Search Results

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

  • Heat islands x
  • Oceanic Flow–Topography Interactions x
  • All content x
Clear All
Kristin L. Zeiden, Jennifer A. MacKinnon, Matthew H. Alford, Daniel L. Rudnick, Gunnar Voet, and Hemantha Wijesekera

1. Introduction Vorticity wakes are often generated by energetic ocean currents flowing past islands. These wakes are of interest to the oceanographic community because they can extract momentum from the incident flow and modify water masses on short time and spatial scales. For sufficiently strong currents, eddies form and separate from the island ( Heywood et al. 1990 ). Energetic, unstable wake eddies may dissipate locally and increase mixing close to the island ( Chang et al. 2013 ). More

Restricted access
Hemantha W. Wijesekera, Joel C. Wesson, David W. Wang, William J. Teague, and Z. R. Hallock

1. Introduction Flow interactions over space and time with abrupt topography, such as with small-scale islands and deep ocean ridges, can significantly impact regional to large-scale ocean circulation through intense turbulent mixing, formation of mesoscale wakes and eddy shedding behind islands, submesoscale upwelling and downwelling, and generation of lee internal waves ( Baines 1995 ). Along with ocean variability due to topographic features, islands and atolls also modify the atmospheric

Open access
Hui Wu

heat conduction analogy,” in which the − y direction plays the role of time and κ ≡ r / fs plays the role of conductivity. Consequently, the entire shelf experiences the same along-shelf pressure gradient as on the shelf edge, i.e., − g η y B , except for an initial insulation area. The inductive shelf circulation was then estimated as υ = − g h η y B / r , which is proportional to water depth h . The f -plane ATW theory has been used to explain the circulation in the northern South China

Restricted access
Madeleine M. Hamann, Matthew H. Alford, Andrew J. Lucas, Amy F. Waterhouse, and Gunnar Voet

-bottom breaking, the time-averaged vertical profile of dissipation rate ϵ would be enhanced throughout the water column rather than increasing toward the bottom. Given the prevalence of canyons along the continental margins, this vertical distribution of dissipation would alter the distribution of heat and other tracers on global scales ( Melet et al. 2016 ). Furthermore, due to their near-ubiquitous presence, canyons may be responsible disproportionately in the dissipation of global mode-1 internal tides

Restricted access