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On the generation of Kelvin-type waves by atmospheric disturbances

Published online by Cambridge University Press:  29 March 2006

Richard E. Thomson
Richard E. Thomson
Affiliation:
Institute of Oceanography, University of British Columbia, Canada
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Abstract

This paper considers the surface response of a semi-infinite, uniformly rotating, constant depth, homogeneous ocean to a variable atmospheric force. For a general wind and pressure system it is shown that forced Kelvin-type waves can be generated and that only the longshore wind component and the pressure can generate them. In particular a semi-infinite wind and moving pressure pattern are shown to generate Kelvin waves that travel away from the force discontinuities at the speed of shallow-water waves. The waves in the latter case exhibit a frequency shift typical of non-dispersive waves from a moving source. Some numerical values for the amplitudes of the Kelvin waves are also given.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 42 , Issue 4 , 30 July 1970 , pp. 657 - 670
Copyright
© 1970 Cambridge University Press

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References

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