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Environmental Fluid Mechanics

, Volume 17, Issue 3, pp 473–483 | Cite as

Impact of windage on ocean surface Lagrangian coherent structures

  • Michael R. Allshouse
  • Gregory N. Ivey
  • Ryan J. Lowe
  • Nicole L. Jones
  • C. J. Beegle-Krause
  • Jiangtao Xu
  • Thomas Peacock
Original Article

Abstract

Windage, the additional direct, wind-induced drift of material floating at the free surface of the ocean, plays a crucial role in the surface transport of biological and contaminant material. Lagrangian coherent structures (LCS) uncover the hidden organizing structures that underlie material transport by fluid flows. Despite numerous studies in which LCS ideas have been applied to ocean surface transport scenarios, such as oil spills, debris fields and biological material, there has been no consideration of the influence of windage on LCS. Here we investigate and demonstrate the impact of windage on ocean surface LCS via a case study of the ocean surrounding the UNESCO World Heritage Ningaloo coral reef coast in Western Australia. We demonstrate that the inclusion of windage is necessary when applying LCS to the study of surface transport of any floating material in the ocean.

Keywords

Lagrangian coherent structures Windage Ningaloo 

Notes

Acknowledgements

Simulation data and LCS codes are available upon request to MRA. TP and MRA acknowledge funding support from ONR grant N000141210665. Additional support was provided by the MIT MISTI Global Fund and a UWA Gledden Fellowship. GI, NJ and RL acknowledge support from an Australian Research Council (ARC) Discovery Project Grant (DP120103036) and RJ from an ARC Future Fellowship Grant (FT110100201).

Supplementary material

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Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  • Michael R. Allshouse
    • 1
  • Gregory N. Ivey
    • 2
  • Ryan J. Lowe
    • 3
  • Nicole L. Jones
    • 2
  • C. J. Beegle-Krause
    • 4
  • Jiangtao Xu
    • 2
  • Thomas Peacock
    • 1
  1. 1.ENDLab, Department of Mechanical EngineeringMassachusetts Institute of TechnologyCambridgeUSA
  2. 2.School of Civil, Environmental and Mining Engineering & Oceans InstituteUniversity of Western AustraliaCrawleyAustralia
  3. 3.School of Earth and Environment & Oceans InstituteUniversity of Western AustraliaCrawleyAustralia
  4. 4.Materials and Chemistry/Environmental ModelingSINTEFTrondheimNorway

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