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Passive Tracer Patchiness and Particle Trajectory Stability in Incompressible Two-dimensional Flows : Volume 11, Issue 1 (25/02/2004)

By Beron-vera, F. J.

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Book Id: WPLBN0004019644
Format Type: PDF Article :
File Size: Pages 8
Reproduction Date: 2015

Title: Passive Tracer Patchiness and Particle Trajectory Stability in Incompressible Two-dimensional Flows : Volume 11, Issue 1 (25/02/2004)  
Author: Beron-vera, F. J.
Volume: Vol. 11, Issue 1
Language: English
Subject: Science, Nonlinear, Processes
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2004
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Brown, M. G., Olascoaga, M. J., & Beron-Vera, F. J. (2004). Passive Tracer Patchiness and Particle Trajectory Stability in Incompressible Two-dimensional Flows : Volume 11, Issue 1 (25/02/2004). Retrieved from http://hawaiilibrary.net/


Description
Description: RSMAS, University of Miami, Miami, Florida, USA. Particle motion is considered in incompressible two-dimensional flows consisting of a steady background gyre on which an unsteady wave-like perturbation is superimposed. A dynamical systems point of view that exploits the action-angle formalism is adopted. It is argued and demonstrated numerically that for a large class of problems one expects to observe a mixed phase space, i.e. the occurrence of regular islands in an otherwise chaotic sea. This leads to patchiness in the evolution of passive tracer distributions. Also, it is argued and demonstrated numerically that particle trajectory stability is largely controlled by the background flow: trajectory instability, quantified by various measures of the degree of chaos, increases on average with increasing $leftvertmathrm{d}omega/mathrm{d}Irightvert$, where $omega is the angular frequency of the trajectory in the background flow and I is the action.

Summary
Passive tracer patchiness and particle trajectory stability in incompressible two-dimensional flows

 

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