Index Catalog // ScholarsArchive@OSU

Impacts of instream flows on the Colorado River Delta, Mexico : spatial vegetation change analysis and opportunities for restoration

Creator:: Zamora-Arroyo, Jose Francisco
Abstract:: Until the 1930s, flows of the Colorado River maintained approximately 781,060 hectares of wetlands in its delta. These wetlands provided important feeding and nesting grounds for resident and migratory birds as well as spawning and protection habitat for many fish and other invertebrate species. However, the Delta's wetlands started to...
Resource Type:: Dissertation

Irrigated agriculture as an indicator of socio-political stability in the Wadi el Far'a, West Bank

Creator:: Blankespoor, Brian
Abstract:: The Wadi el Far'a catchment is a tributary of the Jordan River located entirely the West Bank in the Middle East. Increasing population in the catchment, with economic development, is likely to increase water needs in this water region. In the water management of the region, agriculture is an essential...
Resource Type:: Capstone Project

Genesis of the El Salvador porphyry copper deposit, Chile and distribution of epithermal alteration at Lassen Peak, California

Creator:: Lee, Robert G. (Robert George)
Abstract:: The El Salvador porphyry copper deposit in the Indio Muerto district of northern Chile has been geologically investigated for more than 60 years and provides one of the best bases for understanding similar environments of ore formation elsewhere in the world. Fourteen new zircon U/Pb isotopic ages obtained via in...
Resource Type:: Dissertation

Past climate variability in southwestern Oregon and relationships with regional and hemispheric climate

Creator:: Ersek, Vasile
Abstract:: This dissertation presents the results of three studies that assessed climate variability on short and long timescales in western United States. The growth of carbonate formations in caves (speleothems) is used to infer the timing and amplitude of past climate variability. We first assess the controls on speleothem growth for...
Resource Type:: Dissertation

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

Transboundary groundwater : geopolitical consequences, commons sense, and the law of the hidden sea

Creator:: Jarvis, William Todd
Abstract:: With 97% of the world’s freshwater resources stored underground, the connection between groundwater resources to the metrics of space, scale and time common to the geographic study of natural resources has not been extensively investigated by geographers. While nearly 240 transboundary aquifers are mapped across the world, a potential “tragedy”...
Resource Type:: Dissertation

Change detection of land cover in a meadow landscape : the“Ranches” meadow, Silver Falls State Park, Oregon

Creator:: Anderson, Carl G.
Abstract:: From a landscape ecology perspective, meadows are often seen as landscapes in transition. Succession and change in meadows may be investigated by considering the physical and anthropogenic factors that influence the landscape through time. What is often unknown is how changes occur and how physical and anthropogenic factors contribute to...
Resource Type:: Capstone Project
Full Text:: S ec tio n 13 W ill am et te M er id ia n be tw ee n 19 61 a nd 1 99 0 So ur

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

Late Pleistocene and Holocene glacier and climate change

Creator:: Marcott, Shaun Andrew
Abstract:: This dissertation presents results from three studies that address major scientific questions in glacial geology and paleoclimatology for the late Pleistocene and Holocene using relatively new geochemical and statistical techniques. Each of the studies attempts to answer a longstanding question in the respective field using geochemical or statistical methods that...
Resource Type:: Dissertation

Magma dynamics and evolution in continental arcs : insights from the Central Andes

Creator:: Grocke, Stephanie B.
Abstract:: Constraining the magma evolution and dynamics that lead to the eruption of large volume continental arc systems is fundamental to our understanding of continental crust formation. An investigation into the magmagenesis that results in the formation of the Central Volcanic Zone (CVZ) in the Andes of South America, situated atop...
Resource Type:: Dissertation

ScholarsArchive@OSU

Impacts of instream flows on the Colorado River Delta, Mexico : spatial vegetation change analysis and opportunities for restoration

Irrigated agriculture as an indicator of socio-political stability in the Wadi el Far'a, West Bank

Genesis of the El Salvador porphyry copper deposit, Chile and distribution of epithermal alteration at Lassen Peak, California

Past climate variability in southwestern Oregon and relationships with regional and hemispheric climate

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

Transboundary groundwater : geopolitical consequences, commons sense, and the law of the hidden sea

Change detection of land cover in a meadow landscape : the“Ranches” meadow, Silver Falls State Park, Oregon

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

Late Pleistocene and Holocene glacier and climate change

Magma dynamics and evolution in continental arcs : insights from the Central Andes

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