Index Catalog // ScholarsArchive@OSU

Understanding Molybdenum Isotope Dynamics in Terrestrial Environments

Creator:: King, Elizabeth K.
Abstract:: This dissertation works towards determining the mechanisms driving the Mo isotopic composition of soils, and how these signals may be used to refine the use of Mo as a proxy of biogeochemical processes. The first step towards quantifying Mo fractionation in soils is to determine the mechanisms controlling Mo accumulation,...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________ Julie C. Pett-Ridge This dissertation works towards determining the mechanisms driving

Concentration-Runoff Relationships of Contrasting Small Mountainous Rivers in the Pacific Northwest, USA: Insights into the Weathering of Rhenium

Creator:: Ghazi, Layla
Abstract:: This study examines dissolved rhenium (Re) as a function of water runoff using river samples from two contrasting watersheds, the Eel and Umpqua Rivers in the Pacific Northwest, USA. These watersheds share many key characteristics in terms of size, discharge, climate, and vegetation, but they have a 10-fold difference in...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Julie Pett-Ridge This study examines dissolved rhenium (Re) as a function of water

Beyond Cooperation : Environmental Justice in Transboundary Water Management

Creator:: Watson, Julie Elkins
Abstract:: Since the Wolf, Yoffe, and Giordano 2003 Basins at Risk study, examining human interactions with transboundary water resources through a lens of conflict and cooperation has been a dominant paradigm. The Basins at Risk (BAR) method involves categorizing events on a scale from most conflictive (e.g. war or extensive casualties)...
Resource Type:: Dissertation
Full Text:: : Environmental Justice in Transboundary Water Management by Julie Elkins Watson A DISSERTATION

Influence of a Sedimentary Source of Nd on Deep Ocean εNd Distributions

Creator:: Abbott, April N.
Abstract:: Ocean circulation is an important component in Earth's climate system. Predicting future climate and circulation changes requires an improved understanding of the past relationship between climate and ocean currents. The neodymium isotope composition (εNd) of water masses is frequently used as a quasi-conservative tracer to reconstruct ocean circulation. The current...
Resource Type:: Dissertation

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
Full Text:: . Title: Mitigating Microplastics: Development and Evaluation of a Middle School Curriculum

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
Full Text:: Rotating disc electrodes (RDEs) exploit the induced flushing of a radially spun electrode to increase the

Seasonal hydrologic responses to climate change in the Pacific Northwest

Creator:: Vano, Julie A., Nijssen, Bart, and Lettenmaier, Dennis P.
Abstract:: Increased temperatures and changes in precipitation will result in fundamental changes in the seasonal distribution of streamflow in the Pacific Northwest and will have serious implications for water resources management. To better understand local impacts of regional climate change, we conducted model experiments to determine hydrologic sensitivities of annual, seasonal,...
Resource Type:: Article

Soil organic matter regulates molybdenum storage and mobility in forests

Creator:: Marks, Jade A., Perakis, Steven S., King, Elizabeth K., and Pett-Ridge, Julie
Abstract:: The trace element molybdenum (Mo) is essential to a suite of nitrogen (N) cycling processes in ecosystems, but there is limited information on its distribution within soils and relationship to plant and bedrock pools. We examined soil, bedrock, and plant Mo variation across 24 forests spanning wide soil pH gradients...
Resource Type:: Article

Evaluating Spatial Patterns of Heavy Metal Levels and Pb Isotopic Compositions of Peat Soils along the Red Dog Mine Haul Road in Northwest Alaska

Creator:: Melby, Kali M.
Abstract:: This study evaluates ore transport and other mining activities on metal levels in the remote Arctic ecosystem of Cape Krusenstern National Monument (CAKR) in northwestern Alaska. This monument is 50 km SW of Red Dog Mine, one of the world’s largest Pb–Zn mines. The Delong Mountain Transportation System (DMTS) haul...
Resource Type:: Masters Thesis
Full Text:: 1000 m. Lead isotope ratios indicate a linear trend such that there are two dominant sources of

A petrogenetic model for the Caribbean large igneous province

Creator:: Krawl, Kyle A.
Abstract:: The Caribbean Plateau is an oceanic large igneous province (CLIP). A widely accepted model for LIP petrogenesis proposes that these large bodies of igneous rock are formed by decompression melting associated with upwelling mantle plume heads during the initiation of hotspot activity. According to this classical model, petrogenesis occurs over...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF Kyle A. Krawl for the degree of Master of Science in Ocean, Earth and

ScholarsArchive@OSU

Understanding Molybdenum Isotope Dynamics in Terrestrial Environments

Concentration-Runoff Relationships of Contrasting Small Mountainous Rivers in the Pacific Northwest, USA: Insights into the Weathering of Rhenium

Beyond Cooperation : Environmental Justice in Transboundary Water Management

Influence of a Sedimentary Source of Nd on Deep Ocean εNd Distributions

Mitigating Microplastics : Development and Evaluation of a Middle School Curriculum

Investigating rotating microelectrodes for rapid in situ detection of oxygen

Seasonal hydrologic responses to climate change in the Pacific Northwest

Soil organic matter regulates molybdenum storage and mobility in forests

Evaluating Spatial Patterns of Heavy Metal Levels and Pb Isotopic Compositions of Peat Soils along the Red Dog Mine Haul Road in Northwest Alaska

A petrogenetic model for the Caribbean large igneous province

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