Duan, Jinqiao and Wiggins, Stephen (1996) Fluid Exchange across a Meandering Jet Quasiperiodic Variability. Journal of Physical Oceanography, 26 (7). pp. 1176-1188. ISSN 0022-3670. http://resolver.caltech.edu/CaltechAUTHORS:DUAjpo96
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In this paper, the motion of fluid parcels in the two-dimensional kinematic model of a meandering jet developed by Bower and Samelson is studied. The earlier work is extended by considering quasiperiodic spatiotemporal variability in a reference frame moving with the phase speed of the meander. This necessitates the introduction of recently developed techniques in dynamical systems theory for analyzing transport in velocity fields with quasiperiodic variability. A detailed comparison between exchange for variability with one and two independent frequencies is given, and it is shown that the exchange rates may be very different for periodic and quasiperiodic variability.
|Additional Information:||© 1996 American Meteorological Society. (Manuscript received June 30, 1995, in final form October 27, 1995) We would like to thank Darin Beigie for helpful discussions concerning the calculation of fluxes and Roger Samuelson for many helpful suggestions. The computer programs used for the calculation of the different fluxes are available through the Caltech Control and Dynamical Systems anonymous ftp server. They can be obtained by using ftp and anonymously logging in to avalon.caltech.edu. They are in the directory /pub/cds/software under the titles FiniteTimeFlux.ma and InfiniteTimeFlux.ma. This reasearch was supported by ONR Grant N00014-89-J-3023.|
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