headland bay beach and headland control

1. headland bay beach and headland control Coastal Engineering, 57, 76-240, 2010. H. K. Chang

2. Bay shape 台東金樽海岸:

3. Bay shape 宜蘭內埤海岸:

4. Bay shape 廣東雙月灣海岸:

5. Definition

6. Definition

7. Empirical function • Coastal Engineering, 57, 124-131, 2010 • Yasso (1965)— • Logarithmic Spiral • bay equation

8. Empirical function • Hsu and Evans (1989)– Parabolic bay equation 27cases of 14 prototypes and 13 model bays

9. Parabolic bay equation

10. Parabolic bay equation Gozanles and Medina (1997)–

11. Empirical function • Noreno and Kraus (1999)--Hyperbolic tangent bay equation

12. Definition

13. Examples

14. Examples

15. Examples

16. Examples

17. Examples

18. Uncertainty Coastal Engineering, 57, 132-151-, 2010. 22 volunteers Bins m=5.4

19. Uncertainty Standard deviation:

20. Uncertainty Coastal Engineering, 57, 132-151-, 2010.

21. Uncertainty

22. Uncertainty

23. Uncertainty

24. Further investigation Coastal Engineering, 57, 194-,202 2010. • Tan and Chiew (1994) • β/θ=1,R=R0 • Derivative R w.r.t. β/θ→slope (tan β)

25. Further investigation Coastal Engineering, 57, 213-,226, 2010.

26. Further investigation EMPBAY:

27. Further investigation Coastal Engineering, 57, 227-,240, 2010.

28. Further investigation

29. Further investigation

30. Further investigation

31. Further investigation

32. Further investigation

33. Further investigation Coastal Engineering, 57, 194-,202 2010.

34. Further investigation Coastal Engineering, 57, 194-,202 2010.