# Flow Coherence: Distinguishing Cause from Effect

Conference paper

First Online:

## Abstract

The geodesic transport theory unveils the especial fluid trajectory sets, referred to as Lagrangian Coherent Structures (LCS), that cause a flow to organize into ordered patterns. This is illustrated through the analysis of an oceanic flow dataset and contrasted with the tendency of a widely used flow diagnostic to carry coherence imprints as an effect of the influence of LCS on neighboring fluid trajectories.

## Keywords

Material Line Lagrangian Coherent Structure Hyperbolic Invariant Manifold Probabilistic Coherence Stationary Curf## Notes

### Acknowledgments

The altimeter dataset is distributed by AVISO (http://www.aviso.oceanobs.com). Work supported by a BP/The Gulf of Mexico Research Initiative grant; NSF grant CMG0825547; and NASA grant NX10AE99G.

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