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Drifter dispersion in the Adriatic Sea: Lagrangian data and chaotic model
2001 (English)In: Annales Geophysicae, ISSN 0992-7689, E-ISSN 1432-0576, Vol. 19, no 1, 121-129 p.Article in journal (Refereed) Published
Abstract [en]

We analyze characteristics of drifter trajectories from the Adriatic Sea with recently introduced nonlinear dynamics techniques. We discuss how in quasi-enclosed basins, relative dispersion as a function of time, a standard analysis tool in this context, may give a distorted picture of the dynamics. We further show that useful information may be obtained by using two related non-asymptotic indicators, the Finite-Scale Lyapunov Exponent (FSLE) and the Lagrangian Structure Function (LSF), which both describe intrinsic physical properties at a given scale. We introduce a simple chaotic model for drifter motion in this system, and show by comparison with the model that Lagrangian dispersion is mainly driven by advection at sub-basin scales until saturation sets in.

Place, publisher, year, edition, pages
2001. Vol. 19, no 1, 121-129 p.
Keyword [en]
oceanography general(marginal and semiclosed seas), oceanography physical (turbulence, diffusion, and mixing processes, upper ocean processes), meandering jet, surface circulation, diffusion, predictability, turbulence, transport, exchange, currents, times
Identifiers
URN: urn:nbn:se:kth:diva-20801ISI: 000169900400012OAI: oai:DiVA.org:kth-20801DiVA: diva2:339498
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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