Publication Abstracts

Schmidt and Johnson 1997

Schmidt, G.A., and E.R. Johnson, 1997: The scattering of stratified topographic Rossby waves by seafloor ridges. Geophys. Astrophys. Fluid Dyn., 84, 29-52.

Low-frequency topographic Rossby waves in continuously stratified flow can propagate along both coastal shelves and seafloor ridges. The scattering of these waves by abrupt changes in topography is considered in the case of a seafloor ridge whose cross-section varies, and also in the case where coastally trapped waves are incident on a seafloor ridge abutting the coastal shelf. The use of an isobath tracing result combined with a new more efficient method of calculating the wave modes allows complete resolution of the transmitted and reflected modes.

In the first case, it is shown that significant amounts of energy can be reflected back along the ridge if there is a change in height of the ridge. In the second case, it is shown that the transmission of energy along the shelf by the (barotropic) lowest mode is almost exactly proportional to the relative depth of the ridge. However, for higher modes the transmission of energy and it's distribution amongst the transmitted modes is crucially dependent on the structure of the mode and in particular the positions of the nodes in the pressure field.

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BibTeX Citation

@article{sc05000n,
  author={Schmidt, G. A. and Johnson, E. R.},
  title={The scattering of stratified topographic Rossby waves by seafloor ridges},
  year={1997},
  journal={Geophys. Astrophys. Fluid Dyn.},
  volume={84},
  pages={29--52},
}

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RIS Citation

TY  - JOUR
ID  - sc05000n
AU  - Schmidt, G. A.
AU  - Johnson, E. R.
PY  - 1997
TI  - The scattering of stratified topographic Rossby waves by seafloor ridges
JA  - Geophys. Astrophys. Fluid Dyn.
VL  - 84
SP  - 29
EP  - 52
ER  -

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