Numerical experiments on the effects of a meridional ridge on the transmission of energy by barotropic Rossby waves Public Deposited

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  • Analytical and numerical models are used to study the effects of a meridional ridge on the propagation of barotropic Rossby waves produced by distant wind stress forcing. The analytical model illustrates the qualitative aspects of the problem by solving a simplified form of the potential vorticity equation. The analytical results are complemented by numerical experiments using a shallow-water model. In these experiments, waves are excited near the eastern boundary of the model. The effect that the presence of a meridional ridge has on the propagation of these waves is evaluated using spectral analysis. The numerical experiments show that the ridge acts as a low-pass filter for westward propagating waves. In a 4000-rn deep ocean a ridge 500 km wide and 500 m high has little effect in preventing energy transmission by barotropic waves. The topographic effect increases sharply with the ridge's height so that a 2000-rn ridge almost isolates two neighboring subbasins. The numerical results indicate that for the range of geophysically relevant cases the ridge's width plays only a minor role.
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  • Matano, R.P., Numerical experiments on the effects of a meridional ridge on the transmission of energy by barotropic Rossby waves, J. Geophys. Res.,100, C9.
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  • Journal of Geophysical Research
  • Vol. 100 (1995)
  • description.provenance : Submitted by Mary Phan (mpscanner@gmail.com) on 2010-04-22T21:02:03Z No. of bitstreams: 1 Matano JGR 1995.pdf: 3063269 bytes, checksum: ff8b7c62ca4ac878c374d4031b3307a5 (MD5)
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2010-04-26T14:53:07Z (GMT) No. of bitstreams: 1 Matano JGR 1995.pdf: 3063269 bytes, checksum: ff8b7c62ca4ac878c374d4031b3307a5 (MD5)
  • description.provenance : Made available in DSpace on 2010-04-26T14:53:07Z (GMT). No. of bitstreams: 1 Matano JGR 1995.pdf: 3063269 bytes, checksum: ff8b7c62ca4ac878c374d4031b3307a5 (MD5) Previous issue date: 1995-09-15

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