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Filtering by: Creator Erofeev, A. Y. (Anatoli Y.) Remove constraint Creator: Erofeev, A. Y. (Anatoli Y.) License All rights reserved Remove constraint License: All rights reserved

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  • Ensemble-variational data assimilation for dynamically challenging coastal ocean circulation

    Creator:
    Pasmans, Ivo
    Abstract:
    Currently, forecasts produced by the Oregon-Washington (OR-WA) Coastal Ocean Forecast System are constrained by assimilation of only surface observations. The 4-dimensional variational (4DVAR) data assimilation (DA) algorithm is utilized to combine the model and the data, with the time-independent forecast ("background'') error covariance B. In this study, two possible improvements...
    Resource Type:
    Dissertation
    Full Text:
    . Barth, R.K. Shearman, and A. Erofeev collected the glider observations which are used in chapters 2 and

  • 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
    Full Text:
    Anatoli Erofeev for teaching me how to remotely pilot Slocum gliders. Thanks to Dr. Barth and Dr

  • 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

  • Absolute water velocity profiles from glider-mounted acoustic doppler current profilers

    Creator:
    Ordonez, Christopher Edward
    Abstract:
    This paper details a method to compute absolute water velocity profiles from glider-based acoustic Doppler current profiler (ADCP) measurements based on the "shear method" developed for lowered ADCPs. The instrument is a 614-kHz Teledyne RDI ADCP integrated into the body of a Teledyne Webb Research Slocum Glider. Shear is calculated...
    Resource Type:
    Masters Thesis
    Full Text:
    . Kipp Shearman, John A. Barth, T. Patrick Welch, Anatoli Erofeev, Zen Kurokawa 5 2.1

  • The Role of Submesoscale Features in Transporting Heat and Salt Across Ocean Fronts

    Creator:
    Sanchez-Rios, Alejandra
    Abstract:
    The focus of this dissertation is the analysis of submesoscale and finescale features measured at oceanic fronts and the role they play in the transport of heat and salt. Two different geographical areas were used to analyze this transport: one, an area on the western side of the North Atlantic...
    Resource Type:
    Dissertation
    Full Text:
    velocity (a-e), relative cross- flow velocity (f-j), and relative vorticity ζk = ( ∂v ∂x − ∂u ∂y ) f−1 (k

  • Perceived comfort of three styles of men's running pants

    Creator:
    Christel, Deborah A.
    Abstract:
    Athletic workout clothing is designed to help the wearer stay comfortable, cool, and dry. There are several different styles of athletic apparel available at retailers and each individual has a preference as to what is comfortable for him or her. Comfort of clothing has traditionally been related to the fabric...
    Resource Type:
    Masters Thesis
    Full Text:
    THE THESIS OF Deborah A. Christel for the degree of Master of Science in Design and Human

  • Applications of slow-moving autonomous platforms for passive acoustic monitoring and density estimation of marine mammals

    Creator:
    Fregosi, Selene
    Abstract:
    Advances in mobile autonomous vehicles for oceanographic sensing provide new opportunities for passive acoustic monitoring of marine mammals. Acoustically equipped mobile autonomous platforms, including gliders, deep-water profiling floats, and drifting surface buoys can survey for a variety of marine mammal species over intermediate spatiotemporal scales. Additionally, such mobile platforms may...
    Resource Type:
    Dissertation
    Full Text:
    gliders, Will, Otis, and Otis, Jr. to record sound. Anatoli Erofeev and Steve Pierce were my glider

  • 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:
    . Thank you to Anatoli Erofeev for taking the time to process (and reprocess) the data for for me and

  • Optics, structure and variability of the offshore Columbia River plume

    Creator:
    Saldías, Gonzalo
    Abstract:
    The Columbia River delivers the greatest amount of freshwater to the coastal ocean along the U.S. Pacific coast. This freshwater forms the Columbia River plume, a mesoscale plume with significant implications on coastal ocean physical, biological, chemical, and geological processes. The plume is transported south and offshore during the upwelling...
    Resource Type:
    Dissertation
    Full Text:
    alongshore direction except at y=0 km where an estuary is included). 4 1.3 Response of a high-discharge

  • Cherenkov Glass Detectors for Gamma and Neutron Detection

    Creator:
    Natto, Hattan
    Abstract:
    Cherenkov detectors have been developed and used in several fields since the discovery of Cherenkov radiation. They do have several advantages compared with other detector types, such as low noise due to the low-energy threshold of Cherenkov radiation, and short decay constant (on the order of picoseconds). However, the light...
    Resource Type:
    Dissertation
    Full Text:
    Methods A 732:342–345, 2013. [9] A. Anatoli, M. A. Billercia, “Scintillation-Cherenkov detector and