

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