Index Catalog // ScholarsArchive@OSU

Shear and convective turbulence in a model of thermohaline intrusions

Creator:: Mueller, Rachael
Abstract:: Thermohaline interleaving is an important mechanism for laterally fluxing salt, heat, and nutrients between oceanic water masses. Interleaving is driven by a release of potential energy resulting from the vastly differing diffusivities of heat and salt in seawater. The flows are composed of stacked intrusions that flux more buoyant and...
Resource Type:: Masters Thesis
Full Text:: Turbulence in a Model of Thermohaline Intrusions Abstract approved: William D. Smyth Thermohaline

Design, assessment, and future implications of the Multiple Enzyme Analyzer (MEA), a tool for in-situ monitoring of marine microbial activity

Creator:: Jaeger, Stephanie A.
Abstract:: The microbial loop plays a crucial role in remineralization of organic matter and fuels recycled production in the aquatic environment. The capability of microbes to utilize particular compounds can be examined through their ectoenzyme (found outside the cell) activities using fluorogenic substrate analogs. These catalysts hydrolyze polymers otherwise too large...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Stephanie A. Jaeger for the

Contribution of cold seep barite to the barium geochemical budget of a marginal basin

Creator:: McQuay, Erica L.
Abstract:: Large barite (BaSO4) structures mark cold seeps in the southern San Clemente Basin. Barium flux to San Clemente sediments is two to three times greater than fluxes measured in surrounding California Borderland basins. Analyses of sediment trap material, water column samples, sediments and pore water indicate that expected bariumbearing mineral...
Resource Type:: Masters Thesis
Full Text:: . Stephanie Jaeger and Jeff Krause are dear friends who have provided assistance, distraction, entertainment

Submarine plateau volcanism and Cretaceous Ocean Anoxic Event 1a : geochemical evidence from Aptian sedimentary sections

Creator:: Walczak, Paul S.
Abstract:: Marine sediments exceptionally rich in organic carbon, known as black shales, occur globally but intermittently in well correlated Cretaceous successions. The presence of black shales indicates that sporadic, ocean-wide interruption of normal respiration of marine organic matter during oxygen-deficient conditions has occurred. Submarine volcanism on a massive scale, related to...
Resource Type:: Masters Thesis

Impact of tropical instability waves on nutrient and chlorophyll distributions in the equatorial Pacific

Creator:: Evans, William Wiley
Abstract:: Tropical instability waves (TIWs) are prominent seasonal features in both the equatorial Pacific and Atlantic Oceans. This work quantifies their role in modulating the distributions of nutrients and phytoplankton biomass. Using an eight year record of biannual ship observations along the Tropical Atmosphere Ocean (TAO) buoy array, cruise sections crossing...
Resource Type:: Masters Thesis
Full Text:: William Wiley Evans IV for the degree of Master of Science in Oceanography presented on June 23, 2006

Sea surface water motion off Chile latitudes18°S-40°S, revealed from satellite images ofchlorophyll and temperature distribution

Creator:: Espinoza, Felix R.
Abstract:: The mesoscale sea-surface circulation pattern within 400 km off Chile and between 18°S and 40°S latitude is described using chlorophyll and temperature images from the Coastal Zone Color Scanner NIMBUS-7 satellite. The data base is a set of four mosaics developed from band-3 (550 nm) images taken on June 4...
Resource Type:: Masters Thesis
Full Text:: ana- lyzed, were generously provided by Dr. William Quinn, professor at Oregon State University. The

Distribution of Euphausiacea and Copepoda off Oregon in relation to oceanographic conditions

Creator:: Hebard, James Frank
Abstract:: Fifty-two one-meter plankton net samples from four stations off Newport, Oregon, were examined for composition and abundance of euphausiids and copepods. They provided data on dominance, species associations and environmental relationships. The euphausiid-copepod population off Oregon is composed of 12 numerically dominant species. These species occurred in most of the...
Resource Type:: Dissertation
Full Text:: Grossnicklaus ACKNOWLEDGEMENTS I wish to thank Dr. William G. Pearcy for his valuable assis- tance and

Food habits, dietary overlap and gastric evacuation rates of rockfishes (genus Sebastes)

Creator:: Brodeur, Richard D.
Abstract:: Euphausiids constituted the major food of five co-occuring species of rockfishes (Sebastes spp.). Copepods, decapods, cephalopods, amphipods, fishes and other pelagic prey were also consumed but were less important to the overall diet. Two species, S. flavidus and S. diploproa, were relatively euryphagous, utilizing a high number of prey taxa....
Resource Type:: Masters Thesis
Full Text:: , -- ( Dr. William Pearcy Euphausiids constituted the major food of five co-occuring spe- cies of

Dispersion of the Columbia River plume based on radioactivity measurements

Creator:: Frederick, Lawrence Churchill
Abstract:: An investigation has been made of several physical parameters of the effluent plume of the Columbia River as it enters the Pacific Ocean. Radioactive material in trace amounts enters the Columbia River from the Hanford nuclear reactors at Richland, Washington. One of these nuclides, chromium -51, has been used to...
Resource Type:: Dissertation
Full Text:: radionuclides. To Messrs. I. Lauren Larsen and William R. Vermeere for their aid in the gamma- ray spectrum

Variability in mesoscale circulation and its effects on zooplankton distribution in the Northern California Current

Creator:: Keister, Julie Eileen
Abstract:: In eastern boundary current upwelling ecosystems, mesoscale circulation features such as eddies and upwelling filaments play a prominent role in the transfer of water and the associated plankton from the productive nearshore to the oligotrophic deep sea. The relationship between mesoscale circulation, zooplankton distributions, and the across-shelf transport of coastal...
Resource Type:: Dissertation
Full Text:: : ____________________________________________________ Timothy J. Cowles, William T. Peterson In eastern

ScholarsArchive@OSU

Shear and convective turbulence in a model of thermohaline intrusions

Design, assessment, and future implications of the Multiple Enzyme Analyzer (MEA), a tool for in-situ monitoring of marine microbial activity

Contribution of cold seep barite to the barium geochemical budget of a marginal basin

Submarine plateau volcanism and Cretaceous Ocean Anoxic Event 1a : geochemical evidence from Aptian sedimentary sections

Impact of tropical instability waves on nutrient and chlorophyll distributions in the equatorial Pacific

Sea surface water motion off Chile latitudes18°S-40°S, revealed from satellite images ofchlorophyll and temperature distribution

Distribution of Euphausiacea and Copepoda off Oregon in relation to oceanographic conditions

Food habits, dietary overlap and gastric evacuation rates of rockfishes (genus Sebastes)

Dispersion of the Columbia River plume based on radioactivity measurements

Variability in mesoscale circulation and its effects on zooplankton distribution in the Northern California Current

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