Index Catalog // ScholarsArchive@OSU

Sea-air CO₂ flux variability on the northeast Pacific continental margin

Creator:: Evans, Wiley
Abstract:: Carbon dioxide (CO₂) fluxes between the ocean and atmosphere on continental margins are difficult to diagnose because these regions experience large variability over spatial and temporal scales spanning meters to basins and hours to years, respectively. In a global sense, continental margins could represent a significant atmospheric CO₂ sink, equivalent...
Resource Type:: Dissertation

Dynamics of organic matter production and degradation during coastal diatom blooms

Creator:: Wetz, Michael S.
Abstract:: Experiments were designed to answer key questions about diatom-derived organic matter cycling (i.e., production and degradation) in coastal systems. Dissolved organic matter (DOM) production was examined in axenic batch cultures of five diatom species. Dissolved organic carbon (DOC) release rates varied between species, but were significantly higher for all species...
Resource Type:: Dissertation
Full Text:: : ________________________________________________________________________ Patricia A. Wheeler Experiments were designed to answer key questions about

High-frequency measurements of total CO₂ : Method development and first oceanographic observations

Creator:: Bandstra, Leah M.
Abstract:: As concern grows about the long-term effects of increasing atmospheric CO₂ concentrations, it becomes increasingly important to understand the cycling of carbon on Earth, particularly in the dynamic marine reservoir. Gas exchange and relatively rapid ocean mixing times mean that the oceans play a significant role in determining the atmospheric...
Resource Type:: Masters Thesis
Full Text:: seconds. r. 2800 C 00 L 0 2600 U) U) 2400 2200 21 0 1000 2000 3000 4000 5000 6000 seconds

High-resolution sampling of particulate organic carbon in a coastal upwelling system

Creator:: Holser, Rachel R.
Abstract:: Summertime, wind-driven upwelling off the Oregon coast delivers nutrient rich water to the surface that fuels the autotrophic production of particulate organic carbon (POC). This POC can be transported horizontally by fluid motions and vertically by sinking to the bottom where it can be entrained in the benthic boundary layer...
Resource Type:: Masters Thesis
Full Text:: pump that delivers water at ~8 L min -1 to the shipboard laboratory via a tube in the core of the

Riverine input of macronutrients, iron, and organic matter to the coastal ocean off Oregon, U.S.A., during the winter

Creator:: Wetz, Michael S., Hales, Burke, Chase, Zanna, Wheeler, Patricia A., and Whitney, Michael M.
Abstract:: Three cross‐shelf transects were conducted off northern Oregon in February, 2003, coincident with flooding of Coast Range rivers, to assess the riverine impact on coastal ocean biogeochemistry. During downwelling conditions, low salinity river‐influenced water was located in a narrow band near the coast and contained elevated macronutrient, iron, and organic...
Resource Type:: Article
Full Text:: Wetz, Michael S., Burke Hales, Zanna Chase, Patricia A. Wheeler

The distribution and partitioning of dissolved organic matter off the Oregon Coast : a first look

Creator:: Hill, Jon K.
Abstract:: The purpose of this thesis is to provide a first look at the spatial and temporal distributions of dissolved organic material (DOM) off the Oregon coast of North America. While this paper is not a comprehensive examination of these distributions, several patterns are identified as promising candidates for continued research....
Resource Type:: Masters Thesis
Full Text:: Dissolved Organic Matter off the Oregon Coast: A First Look. Abstract approved: Patricia A. Wheeler The

Production and partitioning of organic matter during simulated phytoplankton blooms

Creator:: Wetz, Michael S.
Abstract:: Few studies have examined the partitioning of organic matter in upwelling systems, despite the fact that these systems play a key role in carbon and nitrogen budgets in the ocean. We examined the production and partitioning of phytoplankton-derived organic matter in deck incubations off Oregon during the upwelling season. During...
Resource Type:: Masters Thesis
Full Text:: Organic Matter During Simulated Phytoplankton Blooms. Abstract approved: Patricia A. Wheeler Few

Quantitative analysis of nearshore morphological variability based on video imaging

Creator:: Alexander, Patricia Soupy
Abstract:: In the past, classification systems for the analysis of morphodynamic variability have been developed in an attempt to understand large scale coastal behavior. The motivation behind the creation of these classification systems has been to provide a framework of analysis, in order to understand large scale response to seasonal variability,...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Patricia Soupy Alexander for the

Development of an autonomous in-situ instrument for long-term monitoring of Cu(II) in the marine environment

Creator:: Holm, Christopher E.
Abstract:: An autonomous, in-situ instrument was developed to detect dissolved copper in seawater, suitable for deployment on time scales from weeks to months. A commercially available in-situ nitrate analyzer (YSI 9600) was adapted to measure copper (II) in seawater by chemiluminescence. Modifications included construction of a photomultiplier (PMT) based detector and...
Resource Type:: Masters Thesis
Full Text:: -sulphone membrane filter. The filtered water is brought to pH ~6 with ~300µL/L of 6N Ultrex® II HCl

High-frequency measurement of partial pressure and total concentration of carbon dioxide in seawater using microporous hydrophobic membrane contractors

Creator:: Hales, Burke, Chipman, David, and Takahashi, Taro
Abstract:: To investigate CO₂ chemistry in ocean water with greater time-space resolutions, we systems, which have state-of-the-art precision but an order of magnitude or better analysis, for carbon dioxide partial pressures (Pco₂) and total carbon dioxide Pco₂ system was based on equilibration of a CO₂-free carrier gas stream with seawater sample...
Resource Type:: Article
Full Text:: 8 L min–1 LPS sample stream. This unit, which constituted the equilibrator for our PCO2 system

ScholarsArchive@OSU

Sea-air CO₂ flux variability on the northeast Pacific continental margin

Dynamics of organic matter production and degradation during coastal diatom blooms

High-frequency measurements of total CO₂ : Method development and first oceanographic observations

High-resolution sampling of particulate organic carbon in a coastal upwelling system

Riverine input of macronutrients, iron, and organic matter to the coastal ocean off Oregon, U.S.A., during the winter

The distribution and partitioning of dissolved organic matter off the Oregon Coast : a first look

Production and partitioning of organic matter during simulated phytoplankton blooms

Quantitative analysis of nearshore morphological variability based on video imaging

Development of an autonomous in-situ instrument for long-term monitoring of Cu(II) in the marine environment

High-frequency measurement of partial pressure and total concentration of carbon dioxide in seawater using microporous hydrophobic membrane contractors

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