Now showing items 1-8 of 8

  • Aerial imaging of fluorescent dye in the near shore 

    Clark, David B.; Lenain, Luc; Feddersen, Falk; Boss, Emmanuel S.; Guza, R. T. (American Meteorological Society, 2014-06)
    Aerial images are used to quantify the concentration of fluorescent Rhodamine water tracing (WT) dye in turbid and optically deep water. Tracer releases near the shoreline of an ocean beach and near a tidal inlet were ...
  • Direct estimation of the Reynolds stress vertical structure in the nearshore 

    Feddersen, Falk; Williams, Albert J. (American Meteorological Society, 2007-01)
    Measurements of the vertical Reynolds stress components in the wave-dominated nearshore are required to diagnose momentum and turbulence dynamics. Removing wave bias from Reynolds stress estimates is critical to a successful ...
  • The effect of wave breaking on surf-zone turbulence and alongshore currents : a modeling study 

    Feddersen, Falk; Trowbridge, John H. (American Meteorological Society, 2005-11)
    The effect of breaking-wave-generated turbulence on the mean circulation, turbulence, and bottom stress in the surf zone is poorly understood. A one-dimensional vertical coupled turbulence (k–ε) and mean-flow model is ...
  • Episodic vertical nutrient fluxes and nearshore phytoplankton blooms in Southern California 

    Omand, Melissa M.; Feddersen, Falk; Guza, R. T.; Franks, Peter J. S. (Association for the Sciences of Limnology and Oceanography, 2012-11)
    Three distinct phytoplankton blooms lasting 4–9 d were observed in approximately 15-m water depth near Huntington Beach, California, between June and October of 2006. Each bloom was preceded by a vertical NO3 flux event ...
  • Model-data comparisons of shear waves in the nearshore 

    Noyes, T. James; Guza, R. T.; Feddersen, Falk; Elgar, Steve; Herbers, T. H. C. (American Geophysical Union, 2005-05-27)
    Observations of shear waves, alongshore propagating meanders of the mean alongshore current with periods of a few minutes and alongshore wavelengths of a few hundred meters, are compared with model predictions based on ...
  • Modeling surf zone tracer plumes : 1. Waves, mean currents, and low-frequency eddies 

    Feddersen, Falk; Clark, David B.; Guza, R. T. (American Geophysical Union, 2011-11-18)
    A model that accurately simulates surf zone waves, mean currents, and low-frequency eddies is required to diagnose the mechanisms of surf zone tracer transport and dispersion. In this paper, a wave-resolving time-dependent ...
  • Modeling surf zone tracer plumes : 2. Transport and dispersion 

    Clark, David B.; Feddersen, Falk; Guza, R. T. (American Geophysical Union, 2011-11-18)
    Five surf zone dye tracer releases from the HB06 experiment are simulated with a tracer advection diffusion model coupled to a Boussinesq surf zone model (funwaveC). Model tracer is transported and stirred by currents and ...
  • Vertical structure of dissipation in the nearshore 

    Feddersen, Falk; Trowbridge, John H.; Williams, Albert J. (American Meteorological Society, 2007-07)
    The vertical structure of the dissipation of turbulence kinetic energy was observed in the nearshore region (3.2-m mean water depth) with a tripod of three acoustic Doppler current meters off a sandy ocean beach. Surface ...