Relative dispersion in the Adriatic Sea: Lagrangian data and chaotic model

نویسندگان

  • Guglielmo Lacorata
  • Erik Aurell
  • Angelo Vulpiani
چکیده

We perform a data analysis of trajectories of surface drifters deployed in the Adriatic Sea, and compare the results with a kinematic model. We show that, in the case of quasi-closed basins, the standard approach in terms of the diffusion coefficient gives poor information. In fact, the standard linear law for the dispersion cannot hold before finite-scale saturation effects set in. Other quantities, such as the Finite Size Lyapunov Exponents, are more appropriate since they can provide clearer information on the mean divergence rate of two initially close trajectories over a range of spatial scales.

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تاریخ انتشار 1999