Deciphering Ice Dynamics - by Reinhard Drews & colleagues

Transcript

1. 17.09.2014 InBev-Baillet Latour R. Drews(1), K. Matsuoka(2), S. Berger(1), D. Callens (1), L. Favier (1), F.Pattyn (1) and the IPF Team (1) Laboratoire de Glaciologie, Brussels, Belgium (2) Norwegian Polar Institute, Tromsoe, Norway Deciphering Ice Dynamics
2. 17.09.2014 InBev-Baillet Latour What is ice dynamics ?
3. 17.09.2014 InBev-Baillet Latour What is ice dynamics ? [R. Drews]
4. 17.09.2014 InBev-Baillet Latour What is ice dynamics ? [R. Drews]
5. 17.09.2014 InBev-Baillet Latour What is ice dynamics ? [R. Drews]
6. 17.09.2014 InBev-Baillet Latour What is ice dynamics ? [R. Drews]
7. 17.09.2014 InBev-Baillet Latour What is ice dynamics ? [R. Drews]
8. 17.09.2014 InBev-Baillet Latour What is ice dynamics ? [R. Drews]
9. 17.09.2014 InBev-Baillet Latour What is ice dynamics ? [R. Drews]
10. 17.09.2014 InBev-Baillet Latour What is ice dynamics ? [R. Drews]
11. 17.09.2014 InBev-Baillet Latour What is ice dynamics ? [R. Drews]
12. 17.09.2014 InBev-Baillet Latour Roi Baudoin Ice Shelf,Antarctica Pinning Point 1 1 2
13. 17.09.2014 InBev-Baillet Latour Roi Baudoin Ice Shelf, Antarctica Palsar, 2012
14. 17.09.2014 InBev-Baillet Latour Across-Flow: sub ice-shelf channeling Landsat
15. 17.09.2014 InBev-Baillet Latour Across-Flow: sub ice-shelf channeling [L.Favier]
16. 17.09.2014 InBev-Baillet Latour Across-Flow: sub ice-shelf channeling [L.Favier]
17. 17.09.2014 InBev-Baillet Latour Across-Flow: sub ice-shelf channeling [L.Favier]
18. 17.09.2014 InBev-Baillet Latour At the station [L.Favier]
19. 17.09.2014 InBev-Baillet Latour At the station [L.Favier]
20. 17.09.2014 InBev-Baillet Latour In the field
21. 17.09.2014 InBev-Baillet Latour In the field
22. 17.09.2014 InBev-Baillet Latour Radar & GPS Measurements Landsat
23. 17.09.2014 InBev-Baillet Latour Radar & GPS Measurements
24. 17.09.2014 InBev-Baillet Latour Radar & GPS Measurements
25. 17.09.2014 InBev-Baillet Latour Along-Flow towards Pinning Point 10 km 200 ma-1 Marine Ice ?
26. 17.09.2014 InBev-Baillet Latour Ice Risle ~ 8 ma-1
27. 17.09.2014 InBev-Baillet Latour Strain Rates ALOS – PALSAR Berger, pers. comm., 2014
28. 17.09.2014 InBev-Baillet Latour Radar & GPS Measurements
29. 17.09.2014 InBev-Baillet Latour Across-Flow: sub ice-shelf channeling 4 km Marine Ice ?
30. 17.09.2014 InBev-Baillet Latour Across-Flow: sub ice-shelf channeling 4 km Depth: 30 m
31. 17.09.2014 InBev-Baillet Latour Marine ice Marine Ice > 40 m Marine Ice < 40 m A. Gossart, Master's Thesis, 2014
32. 17.09.2014 InBev-Baillet Latour Results for marine ice Marine Ice > 40 m Marine Ice < 40 m
33. 17.09.2014 InBev-Baillet Latour Marine / Meteoric Ice in Channels 3 m ~ 10 H :assume hydrostatic eq. in center
34. 17.09.2014 InBev-Baillet Latour Marine / Meteoric Ice in Channels 3 m ~ 10 H :assume hydrostatic eq. in center
35. 17.09.2014 InBev-Baillet Latour Marine / Meteoric Ice in Channels
36. 17.09.2014 InBev-Baillet Latour Marine / Meteoric Ice in Channels
37. 17.09.2014 InBev-Baillet Latour Marine / Meteoric Ice in Channels
38. 17.09.2014 InBev-Baillet Latour Marine / Meteoric Ice in Channels
39. 17.09.2014 InBev-Baillet Latour Marine / Meteoric Ice in Channels
40. 17.09.2014 InBev-Baillet Latour Marine / Meteoric Ice in Channels
41. 17.09.2014 InBev-Baillet Latour Marine / Meteoric Ice in Channels
42. 17.09.2014 InBev-Baillet Latour Marine / Meteoric Ice in Channels
43. 17.09.2014 InBev-Baillet Latour Marine / Meteoric Ice in Channels
44. 17.09.2014 InBev-Baillet Latour Marine / Meteoric Ice in Channels
45. 17.09.2014 InBev-Baillet Latour Marine / Meteoric Ice in Channels
46. 17.09.2014 InBev-Baillet Latour Marine / Meteoric Ice in Channels
47. 17.09.2014 InBev-Baillet Latour Numerical Modeling Elmer/Ice animated gif 1/2
48. 17.09.2014 InBev-Baillet Latour Conclusions
49. 17.09.2014 InBev-Baillet Latour Conclusion (1) The Pinning Point on the RBIs is very sticky; (2) The Pinning Point's influences goes up to the grounding line (3) The RBIS exhibits a number of basal channels which indicate: – ice thickness changes by more than 50% over a few kilometers – channel amplitudes must be linked to a vivid ice—ocean interaction – basal mass balance is highly variable across the channels (4) The ice-shelf rigidity may change on short horizontal scales with: – Marine ice – Basal channels – Surface/bottom crevassing.
50. 17.09.2014 InBev-Baillet Latour Conclusion
51. 17.09.2014 InBev-Baillet Latour Shearing across Channels
52. 17.09.2014 InBev-Baillet Latour Shearing across Channels
53. 17.09.2014 InBev-Baillet Latour Shearing across Channels