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Filtering by: Creator Tilt, Jenna H. Remove constraint Creator: Tilt, Jenna H. Degree Field Oceanography Remove constraint Degree Field: Oceanography Degree Level Master's Remove constraint Degree Level: Master's

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  • The sediment response of a dissipative beach to variations in wave climate

    Creator:
    Haxel, Joseph H.
    Abstract:
    Using wave and wind data from nearby buoys and gauges, real time kinematic global positioning system (RTK-GPS) and light detection and ranging (lidar) topographic survey data, and a robust video record, we have quantified the Large Scale Coastal Behavior (LSCB) of a dissipative end member beach in the Pacific Northwest....
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Joseph H. Haxel for the degree of

  • Motions of a small spar buoy

    Creator:
    Dorman, Clive Edgar
    Abstract:
    The motions of a small spar buoy were measured in deep water. The measured variables were two buoy tilts, three accelerations, two wave slopes and the wave height. The variables were corrected for buoy motion and rotated to stationary coordinates, Fast Fourier Transformed, and analyzed spectrally. Analysis included power spectra,...
    Resource Type:
    Masters Thesis
    Full Text:
    Cospectrum of buoy tilt, X, and wave slope, X (OX, SX) 47 13 Coherence and phase of buoy tilt, X, and wave

  • Photoperiod and the timing of pupping in the Pacific harbor seal (Phoca vitulina richardsi) with notes on reproduction in northern fur seals and Dall porpoises

    Creator:
    Temte, Jonathan L.
    Abstract:
    Birth and pupping season records of Pacific harbor seals (Phoca vitulina richardsi) were used in an analysis of photoperiod effect on the timing of birth in this species. Dates and latitudes of births were converted into photoperiods using a photoperiod equation. Sequential dates from parturition were converted into photoperiods and...
    Resource Type:
    Masters Thesis
    Full Text:
    13.8 h/day photoperiod occurring at 68 days post partum. PS/SG harbor seals experience a

  • Density separation of clay minerals

    Creator:
    Nelsen, Terry A.
    Abstract:
    Illite, chlorite, montmorillonite and kaolinite, as well as natural marine sediments and mixtures of the standards were subjected to density separation by centrifugation in a linear heavy-liquid gradient. The density layers yielded by centrifugation were recovered and analyzed by X-ray diffraction. Separates were not monomineralic but rather were polymineralic usually...
    Resource Type:
    Masters Thesis
    Full Text:
    used to prepare heavy liquid density gradients. 6 B. Closeup of inverted prism and tilt mechanism of A

  • A mesoscale study of coastal currents and upwelling off Peru

    Creator:
    Enfield, David B.
    Abstract:
    Moored instrument records, drogue displacements, and hydrographic observations are used in describing the coastal currents and upwelling off Peru. The data were obtained over the continental shelf near 15°S. during a two week study in late March and early April of 1969. First order statistics and graphical representations of current...
    Resource Type:
    Masters Thesis
    Full Text:
    the instrument is poor. An indication of instrument tilt is also produced on the film, from which a

  • Observing the coastal ocean with HF radar

    Creator:
    O'Keefe, Sheila
    Abstract:
    Coastal-based high-frequency (HF) radar systems are an increasingly used tool for measuring surface currents in the coastal ocean. These systems provide a spatial and temporal resolution not achievable with other methods. Standard-range sites typically generate hourly maps of surface currents on a 2km grid extending approximately 50km from shore while...
    Resource Type:
    Masters Thesis
    Full Text:
    . 6 Roughgarden, J., S. Gaines and H. Possingham, 1988. Recruitment dynamics in complex life cycles

  • Vertical current measurement in the Oregon coastal upwelling region

    Creator:
    Deckard, Dennis E.
    Abstract:
    Direct measurements of vertical water motions were made in the Oregon coastal region during the 1972 summer upwelling season. The instruments used were the Webb-Voorhis vertical current meters which are freely drifting neutrally buoyant floats capable of sensing vertical motion. It was found that in the region studied, water tended...
    Resource Type:
    Masters Thesis
    Full Text:
    tilt. Recently, neutrally buoyant floats have been designed to make direct measurements on the

  • An experimental evaluation of a passive anti-roll tank system

    Creator:
    Plank, William Sanford
    Abstract:
    The effectiveness of the passive anti-roll tank system aboard the R/V YAQUINA was determined. Measurements of ship roll, effective waveslope and tank water transfer were analyzed using a systems analysis technique. Time series of the inputs and outputs of the ship/tank system and of the tank itself were processed using...
    Resource Type:
    Masters Thesis
    Full Text:
    Figure 2. ZZLE BAN II 4.5' 225' h. s'i k 32' + I 0 0 6' 0 0 I 0 0 ELEVATION PLAN Figure 2

  • An investigation of evaporation from the ocean off the Oregon coast, and from Yaquina Bay, Oregon

    Creator:
    DeRycke, Richard J.
    Abstract:
    A weather station was established on the dock of the Oregon State University Marine Science Center, Yaquina Bay, Oregon. A total of 197 weather observations was made from 30 June 1966 to 23 September 1966, with emphasis on the determination of the rate of evaporation from an evaporation pan and...
    Resource Type:
    Masters Thesis
    Full Text:
    incoming radiation (Q). 12a 4 Schematic representation of the tilt of the surface water in the pan caused

  • 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:
    don’t tilt in the y-direction (∂v/∂z = 0, by thermal wind)and compliments the assumption that ∂/∂y = 0