Index Catalog // ScholarsArchive@OSU

RANS and LES predictions of turbulent scalar transport in dead zones of natural streams

Creator:: Drost, Kevin J.
Abstract:: Natural stream systems contain a variety of ﬂow geometries which contain ﬂow separation, turbulent shear layers, and recirculation zones. This work focuses on streams with dead zones. Characterized by slower ﬂow and recirculation, dead zones are naturally occurring cutouts in stream banks. These dead zones play an important role in...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Sourabh V. Apte Roy Haggerty Natural stream systems contain a variety of flow

Single and multiple rates of nonequilibrium diffusive mass transfer at the laboratory, field, and regional scales in the Culebra Member of the Rustler Formation, New Mexico

Creator:: Fleming, Sean W.
Resource Type:: Masters Thesis
Full Text:: Mexico. Abstract Approved: Roy Haggerty In the first phase of this study, data from eight

Hydrogeologic field investigation and groundwater flow model of the southern Willamette Valley, Oregon

Creator:: Craner, Jeremy D.
Abstract:: Elevated groundwater nitrate (NO3 -) concentrations in the Southern Willamette Valley (SWV) caused the Oregon Department of Environmental Quality (ODEQ) to declare a Groundwater Management Area (GWMA) in Spring, 2004. To better understand direction of groundwater flow, groundwater age, and nitrate transport pathways of the SWV we developed a steady-state...
Resource Type:: Masters Thesis
Full Text:: Southern Willamette Valley, Oregon. Abstract approved: Roy Haggerty Elevated

Changes in hyporheic exchange flow following experimental large wood removal in a second order, low gradient stream, Chichagof Island, AK

Creator:: La Nier, Justin
Abstract:: Hyporheic Exchange Flow (HEF) is driven by head gradients defined by the hydro-topography of the stream surface, which is controlled by the particular geomorphology of the stream. We quantified the impact of large wood, which typically exerts a strong control on stream morphology, on HEF in a second order, low...
Resource Type:: Masters Thesis
Full Text:: : ________________________________________________________________________ Roy D. Haggerty Hyporheic Exchange Flow (HEF) is driven by head gradients defined by the

Tracer experiments in a non-uniform porous medium : implications of diffusive mass transfer on the late-time breakthrough behavior

Creator:: Freiherr von Schwerin, Claudius
Abstract:: Mass transfer processes were evaluated in an artificial, non-uniform porous medium with a power law distribution of diffusion rate coefficients obtained from physical characterization of solute and porous medium. Breakthrough curves of several pulse experiments conducted at different velocities were compared (1) to analytical expressions for concentrations at mass transfer...
Resource Type:: Masters Thesis
Full Text:: : _______________________ _ Roy Haggerty Mass transfer processes were evaluated in an artificial, non-uniform porous

A preliminary assessment of hydrogeologic suitability for Aquifer Storage and Recovery (ASR) in Oregon

Creator:: Woody, Jen
Abstract:: An ASR metric and site rating index applied to over 120 municipal and agricultural locations across Oregon, combined with comparison to case study data from existing ASR sites, indicate that more than 50% of selected sites are hydrogeologically suitable for ASR. The ASR metric is a ratio of aquifer storage...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Dr. Roy Haggerty An ASR metric and site rating index applied to over 120

Using a single-well push-pull test to estimate mass transfer rate parameters

Creator:: Kelley, Michael John
Abstract:: More efficient methods are needed for the in-situ evaluation of mass transfer parameters which describe the movement of solutes through aquifer material. The objective of this study was to develop a method for estimating diffusion rate and capacity coefficients using a single-well, "push-pull" tracer test. The method consists of the...
Resource Type:: Masters Thesis
Full Text:: Transfer Parameters. Abstract approved: Roy D. Haggerty More efficient methods are needed for the in

The Vadose Zone as a Hyporheic Carbon Source : A Look at Temporal Trends in Hyporheic Zone pCO₂

Creator:: Brandes, Jason B.
Abstract:: Stream chemistry studies conducted in the forested Watershed 1 of the HJ Andrews Experimental Forest show a contribution of CO2 from the hyporheic zone. Hyporheic CO₂ concentrations, measured as pCO₂, have a seasonal trend as well as a responsiveness to storm events. Concentrations are highest at the end of the...
Resource Type:: Masters Thesis
Full Text:: Hyporheic Carbon Source: A Look at Temporal Trends in Hyporheic Zone pCO2 Abstract Approved: Roy

Temporal and spatial variability of groundwater nitrate in the southern Willamette Valley of Oregon

Creator:: Mutti, Jeffrey Glenn
Abstract:: Groundwater nitrate contamination is a well-documented issue in the Southern Willamette Valley (SWV) of Oregon, as a Groundwater Management Area (GWMA) has recently been declared. As a GWMA, groundwater nitrate monitoring must occur until regional concentrations are below 7 mg/L NO3-N. However, the presence of temporal variability can make it...
Resource Type:: Masters Thesis
Full Text:: Oregon Abstract approved: Roy D. Haggerty Groundwater nitrate contamination is a well

Structural Results and Approximation Algorithms in Minor-free Graphs

Creator:: Le, Hung V.
Abstract:: Planarity has been successfully exploited to design faster and more accurate approximation algorithms for many graph optimization problems. The celebrated theorem of Kuratowski completely characterizes planar graphs as those excluding K_5 and K_{3,3} as minors. Kuratowski's theorem allows one to generalize planar graphs to H-minor-free graphs: those that exclude a...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Hung Le for the

ScholarsArchive@OSU

RANS and LES predictions of turbulent scalar transport in dead zones of natural streams

Single and multiple rates of nonequilibrium diffusive mass transfer at the laboratory, field, and regional scales in the Culebra Member of the Rustler Formation, New Mexico

Hydrogeologic field investigation and groundwater flow model of the southern Willamette Valley, Oregon

Changes in hyporheic exchange flow following experimental large wood removal in a second order, low gradient stream, Chichagof Island, AK

Tracer experiments in a non-uniform porous medium : implications of diffusive mass transfer on the late-time breakthrough behavior

A preliminary assessment of hydrogeologic suitability for Aquifer Storage and Recovery (ASR) in Oregon

Using a single-well push-pull test to estimate mass transfer rate parameters

The Vadose Zone as a Hyporheic Carbon Source : A Look at Temporal Trends in Hyporheic Zone pCO₂

Temporal and spatial variability of groundwater nitrate in the southern Willamette Valley of Oregon

Structural Results and Approximation Algorithms in Minor-free Graphs

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