Abstract / Description of output
A homogenization technique is used to study the change in the frequency of planetary Rossby waves that results from their interaction with a small-scale two-dimensional topography. The frequency change is computed explicitly for a topography consisting of a random distribution of well-separated cylindrical seamounts; it corresponds to a phase-speed increase (decrease) when the hat-bottom Rossby wave frequency is larger (smaller) than a typical topographic frequency. The topography is also shown to lead to a finite damping of the Rossby waves, even in the limit of infinitesimally small Ekman friction.
Original language | English |
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Pages (from-to) | 1820-1826 |
Number of pages | 7 |
Journal | Journal of Physical Oceanography |
Volume | 30 |
Issue number | 7 |
Publication status | Published - Jul 2000 |
Keywords / Materials (for Non-textual outputs)
- EXTRATROPICAL PLANETARY-WAVES
- STRATIFIED OCEAN
- VARIABLE DEPTH
- SPHERES
- SPEED