Assessing Relative Dispersion

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DOI: 10.4236/am.2017.811115    910 Downloads   1,627 Views  

ABSTRACT

We assess the four point method of relative dispersion proposed by Jones and Winkler to identify the hyperbolic trajectories of a system. We sample a discrete analog to a quasi-geostrophic, single layered flow field and perform a comparison of the dispersion of neighboring points after iteration. We evaluate our method by performing a transformation to (x, y) space and comparing the trajectories corresponding to maximum dispersion with the (x, y) values of trajectories of the Standard map, derived from traditional techniques. We perform a similar evaluation using a 2D Ross by wave. We show that the method of relative dispersion is able to generate 2nd order accurate (on the scale of the discretization) hyperbolic trajectories.

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Redd, T. , Moghraby, A. and Tillman, T. (2017) Assessing Relative Dispersion. Applied Mathematics, 8, 1572-1589. doi: 10.4236/am.2017.811115.

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