Index Catalog // ScholarsArchive@OSU

Interpreting Climate of the Past from High-Resolution Ice Core Records of Methane

Creator:: Lee, James E.
Abstract:: Methane is a product of biogeochemical processes which respond to changes in climate. The history of atmospheric methane is recorded by ice cores providing insight into past changes in these biogeochemical processes. This dissertation is comprised of three studies which focus on centennial- and millenial-scale variability of methane from ice...
Resource Type:: Dissertation
Full Text:: approved: Edward J. Brook Methane is a product of biogeochemical processes which respond to changes in

Stable Isotope Constraints on Carbon Dioxide and Nitrous Oxide Variations at the Onset of the Last Glacial Period: New Ice Cores from Taylor Glacier, Antarctica

Creator:: Menking, James A.
Abstract:: New ice cores retrieved from the Taylor Glacier (Antarctica) blue ice area contain ice and air spanning the Marine Isotope Stage (MIS) 5/4 transition, a period of global cooling and ice sheet expansion. Chronologies were determined for the ice and air bubbles in the new ice cores by visually matching...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Edward J. Brook New ice cores retrieved from the Taylor Glacier (Antarctica) blue ice

The late holocene atmospheric methane budget reconstructed from ice cores

Creator:: Mitchell, Logan E.
Abstract:: Ice cores are considered the gold standard for recording past climate and biogeochemical changes. However, gas records derived from ice core analysis have until now been largely limited to centennial and longer timescales because sufficient temporal resolution and analytical precision have been lacking, except during rare times when atmospheric concentrations...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Edward J. Brook Ice cores are considered the gold standard for recording past climate and

Understanding Signals of the South Pole Ice Core: Chronology, Climate, and Firn Processes

Creator:: Epifanio, Jenna A.
Abstract:: The South Pole ice core (SPC14), drilled in the field seasons of 2014/2015 and 2015/2016, is an intermediate length, 1,751-m ice core which preserves a 54,000-year record of past climate and atmospheric composition. The SPC14 ice core adds to the spatial grid of ice cores in Antarctica extending into the...
Resource Type:: Dissertation
Full Text:: , and Firn Processes Abstract approved: Edward J. Brook The South Pole ice core (SPC14), drilled in

Carbon cycle variability during the last millennium and last deglaciation

Creator:: Bauska, Thomas K.
Abstract:: The exchange of carbon on earth is one of the fundamental processes that sustains life and regulates climate. Since the onset of the Industrial Revolution, the burning of fossil fuels and anthropogenic land conversion have altered the carbon cycle, increasing carbon dioxide in the atmosphere to levels that are unprecedented...
Resource Type:: Dissertation
Full Text:: Deglaciation Abstract approved: ____________________________________________________ Edward J

Spatial and Temporal Dynamics of Broad-scale Predictive Models : Influences of Scale

Creator:: Hooper, Samuel
Abstract:: Developing accurate predictive distribution models requires adequately representing relevant spatial and temporal scales, as these scales are ultimately reflective of the relationships between distributions and influential environmental conditions. In this research, we considered both spatial and temporal scale and the influence each has on predicting broad-scale distributions of two disparate...
Resource Type:: Masters Thesis
Full Text:: time. Doug Robinson provided invaluable counsel on bird ecology and creative ways to address the

Absolute water velocity profiles from glider-mounted acoustic doppler current profilers

Creator:: Ordonez, Christopher Edward
Abstract:: This paper details a method to compute absolute water velocity profiles from glider-based acoustic Doppler current profiler (ADCP) measurements based on the "shear method" developed for lowered ADCPs. The instrument is a 614-kHz Teledyne RDI ADCP integrated into the body of a Teledyne Webb Research Slocum Glider. Shear is calculated...
Resource Type:: Masters Thesis
Full Text:: ________________________________________________________________________ AN ABSTRACT OF THE THESIS OF Christopher Edward Ordonez for the degree of Master of

Diversity, Generalization, and Specialization in Plant-Pollinator Networks of Montane Meadows, Western Cascades, Oregon

Creator:: Helderop, Edward
Abstract:: Despite the importance of plant-pollinator interactions for ecological communities, few long-term observational studies have been conducted of plant-pollinator networks. Using four years of plant-pollinator interaction data from 18 meadows in the Willamette National Forest, Oregon, this thesis examined how meadow size, the amount of nearby meadow habitat, weather, degree days,...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Edward Helderop for the

Investigation of Deep Seismic Reflections Beneath the Forearc in the South Central Chile Subduction Zone

Creator:: Zhang, Edward
Abstract:: The south central Chilean margin is one of the most seismically active subduction zones on Earth, generating some of the largest earthquakes on the planet, including the largest ever recorded in 1960 near Valdivia, Chile (Mw 9.5). Using the 15 km streamer and 6600 in3 tuned seismic airgun array aboard...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Edward Zhang for the

Implementation of a gross anatomical maturity key for the study of spawning phenology and geography of Pacific cod (Gadus macrocephalus)

Creator:: Neidetcher, Sandra
Abstract:: Pacific cod (Gadus macrocephalus) is an important species, both economically and ecologically in the Bering Sea and Aleutian Islands (BSAI). However, little is known about its spawning dynamics. To address this knowledge gap, I developed a gross anatomical maturity key for Pacific cod to assess temporal and spatial patterns of...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Interpreting Climate of the Past from High-Resolution Ice Core Records of Methane

Stable Isotope Constraints on Carbon Dioxide and Nitrous Oxide Variations at the Onset of the Last Glacial Period: New Ice Cores from Taylor Glacier, Antarctica

The late holocene atmospheric methane budget reconstructed from ice cores

Understanding Signals of the South Pole Ice Core: Chronology, Climate, and Firn Processes

Carbon cycle variability during the last millennium and last deglaciation

Spatial and Temporal Dynamics of Broad-scale Predictive Models : Influences of Scale

Absolute water velocity profiles from glider-mounted acoustic doppler current profilers

Diversity, Generalization, and Specialization in Plant-Pollinator Networks of Montane Meadows, Western Cascades, Oregon

Investigation of Deep Seismic Reflections Beneath the Forearc in the South Central Chile Subduction Zone

Implementation of a gross anatomical maturity key for the study of spawning phenology and geography of Pacific cod (Gadus macrocephalus)

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