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List of Figures

  1. Upper mantle discontinuities
  2. Upper mantle composition
  3. Upper mantle velocity models
  4. Model of Gutenberg discontinuity by Gaherty et al. (1999)
  5. Velocity change due to anisotropy change
  6. ScS reverberation phases
  7. Z, R, T and L, Q, T coordinate systems
  8. PKPPKP and PP
  9. SS and PP long-period stacks
  10. YKA location
  11. YKA configuration
  12. Tw~st array configuration
  13. Source locations of YKA dataset
  14. YKA reflection point location
  15. PP Fresnel zone
  16. Source locations of the Tw~st array dataset
  17. Tw~st array reflection point location
  18. Filter effects
  19. frequency-wavenumber analysis: Examples
  20. IASP91 travel time curves
  21. Sliding-window fk-analysis resolution test
  22. fk-analysis slowness resolution test
  23. Sliding-window fk-analysis backazimuth resolution test
  24. Snapshots of sliding-window fk-analysis for real event
  25. Seismogram and vespagram example
  26. PP - P travel times study
  27. Seafloor age in the region studied
  28. Results for shallow reflectors
  29. Vertical cross section for shallow reflections
  30. PP and P$^d$P polarity study
  31. Polarity studies of shallow reflectors
  32. Results for Lehmann discontinuity
  33. Vertical cross section for Lehmann discontinuity
  34. Vertical cross section for intermediate depths
  35. Results for 410 km discontinuity
  36. Vertical cross section for reflections from the 410 km discontinuity
  37. Vertical cross section for reflections from the 410 km discontinuity at the tip of the Hawaiian chain
  38. Vespagram for SS underside reflections
  39. Particle motion for station 5150
  40. Depth variations of shallow discontinuities
  41. 4th-root vespagrams of synthetic seismograms and real data
  42. Laminated models of Lehmann discontinuity
  43. 210 km reflection points near the Kurile subduction zone
  44. Effect of increasing width of a discontinuity
  45. Synthetic seismograms for variations of gradient thickness and impedance contrast
  46. Thickness and velocity jump across the Lehmann discontinuity
  47. Location of 410 reflections near the Kurile subduction zone
  48. Structure of the 410-km discontinuity by Flanagan and Shearer (1999)
  49. Synthetic seismograms for 410-km discontinuity models
  50. Synthetic seismograms for different models of the 660
  51. Grid search for gradient and impedance change at 660


2000-09-05