Index Catalog // ScholarsArchive@OSU

Establishing suitability of an ocean model for a poleward undercurrent study

Creator:: Duran, Rodrigo
Abstract:: Modifications of an ocean model are described, as the objective for which the model was used changed to study the kinematics and dynamics of an eastern-boundary poleward undercurrent.
Resource Type:: Capstone Project
Full Text:: that generates a mean �ow (Samelson & Allen 1986), or by interaction between eddies and bathymetry (e.g

Above and Below : Oregon Coastal Phytoplankton Bloom Dynamics from Sea and Space

Creator:: McKibben, S. Morgaine
Abstract:: Phytoplankton are a sentinel class of organisms in the marine environment. Through their photosynthetic activity in sunlit waters worldwide, phytoplankton shape the health and productivity of marine ecosystems and impact the global climate. In this work a range of ocean sensing technologies (via ships, surf zone sampling, moorings, gliders, and...
Resource Type:: Dissertation
Full Text:: , and pirate’s booty. Thank you to Robert Allan, you have always been so approachable and helpful

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:: , S.K. Allen, J. Boschung, A. Nauels, Y. Xia, V. Bex and P.M. Midgley (eds.)]. Cambridge University

The effect of river discharge and wind forcing on the Oregon coastal ocean during fall and winter

Creator:: Mazzini, Piero Luigi Fernandes
Abstract:: Freshwater provided from river discharge influences the dynamics and circulation of most continental shelves around the world. It has profound effects on the transport and fate of materials and substances originated from rivers and estuaries, as well as on the ocean biogeochemistry and marine ecosystems. The effect of buoyancy forcing...
Resource Type:: Dissertation
Full Text:: Piero L.F. Mazzini, John A. Barth, Robert K. Shearman and Anatoli Erofeev Journal of Physical

Influence of upwelling-season coastal currents on near-bottom dissolved oxygen concentrations over a submarine bank

Creator:: Adams, Katherine A.
Abstract:: Wind-driven coastal upwelling brings subsurface water onto the central-Oregon shelf after the spring transition each year. This cold and salty source water is oxygen-poor, yet above the hypoxic threshold, dissolved oxygen < 1.4 ml l⁻¹. Once on the shelf, dissolved oxygen (DO) concentrations of upwelled near-bottom waters are modified by...
Resource Type:: Dissertation

Data assimilation for prediction of shallow water flows with uncertain bathymetry

Creator:: Wilson, Gregory W.
Abstract:: A new method is introduced for incorporating bathymetric uncertainty into predictions of nearshore and river flows (i.e., unstratified flows primarily forced by pressure and radiation stress gradients). The method involves the use of the ensemble Kalman filter (EnKF) as a parameter estimation scheme, where the parameter to be estimated is...
Resource Type:: Dissertation
Full Text:: (and probably neither did they) but in the end it has been invaluable. Robert Miller, my “sixth

Dynamic seascapes : a quantitative framework for scaling pelagic ecology and biogeochemistry

Creator:: Kavanaugh, Maria T.
Abstract:: Understanding and modeling microbial responses and feedbacks to climate change is hampered by a lack of a framework in the pelagic environment by which to link local mechanism to large scale patterns. Where terrestrial ecology draws from landscape theory and practice to address issues of scale, the pelagic seascape concept...
Resource Type:: Dissertation
Full Text:: COAS staff members, especially Robert Allan, Lori Hartline, and Mary Hitch who always had a way to

An investigation of the distribution and abundance of ichthyoplankton and juvenile benthic fishes in relation to nearshore hypoxia within the Northern California Current system

Creator:: Johnson, Angela M.
Abstract:: Nearshore hypoxia within the Northern California Current (NCC) system is a seasonal phenomenon caused by coastal upwelling and occurs mainly during late-summer and early fall. The effects of low oxygen levels on fish and invertebrate communities, particularly during early-life history stages, however, are poorly known for this area. I investigated...
Resource Type:: Masters Thesis

Proof-of‐Concept : Automated high‐frequency measurements of PCO₂ and TCO₂ and real‐time monitoring of the saturation state of calcium carbonate

Creator:: Vance, Jesse M.
Abstract:: The rapid increase in atmospheric carbon dioxide (CO₂) over the last 250 years has led to the absorption of approximately 550 billion tons of anthropogenic CO₂ by the global ocean. This oceanic uptake of CO₂ has resulted in decreasing pH and alterations to carbonate chemistry, threatening many ecologically and economically...
Resource Type:: Capstone Project
Full Text:: reminding me to have fun. Thank you to Lori Hartline and Robert Allan

Long term albacore (Thunnus alalunga) spatio-temporal association with environmental variability in the Northeastern Pacific

Creator:: Phillips, A. Jason
Abstract:: This study investigated long-term (1961-2008) changes in albacore (Thunnus alalunga) abundance and distribution in relation to local environmental and large-scale climate indices in the Northeastern Pacific using time series and spatial analyses. Prior to the time series analysis, a wavelet analysis was conducted to examine nonrandom patterns of cyclical variability...
Resource Type:: Masters Thesis
Full Text:: very difficult without you around to help. Thanks Lori Heartline and Robert Allan, you two were

ScholarsArchive@OSU

Establishing suitability of an ocean model for a poleward undercurrent study

Above and Below : Oregon Coastal Phytoplankton Bloom Dynamics from Sea and Space

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

The effect of river discharge and wind forcing on the Oregon coastal ocean during fall and winter

Influence of upwelling-season coastal currents on near-bottom dissolved oxygen concentrations over a submarine bank

Data assimilation for prediction of shallow water flows with uncertain bathymetry

Dynamic seascapes : a quantitative framework for scaling pelagic ecology and biogeochemistry

An investigation of the distribution and abundance of ichthyoplankton and juvenile benthic fishes in relation to nearshore hypoxia within the Northern California Current system

Proof-of‐Concept : Automated high‐frequency measurements of PCO₂ and TCO₂ and real‐time monitoring of the saturation state of calcium carbonate

Long term albacore (Thunnus alalunga) spatio-temporal association with environmental variability in the Northeastern Pacific

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