Search Results

You are looking at 1 - 4 of 4 items for :

  • Planetary waves x
  • Oceanic Flow–Topography Interactions x
  • All content x
Clear All
Hui Wu

1. Introduction General circulation in the open ocean is constrained to the upper layer and thus hardly feels the abyssal topography, and the pressure anomaly away from the equator propagates westward due to Earth’s curvature, i.e., the planetary β effect. On reaching the shelf, the steep topography serves as a waveguide and deflects the oceanic information equatorward, i.e., the topographic Rossby wave, before it reaches the coastal region. In this case, the bathymetric slope, i.e., the

Restricted access
Kristin L. Zeiden, Jennifer A. MacKinnon, Matthew H. Alford, Daniel L. Rudnick, Gunnar Voet, and Hemantha Wijesekera

topographic to mesoscales. Rapid repeat ship surveys around the northern and southernmost ends of Palau observed flow separation around small-scale headlands and the subsequent generation of energetic eddies O (1) km during strong tidal flows with Ro up to O (10 2 ) ( MacKinnon et al. 2019 ; Johnston et al. 2019 ). Here and throughout this manuscript, Ro is the Rossby number, a nondimensional ratio of relative to planetary vorticity (Ro = ζ / f ). At O (10) km, repeat box surveys around the northern

Restricted access
Bowen Zhao, Emma Chieusse-Gérard, and Glenn Flierl

LaCasce (1998) for a comprehensive review on early studies. Early studies with barotropic vortices using stability analysis or numerical/laboratory approaches revealed basic processes of this interaction, including radiation of topographic waves over bottom slopes and cross-slope propagation via nonlinear self-advection ( Carnevale et al. 1991 ; Wang 1992 ; Grimshaw et al. 1994a , b ). Laboratory and numerical studies with barotropic vortices typically find that topography could strongly influence

Full access
Kristin L. Zeiden, Daniel L. Rudnick, and Jennifer A. MacKinnon

of sustained glider observations ( Rudnick and Cole 2011 ) provide the mean current patterns and their variability around the island of Palau in the tropical North Pacific on horizontal scales of 10–100 km, vertical scales of 10 m, and temporal scales as short as a week. For flows with rotation, a reasonable measure of eddy intensity is the Rossby number Ro, here defined as the ratio of relative to planetary vorticity (Ro = ζ / f ). Here Ro is a signed quantity, as used in, for example, Whitt

Full access