Index Catalog // ScholarsArchive@OSU

Impact of Dansgaard-Oeschger and Heinrich Events on the Latitudinal Distribution of Methane Sources during Marine Isotope Stage 3

Creator:: Edwards, Jon S.
Abstract:: Understanding how the latitudinal distribution of methane sources changed between stadial and interstadial climate states during the last glacial period can provide important clues about how terrestrial hydroclimate and ecosystems evolved between these different states. The punctuation of the millennial-scale structure by Heinrich events is also of interest in this...
Resource Type:: Masters Thesis
Full Text:: intercept of (1) discrete_CH4 = 0.975xCFA_CH4 + 12.99 (r 2 = 0.9966,P < .05) and (2) discrete_CH4

A study on the effects of enhanced pCO2 on open ocean diazotrophic assemblages

Creator:: Gradoville, Mary Rose
Abstract:: Biological di-nitrogen (N₂) fixation is a key process in open-ocean ecosystems, where the new nitrogen (N) provided by marine diazotrophs can support a large fraction of primary productivity and carbon (C) drawdown. Recent laboratory studies have shown that elevated pCO₂ enhances the rate of N₂ fixation by select laboratory isolates...
Resource Type:: Masters Thesis
Full Text:: . This response was not affected by amending seawater with P or Fe or by changing the light levels of

The Deep Sea and Me: A Design-Based Research Study to Advance Public Literacy of the Deep Sea Using an Exhibit at a Public Marine Science Center

Creator:: Darr, Katherine D.
Abstract:: With growing populations and consumer demand, there has been a turn to the deep sea to meet our natural resource needs. The deep sea provides a range of benefits to humans—called ecosystem services—including carbon sequestration, fisheries, waste absorption and detoxification, and nutrient cycling, all of which are vital to life...
Resource Type:: Masters Thesis
Full Text:: combined (* indicates significance at p<.05) ...................................................... 27

The Deep Sea and Me : using a science center exhibit to promote lasting public literacy and elucidate public perception of the deep sea

Creator:: Darr, Katherine D., East, Jennifer L., Seabrook, Sarah, Dundas, Steven J., and Thurber, Andrew R.
Abstract:: A critical barrier to effective management of deep-sea resources is a lack of understanding by society of the benefits received from the oceans. To address this knowledge gap, we applied an iterative design-based research methodology to evaluate (1) how to effectively use an exhibit to increase public literacy of the...
Resource Type:: Article
Full Text:: , star indicates significance at *p< 0.05 and **p < 0.001. Phase 1 (n = 50): Baseline participants did

Effect of forecast skill on management of the Oregon coast coho salmon (Oncorhynchus kisutch) fishery

Creator:: Rupp, David E., Wainwright, Thomas C., and Lawson, Peter W.
Abstract:: Better fisheries management is often given as one justification for research on improving forecasts of fish survival. However, the value gained from expected improvements in forecast skill in terms of achieving management goals is rarely quantified as part of research objectives. Using Monte Carlo simulations of population dynamics, we assessed...
Resource Type:: Article
Full Text:: _M (deviation from the mean) was modeled as an autoregressive (AR) proc- ess of order p to capture

Connecting Tidal-fluvial Life Histories to Survival of McKenzie River Spring Chinook Salmon (Oncorhynchus tshawytscha)

Creator:: Rose, Gordon W.
Abstract:: Chinook salmon returns to the Columbia River basin have declined due to impacts of a growing human population, despite significant mitigation expenditures. Consequently, fisheries managers have become focused on recovery and long-term viability of at-risk populations. A viable population depends, in part, on the connectivity and quality of diverse habitat...
Resource Type:: Masters Thesis
Full Text:: estuary (Oregon). Estuarine, Coastal and Shelf Science 64:79–93. Bottom, D. L., B. E. Riddell, and J

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:: encouragement from all the ice core folks. Jon Edwards, Andy Menking, Mike Kalk, Ben Eli-Riddell Young, Nick

Anomalous porosity preservation and preferential accumulation of gas hydrate in the Andaman accretionary wedge, NGHP-01 site 17A

Creator:: Rose, Kelly K., Johnson, Joel E., Torres, Marta E., Hong, Wei-Li, Giosan, Liviu, Solomon, Evan A., Kastner, Miriam, Cawthern, Thomas, Long, Philip E., and Schaef, H. Todd
Abstract:: In addition to well established properties that control the presence or absence of the hydrate stability zone, such as pressure, temperature, and salinity, additional parameters appear to influence the concentration of gas hydrate in host sediments. The stratigraphic record at Site 17A in the Andaman Sea, eastern Indian Ocean, illustrates...
Resource Type:: Article
Full Text:: . SEM Sed sample type SEM sample ID Depth (mbsf) Ash thickness (cm) Hydrate conc (%) U&P 2nd Carbonate

Pillaging Bloodwood: An Exploratory Examination of Illegal Deforestation in Guinea-Bissau Through Forest Disturbance Algorithms and Unsupervised Clustering Techniques

Creator:: Walters, Alexander E.
Abstract:: Environmental crime around the world, such as trafficking in illegal timber, is directly related to political instability. Traffickers exploit weak, fragile, and chaotic political circumstances to illegally extract high-value commodities, challenging the extent to which conservation goals are achievable in resource rich developing countries. Rosewood is the largest traded endangered...
Resource Type:: Masters Thesis
Full Text:: a school, thank you. 1 | P a g e 1. Chapter 1: Introduction

Signatures in the Subsurface - Big & Small Data Approaches for the Spatio-Temporal Analysis of Geologic Properties & Uncertainty Reduction

Creator:: Rose, Kelly Kathleen
Abstract:: Despite more than two centuries of exploration, including more than six million deep wellbores with depths exceeding 40,000 feet in some parts of the world, our ability to constrain subsurface processes and properties remains limited. Characteristics of the subsurface vary and can be analyzed on a variety of spatial scales....
Resource Type:: Dissertation
Full Text:: Audrey Oldenkamp for assistance with SEM sample preparation and analyses, and Jennifer Bauer for

ScholarsArchive@OSU

Impact of Dansgaard-Oeschger and Heinrich Events on the Latitudinal Distribution of Methane Sources during Marine Isotope Stage 3

A study on the effects of enhanced pCO2 on open ocean diazotrophic assemblages

The Deep Sea and Me: A Design-Based Research Study to Advance Public Literacy of the Deep Sea Using an Exhibit at a Public Marine Science Center

The Deep Sea and Me : using a science center exhibit to promote lasting public literacy and elucidate public perception of the deep sea

Effect of forecast skill on management of the Oregon coast coho salmon (Oncorhynchus kisutch) fishery

Connecting Tidal-fluvial Life Histories to Survival of McKenzie River Spring Chinook Salmon (Oncorhynchus tshawytscha)

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

Anomalous porosity preservation and preferential accumulation of gas hydrate in the Andaman accretionary wedge, NGHP-01 site 17A

Pillaging Bloodwood: An Exploratory Examination of Illegal Deforestation in Guinea-Bissau Through Forest Disturbance Algorithms and Unsupervised Clustering Techniques

Signatures in the Subsurface - Big & Small Data Approaches for the Spatio-Temporal Analysis of Geologic Properties & Uncertainty Reduction

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Conference Name

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search