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Browsing by Author "Nash, Jonathan"

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Browsing by Author "Nash, Jonathan"

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  • Diagnosing a partly standing internal wave in Mamala Bay, Oahu 
    Martini, K. I.; Alford, M. H.; Nash, Jonathan; Kunze, E.; Merrifield, M. A. (American Geophysical Union, 2007-09-07)
    An internal partly standing wave in Mamala Bay, Hawaii is studied using new observations and the Princeton Ocean Model (POM). Previous work suggested a convergence in the bay of east- and westbound waves emanating fro ...
  • Hotspots of deep ocean mixing on the Oregon continental slope 
    Nash, Jonathan; Alford, M. H.; Kunze, E.; Martini, K.; Kelly, S. (American Geophysical Union, 2007-01-09)
    Two deep ocean hotspots of turbulent mixing were found over the Oregon continental slope. Thorpe-scale analyses indicate time-averaged turbulent energy dissipation rates of ε > 10⁻⁷ W/kg and eddy diffusivities of Kp ~ ...
  • Inner-shelf circulation off the central Oregon Coast 
    Kirincich, Anthony R. (2007-05-24)
    Inner-shelf circulation and mechanisms of across-shelf transport of water masses were examined using seven years of observations collected by the Partnership for Interdisciplinary Studies of Coastal Oceans (PISCO) progra ...
  • Internal hydraulic flows on the continental shelf: High drag states over a small bank 
    Nash, Jonathan; Moum, James N. (American Geophysical Union, 2001-03-15)
    Observations of currents, hydrography, and turbulence provide unambiguous evidence for hydraulic control of flow over an isolated three-dimensional topographic feature on Oregon’s continental shelf. The flow becomes crit ...
  • Observations of cross-shore sediment transport and formulation of the undertow 
    Guannel, Gregory E. (2009-10-12)
    A new set of data from a large-scale sand bar migration experiment is presented. During this experiment, two sandbars were generated. One of the bar was generated by the action of undertow, and sediment moved offshore. ...
  • Particle resuspension in the Columbia River plume near field 
    Spahn, Emily Y.; Homer-Devine, Alexander R.; Nash, Jonathan; Jay, David A.; Kilcher, Levi (American Geophysical Union, 2009-11-24)
    Measurements of suspended sediment concentration, velocity, salinity, and turbulent microscale shear in the near-field region of the Columbia River plume are used to investigate the mechanisms of sediment resuspension ...
  • Quantification of advection and dispersion in lateral subsurface flowpaths at the hillslope-scale 
    Victory, Nichole I. (2007-07-16)
    It is becoming increasingly important to understand fundamental hillslope-scale hydrological processes. Most hillslope-sale transport experiments have generally focused on conceptual findings or other aspect of flow beha ...
  • River influences on shelf ecosystems: Introduction and synthesis 
    Hickey, B. M.; Kudela, R. M.; Nash, Jonathan; Bruland, K. W.; Peterson, W. T.; MacCready, P.; Lessard, E. J.; Jay, D. A.; Banas, N. S.; Baptista, A. M.; Dever, Edward P.; Kosro, P. Michael; Kilcher, L. K.; Homer-Devine, A. R.; Zaron, E. D.; McCabe, R. M.; Peterson, J. O.; Orton, P. <.; Pan, J.; Lohan, M. C. (American Geophysical Union, 2010-02-03)
    River Influences on Shelf Ecosystems (RISE) is the first comprehensive interdisciplinary study of the rates and dynamics governing the mixing of river and coastal waters in an eastern boundary current system, as well a ...
  • Structure and composition of a strongly stratified, tidally pulsed river plume 
    Nash, Jonathan; Kilcher, Levi F.; Moum, James N. (American Geophysical Union, 2009-08-14)
    The initial composition of a river plume depends on the cumulative turbulent entrainment within the estuary and how this dilutes the supplied freshwater. Here we examine the relative roles of turbulence and freshwater ...

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