Northwest Glaciology 2004 October 15-...

Contents

1. Slide 1 Northwest Glaciology 2004 October 15-...
2. Slide 2 Slide 2
3. Slide 3 Slide 3
4. Slide 4 Societal impacts of avalanches - lo...
5. Slide 5 Cost of closure of Snoqualmie Pass is ~$750,000/hr
6. Slide 6 Slide 6
7. Slide 7 Slide 7
8. Slide 8 Of interest is: - when will they sta...
9. Slide 9 What happens after snow reaches the surf...
10. Slide 10 Snowpack is layered
11. Slide 11 Layer strength depends on: - density c...
12. Slide 12 Evolution of snow on the ground - grav...
13. Slide 13 Snow deformation on slopes shear as we...
14. Slide 14 Modes of slope failure
15. Slide 15 Avalanche release - force balance: ...
16. Slide 16 Slab avalanches
17. Slide 17 What is happening in the start zones? H...
18. Slide 18 Field measurements: 1. snow stratigrap...
19. Slide 19 Field measurements: 2. measure shear ...
20. Slide 20 Spatial variability of shear strength
21. Slide 21 Emerging picture: slopes contain zones o...
22. Slide 22 Additional unresolved questions: - wh...
23. Slide 23 SNOSS: a zeroth-order model of snow slop...
24. Slide 24 SNOSS: a zeroth-order model of snow slop...
25. Slide 25 Slide 25
26. Slide 26 11 hours
27. Slide 27 16 hours
28. Slide 28 18 hours
29. Slide 29 20 hours
30. Slide 30 22 hours
31. Slide 31 23 hours
32. Slide 32 Forecast precipitation and temperatures ...
33. Slide 33 SNOSS model results: - failure predict...
34. Slide 34 Model results Sept 18, 1996: - failur...
35. Slide 35 Model results: Oct 5, 1998 - minimum s...
36. Slide 36 SNOSS - results are promising however...
37. Slide 37 Snow in motion - how far will avalanch...
38. Slide 38 Snow in motion flow by sliding (withi...
39. Slide 39 PMC simple model: avalanche is represent...
40. Slide 40 Snow in motion: application to avalanche...
41. Slide 41 Avalanche in motion East Homer, Oct 7...
42. Slide 42 Impact pressures at road level Oct 7, 19...
43. Slide 43 Damage ? bridge in Raspberry Path
44. Slide 44 Slide 44
45. Slide 45 Snow clearing at Chinook Pass
46. Slide 46 Mitigation/engineering solutions Avalan...
47. Slide 47 Avalanche atlas for Snoqualmie Pass
48. Slide 48 Mitigation Tunnels, structures or high...
49. Slide 49 Rock wall on west-side of Snoqualmie Pas...
50. Slide 50 Slide 50
51. Slide 51 Mitigation Passive control - road c...
52. Slide 52 Slide 52
53. Slide 53 Mitigation Close road and then do acti...
54. Slide 54 - what is the effect of explosives? - w...
55. Slide 55 Helicopter bombing
56. Slide 56 Using a gun for avalanche control
57. Slide 57 Bomb trams common at Snoqualmie Pass ...
58. Slide 58 Mitigation Fences and barriers Requ...
59. Slide 59 Litigation/mitigation - logging above...
60. Slide 60 Litigation and engineering solutions fol...
61. Slide 61 Slide 61
62. Slide 62 Problem assignment: www.geophys.washi...