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The Rottnest Island wake: observed using ships, gliders, satellites and computers

The Rottnest Island wake: observed using ships, gliders, satellites and computers. Charitha Pattiaratchi School of Environmental Systems Engineering The University of Western Australia. Introduction Island Wakes: theory Rottnest Wake: Field Data Ship (1995, 1996) Glider Data (2003)

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The Rottnest Island wake: observed using ships, gliders, satellites and computers

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  1. The Rottnest Island wake: observed using ships, gliders, satellites and computers Charitha Pattiaratchi School of Environmental Systems Engineering The University of Western Australia

  2. Introduction Island Wakes: theory Rottnest Wake: Field Data Ship (1995, 1996) Glider Data (2003) Rottnest Wake: Numerical Modelling Rottnest Wake: Southern Surveyor 2003 Summary Outline Acknowledgments Majid Alaee Mun Woo Ben Hollings

  3. Rottnest Island Wake

  4. Rottnest Island Wake

  5. Rottnest Island Wake

  6. Rottnest Island Wake

  7. Rottnest Island Wake

  8. Rottnest Island Wake

  9. Island wake parameter P<<1:quasi potential flow within the wake (friction dominates) P=O(1): stable wake P>1: instabilities occur in the wake P>>1 eddy shedding (friction negligible)

  10. Rattray Island Wake

  11. Santa Catalina Island Wake

  12. Flow structure in island wake

  13. Island wake parameter P<<1:quasi potential flow within the wake (friction dominates) P=O(1): stable wake P>1: instabilities occur in the wake P>>1 eddy shedding (friction negligible)

  14. Flow past an Island: eddy shedding

  15. Island Wakes off Sicily

  16. Island wake parameter P<<1:quasi potential flow within the wake (friction dominates) P=O(1): stable wake P>1: instabilities occur in the wake P>>1 eddy shedding (friction negligible)

  17. Flow past an Island: attached flow

  18. Flow past an idealised Island

  19. Flow past Rottnest Island: ADCP data 1994 G. Cresswell

  20. Enhanced productivity to the north of Rottnest Island

  21. Surface Currents measured by shipborne ADCP: Dec 1994

  22. Rottnest Island: setting

  23. Rottnest Island: setting

  24. Rottnest Island: setting

  25. Rottnest Island: setting

  26. CTD Data

  27. Temperature distribution to the north of Rottnest Island

  28. Glider Path: 22 days, 486 km, 2420 profiles

  29. Depth-mean currents from glider

  30. Glider cross-section: Sepia depression

  31. Glider cross-section: Temperature

  32. Glider cross-section: Temperature

  33. Glider cross-section: Density

  34. Glider cross-section: Backscatter

  35. Glider cross-section: Temperature

  36. Glider cross-section: Density

  37. Rottnest Island wake: numerical modelling

  38. Rottnest Island wake: Surface currents

  39. Flow past Rottnest Island: surface

  40. Flow past Rottnest Island: near-bed

  41. Upwelling regions

  42. Upwelling regions

  43. Flow past Rottnest Island: near-bed

  44. Secondary Flow past Rottnest Island

  45. Flow past an idealised Island

  46. Numerical modelling of flow past an idealised Island

  47. Upwelling regions

  48. Topographic configurations

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