Index Catalog // ScholarsArchive@OSU

Atmospheric nitrous oxide in the pre-800 ka atmosphere from ice cores from the Allan Hills, Antarctica

Creator:: Stock, Marika P.
Abstract:: Nitrous oxide is an important greenhouse gas that has both natural and anthropogenic sources in the modern atmosphere (Ciais et al., 2013). This project expanded the knowledge of the history of atmospheric N2O in the geologic past by measuring N2O concentrations in air trapped in very old polar ice. A...
Resource Type:: Honors College Thesis
Full Text:: atmosphere (Ciais et al., 2013). This project expanded the knowledge of the history of atmospheric N2O in

Affable Akutan - History and Hazards

Creator:: Marks, Kevin
Abstract:: A history and analysis of hazards and mitigation efforts for Akutan Volcano, Alaska.
Resource Type:: Research Paper
Full Text:: Magmas At Two Volcanoes In The ! Alaska–! Aleutian Arc. Journal Of Petrology, 45(1), ! 203-219. Lander

Carbon isotopes show snowpack acts as a valuable moisture subsidy to mountain forests in the Oregon Cascades

Creator:: Ratcliff, Christopher J.
Abstract:: This study examines climatological influences, particularly that of snowpack, on tree growth and stable carbon isotope discrimination (Δ¹³C) from ~1980 to 2013 at two sites located in the upper reaches of the McKenzie River watershed of the Oregon Cascade Mountains. We tested the use of Δ¹³C values from latewood, corroborated...
Resource Type:: Undergraduate Thesis
Full Text:: of Geophysical Research 103: doi: 10.1029/98JD01169. issn: 0148-0227. 2. Brooks J, Barnard H.R

VOC Emisions and Categorization in Axenic Growth Conditions by Phaeodactylum tricornutum

Creator:: Thompson, Douglas A.
Abstract:: Volatile organic compounds (VOCs) play an integral role in climate change and as a carbon source for organisms living in a marine environment. These compounds have many sources, but the impacts of biogenically produced VOCs is not fully known. Phaeodactylum tricornutum was studied under axenic ideal growth conditions to determine...
Resource Type:: Undergraduate Thesis
Full Text:: the degree of Baccalaureate of Science in BioResource Research, Biotechnology Option

An analysis of seismicity at Mt. Hood, Oregon

Creator:: Currie, Michelle
Abstract:: Mt. Hood, in north-central Oregon, has experienced 13 M ≥ 3.0 earthquakes since 1980. 1812 earthquakes that range in magnitude from -1.1 to 4.5 have been recorded in the region during the same time frame. This paper analyzes four of the larger earthquakes to provide moment tensor solutions and relocated...
Resource Type:: Research Paper
Full Text:: geothermal energy potential. Journal of Geophysical Research, 87: B4, p. 2767-2781. 27 Wise, W. S

Unprecedented Retreat of Columbia Glacier Relative to the Last Millennium

Creator:: Kilmer, Zoe
Abstract:: Columbia Glacier, Alaska’s most rapidly retreating body of ice, provides a compelling insight into the fragile state of tidewater glaciers worldwide. Catastrophic retreat of the glacier’s terminal ice margin began in 1978 when contact was lost with its stabilizing terminal moraine shoal. Since this time, Columbia Glacier has lost ~20...
Resource Type:: Undergraduate Thesis
Full Text:: ., 1987, Fast Tidewater Glaciers: Journal of Geophysical Research, v. 92, p. 9051- 9058. Miller, E

Stomach Analysis of Top Aquatic Predators in a Headwater Stream Network

Creator:: Ain, Najma
Abstract:: Top predators play important roles in regulating communities and ecosystem processes in freshwater ecosystems. In the headwater stream network, it is crucial to understand the interspecific interaction between multiple predators. In Oregon forested ecosystems, Coastal Giant Salamander (Dicamptodon tenebrosus) and cutthroat trout (Oncorhynchus clarkii) are the top predators in many...
Resource Type:: Undergraduate Thesis
Full Text:: for BioResource Research. My signature below authorizes the release of my project and thesis to any

Opportunities and Limitations in Achieving Real-Time Observation of Soil Nitrate

Creator:: Auld, Ryan A.
Abstract:: There are many possible benefits that can arise from the ability to take real-time measurements of soil water nitrate concentrations in a field, from ecological to agricultural to industrial reasons. In order to achieve this, we adapted a NitraLED sensor with a ceramic porous cup in order to allow diffusion...
Resource Type:: Honors College Thesis
Full Text:: requirements for the degree of Honors Baccalaureate of Science in BioResource Research (Honors

Coralline and fleshy algae volume density on epifaunal communities

Creator:: Field, Samuel J. and Gani, Christopher D.
Abstract:: Carbon dioxide emissions greatly affect the carbon chemistry mechanisms within the ocean. Carbon absorbed by the ocean, drops the pH level and creates an environment that is acidic. Acidic conditions prevent calcification mechanisms in coralline algae, and hinder their ability to establish within the intertidal. Coralline algae display structural relevance...
Resource Type:: Research Paper
Full Text:: from the atmosphere helps reduce the impact of greenhouse gases but increases the rate at which ocean

Microplastic distribution and abundance in mussels along the California and Oregon coasts

Creator:: Mangino, Inez
Abstract:: Plastic contamination in the world’s oceans is a considerable threat to the health of the environment, marine ecosystems and humans. In this study, the distribution and quantity of microplastics amongst mussels (Mytilus californianus) was investigated. Mussels were collected and outplanted for a year at 9 sites along the Oregon and...
Resource Type:: Research Paper
Full Text:: , Geostrophy, and Stokes Drift in the Accumulation of Floating Microplastic. Journal of Geophysical Research

Two Advances in Practical Alternative Energy: Thermotolerant Hydrogenase Concentration and Methane Hydrate Grain Size Proxies.

Creator:: Sullivan, Nichole D.
Abstract:: Methane hydrates and biohydrogen are two disparate subjects that are of interest in the growing field of alternative energy research. However, before commercial use becomes a viable option, each has challenges that need to be overcome. Methane hydrates require large investments of time and capital to locate. In this thesis,...
Resource Type:: Honors College Thesis
Full Text:: two disparate subjects that are of interest in the growing field of alternative energy research

Preliminary Evidence that the Microbial Community may Produce Aliphatic Constituents and Induce Soil Water Repellency as a Response to Desiccation

Creator:: Chilcote, Emma T.
Abstract:: Soil water repellency is one cause of rill soil erosion and overland flow that results in the loss of fertile topsoil. Previous research suggests that since microbial growth depends on temperature/moisture and follows diurnal and seasonal cycles, a biological mechanism would be able to explain the observed seasonality and climate...
Resource Type:: Honors College Thesis
Full Text:: Baccalaureate of Science in BioResource Research (Honors Scholar) Presented June 27, 2018

An Improved Chemical Kinetic Model Reduction in pyMARS for Liquid Propellants

Creator:: Moore, Cailin J.
Abstract:: The aerospace industry uses chemical kinetic models when designing propulsion systems to acquire specific details about the rate of chemical reactions, heat release, and combustion stability. These models, however, are too large and stiff to be useful as they can take weeks to run computations on. The pyMARS python package...
Resource Type:: Honors College Thesis
Full Text:: research with established reduction algorithms to accu- rately reduce the size of these models to only the

Mismatch Repair-Dependent Cellular Responses to Polycyclic Aromatic Hydrocarbons: An Investigation of Research Methods and Materials

Creator:: Wickramanayake, Anneka
Abstract:: Polycyclic aromatic hydrocarbons (PAHs) are carcinogenic chemical compounds found in the environment, largely as a result of partial combustion of organic compounds. PAHs are present in the atmosphere in populated cities worldwide. Because of the health risks they create, PAHs are a global health concern. PAHs are introduced into the...
Resource Type:: Honors College Thesis
Full Text:: Polycyclic AromaticHydrocarbons: An Investigation of Research Methods and Materials. Abstract Approved

Hydrogeography of Cloudburst Flooding in the Himalaya

Creator:: Michelsen, Sonja
Abstract:: Even though cloudburst events in high mountain areas can be highly destructive and result in significant losses of life, little is known definitively about these flood events. An exact understanding of the driving processes, typical precipitation rates, and impacts of cloudburst events remain uncertain. This study seeks to advance knowledge...
Resource Type:: Honors College Thesis
Full Text:: direction for future research. Hydrogeography of Cloudburst Flooding in the Himalaya S. Michelsen

Effects of estuary characteristics and tsunami waveforms on transported sand sheets

Creator:: Armstrong, Emma M.
Abstract:: The details of the 1700 Cascadia Subdction Zone earthquake and tsunami can be better constrained using data from tsunami sand sheets, provided knowledge of the waveform, estuary geometry and bed roughness controls on the deposition pattern of the sand sheet. In this study, we use the hydrodynamic and sediment transport...
Resource Type:: Undergraduate Thesis
Full Text:: Cascadia earthquake inferred from Japanese tsunami descriptions, Journal of Geophysical Research: Solid

Viscous Effects of Wetting and Non-Wetting Fluids on Capillary Trapping Mechanism: A Climate Change Mitigation Strategy.

Creator:: Fobi, Simone
Abstract:: Rising CO₂ concentrations in the atmosphere (396 ppmv as of April 2012) increase the effect of global warming and climate change. CO₂ sequestration has become a potential method to mitigate climate change. This study focuses on capillary/residual trapping as a form of geologic CO₂ sequestration. Capillary/residual trapping occurs when supercritical...
Resource Type:: Honors College Thesis
Full Text:: : Dorthe Wildenschild Rising CO2 concentrations in the atmosphere (396 ppmv as of April 2012

Up-estuary extent and lithologic characteristics of tsunami deposits attributed to the 1700 Cascadia earthquake within Alsea Bay, OR

Creator:: Spruell, John T.
Abstract:: Cascadia’s 1700 earthquake generated a tsunami and widespread subsidence along Pacific Northwest coastline. The tsunami deposited sandy sediments in many Oregon coastal estuaries, such as Alsea Bay. Although the recurrence of subduction-generated megathrust earthquakes and tsunami events in this region are recorded in the stratigraphy, knowledge of the full inland...
Resource Type:: Undergraduate Thesis
Full Text:: Wadati-Benioff zone seismicity, Journal of Geophysical Research, 117, B09306, DOI: 10.1029/2012JB009407

Experiments into plasma physics

Creator:: Smith, Christopher S.
Abstract:: Our research was focused mainly on the field of plasma physics and the creation of plasmas in a laboratory environment. We first began our project with the goal to develop a tabletop Tokamak, a doughnut shaped device that magnetically confines plasmas at pressures greater than one atmosphere. After researching this...
Resource Type:: Honors College Thesis
Full Text:: : ____________________________________________________ Henri Jansen Abstract Our research was focused mainly on the field of plasma physics and

Practical Advances in Sediment Core Magnetic Susceptibility Data Logging for the Field and Laboratory

Creator:: Konyndyk, David M.
Abstract:: Magnetic susceptibility (MS) is a measure of a sample material's ability to be magnetized by an applied magnetic field. Applied to sedimentology, it provides us with a proxy indicator for the concentration of magnetizable minerals present at each depth. This knowledge, in conjunction with directional magnetic alignment data, climatic histories,...
Resource Type:: Poster
Full Text:: Magnetism Research Group, College of Earth, Ocean, and Atmospheric Sciences, 08/29/13 Introduction Magnetic

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