Index Catalog // ScholarsArchive@OSU

Zeolite packed biologically active filter (biofilter) to reduce odorous emissions from a confined swine building

Creator:: Stoeckinger, Andrew J.
Abstract:: A zeolite packed biofilter was retrofitted to a confined swine feeding operation in Eastern Washington, and evaluated for its ability to reduce the malodors from fan exhaust drawn from an internal under-slat manure storage pit. Ammonia (NH₃) was used as the representative constituent of swine waste malodor due to its...
Resource Type:: Masters Thesis

Forensic Hydrogeography : Assessing Groundwater Arsenic Concentrations and Testing Methods within the Harney Basin, Oregon

Creator:: Smitherman, Lauren L.
Abstract:: Harney County contains defining characteristics of regions containing arsenic within the groundwater such as its location in the western United States, unique closed basin geography, complex geology, and seasonal groundwater level fluctuations. Confirmation of arsenic concentrations above the Maximum Contaminant Level Drinking Water Standard of 10 μg/L has been observed...
Resource Type:: Masters Thesis
Full Text:: members Dr. Molly Kile, Dr. Roy Haggerty, and my graduate committee representative Dr. Tracy Arras

Geomorphic controls on hyporheic exchange flow in mountain streams

Creator:: Kasahara, Tamao
Abstract:: Simulations of stream-subsurface water exchange (hyporheic exchange) using a three-dimensional steady state groundwater flow model and a particle tracking model in unconstrained and constrained reaches of small (2nd-order) and intermediate (5th-order) mountain streams were conducted to estimate the effects of geomorphic features on the extent, volume and residence time of...
Resource Type:: Masters Thesis
Full Text:: Oregon State University. Dr. Roy Haggerty, who is a committee member, was a critical supporter for the

Drop it like it’s Hot : Combining DTS and Temperature Modeling to Evaluate Stream Restoration on the Middle Fork of the John Day River

Creator:: Hall, Austin
Abstract:: Temperature is a key factor for salmonid health and is an important restoration metric on the Middle Fork of the John Day River in northeast Oregon. In the past century, dredge mining, deforestation, and overgrazing have degraded stream habitat and resulted in greater daytime stream temperatures in the region. Recent...
Resource Type:: Masters Thesis

Effect of salinity on particle release and hydraulic conductivity in sediments

Creator:: Blume, Theresa
Abstract:: Fine particles and colloids, attached to grain surfaces, are abundant in the earth's subsurface. Under certain conditions these particles can be released from the matrix and transported with the mobile phase. One of the mechanisms for sudden particle release is a decrease in groundwater salt concentration below the critical salt...
Resource Type:: Masters Thesis

Chemical and isotopic patterns of nitrate variability in the southern Willamette Valley, Oregon

Creator:: Vick, Christopher Flanders
Abstract:: A relatively stable, persistent and historical problem with elevated NO₃⁻ concentrations in rural drinking wells in the southern Willamette Valley, Oregon is evident. What is the origin of NO₃⁻ in rural drinking water wells in this area? The answer to the question is not simple. Many non-point sources contribute to...
Resource Type:: Masters Thesis

Spatial and temporal trends in bed material and channel morphology below a hydroelectric dam complex, Deschutes River, Oregon

Creator:: McClure, Ellen M.
Abstract:: River regulation imposes changes in the supply of sediment and the frequency of competent flows. As a result, impounded rivers often exhibit downstream changes in channel processes, particle size, and morphology. The magnitude of change in competent flow frequency and sediment load together can be used to predict the pattern...
Resource Type:: Masters Thesis

Carbon dynamics in the hyporheic zone of a headwater mountain stream in the Cascade Mountains, Oregon

Creator:: Corson-Rikert, Hayley A.
Abstract:: This study investigated carbon dynamics in the hyporheic zone of a steep, forested catchment in the Cascade Mountains of western Oregon, USA. Water samples were collected monthly from a headwater stream and well network during baseflow conditions from July to December 2013 and again in March 2014. We also sampled...
Resource Type:: Masters Thesis
Full Text:: we met. Thank you to Roy Haggerty for taking the time on numerous occasions to discuss my data, for

Dynamics of the Laurentide Ice Sheet

Creator:: Carlson, Anders Eskil
Abstract:: This dissertation concentrates on the controlling factors on the instability of the Laurentide Ice Sheet (LIS) and their effects on abrupt climate change. Northern Hemisphere climate fluctuated abruptly during the last deglaciation possibly related to variability in Atlantic meridional overturning circulation (AMOC) and reduced aerial extent of the LIS. Reductions...
Resource Type:: Dissertation
Full Text:: interest, support and constructive criticism: Roy Haggerty, Andrew Meigs, Alan Mix, and Herbert

Infiltration and temperature characterization of a wastewater hyporheic discharge system

Creator:: Stewart, Ryan D.
Abstract:: The Clean Water Act imposes Total Maximum Daily Load (TMDL) limits on pollutant concentrations within wastewater effluent; in Oregon, thermal discharge is one of the pollutants subject to regulation. The City of Woodburn, Oregon, funded a series of pilot scale studies to investigate the utility of natural systems to reduce...
Resource Type:: Masters Thesis
Full Text:: project. I would also like to thank my other committee members, Professors Roy Haggerty, John Bolte

ScholarsArchive@OSU

Zeolite packed biologically active filter (biofilter) to reduce odorous emissions from a confined swine building

Forensic Hydrogeography : Assessing Groundwater Arsenic Concentrations and Testing Methods within the Harney Basin, Oregon

Geomorphic controls on hyporheic exchange flow in mountain streams

Drop it like it’s Hot : Combining DTS and Temperature Modeling to Evaluate Stream Restoration on the Middle Fork of the John Day River

Effect of salinity on particle release and hydraulic conductivity in sediments

Chemical and isotopic patterns of nitrate variability in the southern Willamette Valley, Oregon

Spatial and temporal trends in bed material and channel morphology below a hydroelectric dam complex, Deschutes River, Oregon

Carbon dynamics in the hyporheic zone of a headwater mountain stream in the Cascade Mountains, Oregon

Dynamics of the Laurentide Ice Sheet

Infiltration and temperature characterization of a wastewater hyporheic discharge system

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