Index Catalog // ScholarsArchive@OSU

Interacting effects of climate, forest dynamics, landforms, and river regulation on streamflow trends since 1950 : examples from the Willamette Basin and forested headwater sites in the US

Creator:: Hatcher, Kendra L.
Abstract:: Streamflow patterns are a result of the interaction of many factors, including climate, vegetation, geology, and topography. Analyses indicate that streamflow patterns have changed around the United States over the past century, raising questions about the possible role of climate variability as a driver of water yield. This thesis examines...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Julia A. Jones Streamflow patterns are a result of the interaction of many factors

Assessing the design of international water supply and hydropower arrangements for managing certain climate change scenarios

Creator:: Zentner, Matthew A.
Abstract:: Increased variability of rainfall and flow from climate change has the potential to stress existing transboundary water sharing agreements and make meeting the needs of all riparians difficult. Water treaties have been theorized as valuable tools for mitigating conflict in times of climate stress, but the relationship between the design...
Resource Type:: Dissertation
Full Text:: Matthew A. Zentner for the degree of Doctor of Philosophy in Geography presented on November 17, 2010

Labile dissolved organic carbon supply limits hyporheic denitrification

Creator:: Zarnetske, Jay P., Haggerty, Roy, Wondzell, Steven M., and Baker, Michelle A.
Abstract:: We used an in situ steady state ¹⁵N-labeled nitrate (¹⁵NO₃⁻) and acetate (AcO⁻) well-to-wells injection experiment to determine how the availability of labile dissolved organic carbon (DOC) as AcO⁻ influences microbial denitrification in the hyporheic zone of an upland (third-order) agricultural stream. The experimental wells receiving conservative (Cl⁻ and Br)...
Resource Type:: Article
Full Text:: . Zarnetske,1,2 Roy Haggerty,3 Steven M. Wondzell,4 and Michelle A. Baker5 Received 4 April 2011; revised 11

Simulating past, present, and future changes in ENSO : a model evaluation and data-model comparison

Creator:: Alder, Jay R.
Abstract:: This thesis presents the results of a formal evaluation of a new AOGCM, GENMOM, demonstrating its ability to simulate present-day climate and ENSO dynamics. The model is applied to simulate climate for the Last Glacial Maximum, deglacial, and Holocene time periods. The model output is evaluated against the best available...
Resource Type:: Dissertation
Full Text:: March 7, 2011. Title: Simulating Past, Present, and Future Changes in ENSO: a Model Evaluation and

The use of surface energy balance models as a means to quantify changes in glacier mass balance : an application to the Collier Glacier

Creator:: Beedlow, Andrew Cody
Abstract:: This thesis presents the results of an investigation into the measured and modeled mass balance of the Collier Glacier, a small (0.70 km²), valley glacier located in the Oregon Cascade Range (44° 10' N, 121° 47' W). Here we present mass-balance measurements conducted for the 2009 and 2010 balance years...
Resource Type:: Masters Thesis
Full Text:: -term records constitute a biased sample of the world’s small glaciers (Meier, 1984). Thus, as our

Present-day and future contributions of glacier runoff to summertime flows in a Pacific Northwest watershed: Implications for water resources

Creator:: Nolin, Anne W., Phillippe, Jeff, Jefferson, Anne, and Lewis, Sarah L.
Abstract:: While the impacts of long-term climate change trends on glacier hydrology have received much attention, little has been done to quantify direct glacier runoff contributions to streamflow. This paper presents an approach for determining glacier runoff contributions to streamflow and estimating the effects of increased temperature and decreased glacier area...
Resource Type:: Article
Full Text:: runoff to summertime flows in a Pacific Northwest watershed: Implications for water resources Anne W

Timescales of large silicic magma systems : implications from accessory minerals in Pleistocene lavas of the Altiplano-Puna Volcanic Complex, central Andes

Creator:: Tierney, Casey R.
Abstract:: Constraining the development, evolution, and timescales of large silicic magma systems is important to understanding the development of granite batholiths, the relationships between volcanoes and their plutonic underpinnings, and the development of the continental crust. The ignimbrite flare up that produced the Altiplano-Puna Volcanic Complex of the Central Andes is...
Resource Type:: Masters Thesis
Full Text:: characterized by episodic volcanism over a ~11 Ma time-span that climaxed about 4 Ma. Since peak activity, the

The origin of mid-ocean ridge basalts : insights from trace element contents in anorthite, anorthite-hosted melt inclusions, and ocean core complexes

Creator:: Weinsteiger, Allison B.
Abstract:: The primary goal of this study is to access the processes that alter primary melts after segregation from a mantle source and ultimately form petrologic Layers 2 and 3 of the Ocean Crust. Mineral, melt inclusion, and whole rock chemical compositions are utilized to further the understanding of 1) the...
Resource Type:: Dissertation
Full Text:: the processes that alter primary melts after segregation from a mantle source and ultimately form

Seismicity at the Cascadia plate boundary beneath the Oregon continental shelf

Creator:: Williams, Mark Charles
Abstract:: Since 2003, 39 small earthquakes have been detected offshore central Oregon in the nominally locked part of the Cascadia subduction zone, where very little seis- mic activity has been recorded in spite of a paleo-seismic record of great subduction events. Although the regional earthquake bulletin reports depths of 29 and...
Resource Type:: Masters Thesis
Full Text:: Cascadia subduction zone, where very little seis- mic activity has been recorded in spite of a paleo

The changing glaciers of Mt. Hood, Oregon and Mt. Rainier, Washington : implications for periglacial debris flows

Creator:: Ellinger, Jonathan R.
Abstract:: Mountain glaciers are receding worldwide with numerous consequences including changing hydrology and geomorphology. This study focuses on changes in glacier area on Mt. Hood, Oregon and Mt. Rainier, Washington where damaging debris flows have occurred in glaciated basins. Landsat imagery is used to map debris-free ice on a decadal time...
Resource Type:: Masters Thesis
Full Text:: debris-free ice on a decadal time scale from 1987 to 2005. Debris-free glacier ice is clearly

ScholarsArchive@OSU

Interacting effects of climate, forest dynamics, landforms, and river regulation on streamflow trends since 1950 : examples from the Willamette Basin and forested headwater sites in the US

Assessing the design of international water supply and hydropower arrangements for managing certain climate change scenarios

Labile dissolved organic carbon supply limits hyporheic denitrification

Simulating past, present, and future changes in ENSO : a model evaluation and data-model comparison

The use of surface energy balance models as a means to quantify changes in glacier mass balance : an application to the Collier Glacier

Present-day and future contributions of glacier runoff to summertime flows in a Pacific Northwest watershed: Implications for water resources

Timescales of large silicic magma systems : implications from accessory minerals in Pleistocene lavas of the Altiplano-Puna Volcanic Complex, central Andes

The origin of mid-ocean ridge basalts : insights from trace element contents in anorthite, anorthite-hosted melt inclusions, and ocean core complexes

Seismicity at the Cascadia plate boundary beneath the Oregon continental shelf

The changing glaciers of Mt. Hood, Oregon and Mt. Rainier, Washington : implications for periglacial debris flows

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