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Paleo-oceanography of the subtropical southeastern Pacific during late Quaternary : a study of radiolaria, opal and quartz contents of deep-sea sediments

Creator:: Molina-Cruz, Adolfo
Abstract:: Micropaleontological data have been analyzed through mathematical and statistical procedures, in order to: (1) establish the distribution pattern of radiolarian assemblages in the surface sediments, (2) establish the relationship of these assemblages with oceanographic variables, (3) determine the faunal composition down-core with respect to the faunal surface pattern, and (4)...
Resource Type:: Masters Thesis
Full Text:: o Molina - C ruz A THESIS submitted to Oregon State University in partial fulfillment of the

Model of late Pleistocene-Holocene variations in rate of sediment accumulation : Panama Basin, eastern equatorial Pacific

Creator:: Pisias, Nicklas G.
Abstract:: The assumption of constant quartz accumulation for the deep-sea sediment core Y69-106P, taken in the Panama Basin, has been used to date the core and construct a sedimentation rate versus time curve for it. Stratigraphic control for the calculated time scale includes three carbon-14 measurements, the extinction of the radiolarian...
Resource Type:: Masters Thesis

Zooplankton of the Galapagos Islands

Creator:: Figueroa, Diego
Abstract:: The marine climate of the Galapagos is spatially and seasonally heterogeneous. A taxonomically comprehensive study of Galapagos zooplankton has never been done. This study is an initial effort to establish the distribution and community structure of zooplankton in the Archipelago. I collected zooplankton samples by vertical tows over the Galapagos...
Resource Type:: Dissertation
Full Text:: mitochondrial gene cytochrome c oxidase subunit I (COI) and the nuclear internal transcribed spacer 1 (ITS1

Determination of unsaturation-, growth phase-, and growth rate-dependent hydrogen isotopic fractionation in C₃₇ alkenones produced by Emiliania huxleyi

Creator:: Wolhowe, Matthew D.
Abstract:: Recent works have investigated use of the hydrogen isotopic composition of C₃₇ alkenones (δD[subscript K37s]), lipid biomarkers of certain haptophyte microalgae, as an independent paleosalinity proxy. I discuss herein the factors impeding such an application and identify the potential alternative use of δD[subscript K37s] measurements as a proxy for non-thermal,...
Resource Type:: Masters Thesis
Full Text:: Alan C. Mix Recent works have investigated use of the hydrogen isotopic composition of C37

Abrupt deglacial climate changes in the North Pacific and implications for climate tipping points

Creator:: Praetorius, Summer Kate
Abstract:: Paleoclimate archives have revealed abrupt climate events that are superimposed on more gradual climate changes throughout the last glacial and deglacial periods. The underlying causes of such rapid climate changes are still poorly understood, but the strong expression of these events in northern hemisphere records likely points to climatic mechanisms...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Alan C. Mix Paleoclimate archives have revealed abrupt climate events that are

Non-biological uptake of zinc-65 from a marine algal nutrient medium

Creator:: Tomlinson, Richard Douglas
Abstract:: The nature and magnitude of experimental errors due to ⁶⁵Zn adsorption by inorganic surfaces was examined in a laboratory system designed to measure ⁶⁵Zn uptake by marine phytoplankton. In the pH range, 6.3±.1 to 7.5±.1, a precipitate formed in the algal nutrient medium selected for the system. To this seawater-base...
Resource Type:: Masters Thesis
Full Text:: possible. Dr. William C. Renfro, my major professor, provided invaluable advice and demonstrated

Early spring nutrient conditions of southeastern Alaska's Inside Passage

Creator:: Coughenower, D. Douglas
Abstract:: Observations were made of salinity, temperature, nitrate + nitrite, phosphate, silicate, total available nitrogen, and chlorophyll a in nine areas of the Alaskan Inside Passage during April of 1971. In general all properties indicated the water to be well mixed throughout this area. The conservative properties were particularly uniform. The...
Resource Type:: Masters Thesis
Full Text:: 0.3 m3/sec. and 16-50°C (Waring, 1965). 61 P 2C mNui CHATHAM STRAIT / 3o 20 CHATHAM STRAIT

The ecological significance of the diel periodicity of photosynthetic pigments in marine phytoplankton

Creator:: Glooschenko, Walter A.
Resource Type:: Dissertation
Full Text:: Herbert C. CuFl, Jr. The concentrations of the photosynthetic pigments, chlorophylla andc exhibit a diel

The Atlantic, the Amazon, and the Andes : neogene climate and tectonics viewed from Ceara Rise, western tropical Atlantic

Creator:: Harris, Sara E.
Resource Type:: Dissertation
Full Text:: approved: Alan C. Mix High resolution proxy estimates of western tropical Atlantic sediment composition

On dispersive continental shelf waves generated by alongshore variations in bottom topography

Creator:: Martell, C. Michael
Resource Type:: Masters Thesis
Full Text:: velocity VA is taken to be VAa ±1/2C, where C is the long wave phase speed. as dened U previously. This

ScholarsArchive@OSU

Paleo-oceanography of the subtropical southeastern Pacific during late Quaternary : a study of radiolaria, opal and quartz contents of deep-sea sediments

Model of late Pleistocene-Holocene variations in rate of sediment accumulation : Panama Basin, eastern equatorial Pacific

Zooplankton of the Galapagos Islands

Determination of unsaturation-, growth phase-, and growth rate-dependent hydrogen isotopic fractionation in C₃₇ alkenones produced by Emiliania huxleyi

Abrupt deglacial climate changes in the North Pacific and implications for climate tipping points

Non-biological uptake of zinc-65 from a marine algal nutrient medium

Early spring nutrient conditions of southeastern Alaska's Inside Passage

The ecological significance of the diel periodicity of photosynthetic pigments in marine phytoplankton

The Atlantic, the Amazon, and the Andes : neogene climate and tectonics viewed from Ceara Rise, western tropical Atlantic

On dispersive continental shelf waves generated by alongshore variations in bottom topography

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