What geoscience tells us about severe Red River floods

708 views
560 views

Published on

Published in: Education, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
708
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
0
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

What geoscience tells us about severe Red River floods

  1. 1. RED RIVER FLOODS
  2. 2. Photograph: dacotahsgirl
  3. 3. Red River
  4. 4. 2009
  5. 5. AP Photo/U.S. Coast Guard, Lt. Brendan Evans
  6. 6. Red River~ 7 miles FARGO
  7. 7. Photograph: Sco Olson/Ge y Images
  8. 8. Photograph: AP Photo/Carolyn Kaster
  9. 9. AP Photo/Carolyn Kaster
  10. 10. Photograph: gfpeck Red River flood obelisk Grand Forks
  11. 11. 1997
  12. 12. Greg Brooks, Geological Survey of Canada
  13. 13. Grand Forks, North Dakota 1997 flood and fire
  14. 14. 1950 Red River flood
  15. 15. AP Photo/The Gaze e, Jonathan D. Woods
  16. 16. What causes severe Red River floods?
  17. 17. 3 main factors
  18. 18. 1 weather
  19. 19. 2 geology
  20. 20. 3 natural history
  21. 21. 1 weather
  22. 22. X
  23. 23. How you make a Red River flood
  24. 24. How you make a Red River floodOct Nov Dec Jan Feb Mar Apr
  25. 25. How you make a Red River floodOct Nov Dec Jan Feb Mar Apr
  26. 26. How you make a Red River floodOct Nov Dec Jan Feb Mar Apr
  27. 27. How you make a Red River floodOct Nov Dec Jan Feb Mar Apr
  28. 28. How you make a Red River floodOct Nov Dec Jan Feb Mar Apr
  29. 29. How you make a Red River floodOct Nov Dec Jan Feb Mar Apr
  30. 30. How you make a Red River floodOct Nov Dec Jan Feb Mar Apr
  31. 31. Photograph: kodoma (home)
  32. 32. Winnipeg Manitoba
  33. 33. Lake Winnipeg
  34. 34. Hudson Bay
  35. 35. Photograph: AP Photo/The Canadian Press, Winnipeg Free Press-Wayne Glowacki
  36. 36. X
  37. 37. chain of events
  38. 38. 2 geology
  39. 39. Lake Agassiz
  40. 40. Photograph: neeravbha
  41. 41. mud
  42. 42. Lake Agassiz
  43. 43. Photograph: Nick Saltmarsh
  44. 44. Photograph: Ma hew Bietz
  45. 45. Photograph: calwest
  46. 46. Red River valley
  47. 47. Photograph: Morningstarphoto
  48. 48. Photograph: woody1778a
  49. 49. Climate history of North America Younger Demise of Laurentide Dryas Ice Sheet 20 16 12 8 4 0 THOUSANDS OF YEARS AGO Final drainage of Lake AgassizLAST GLACIAL MODERN MAXIMUM OBSERVATIONS
  50. 50. what happened before?
  51. 51. 3 natural history
  52. 52. Winnipeg Manitoba
  53. 53. 1812
  54. 54. Red River
  55. 55. 1826
  56. 56. MAY 3The river rose six feet last night perpendicularly, several tents arenow pitched upon the most elevated spots: terror is strongly depictedon every countenance… David Jones Journal
  57. 57. MAY 5On a point of the river above us, four horses and a barn were sweptoff by the force of the ice and the ruins floated past us to–day on thesurface thereof… David Jones Journal
  58. 58. MAY 5The force of [the ice] is inconceivable; the lo iest elm trees arecarried away like the most inconsiderable things. David Jones Journal
  59. 59. “ The forts now stand like a castle of romance in the midst of an ocean of deep contending currents, the water extending for at least a mile behind them, and they are thereby only approachable by boats and canoes.” Francis Heron Hudson Bay Company, 1826St.. George and Rannie, Canadian Water Resources Journal, 2003
  60. 60. 1826 flood 1950 flood
  61. 61. what happened before?
  62. 62. Photograph: S.L.M.
  63. 63. Tree-ring display at elementary schoolPhotograph: Tom Swetnam
  64. 64. “ RINGS IN THE BRANCHES OF SAWED TREES SHOWTHE NUMBER OF YEARS AND, ACCORDING TO THEIR THICKNESS, THE YEARS WHICH WERE MORE OR LESS DRY. ” Leonardo da Vinci
  65. 65. Photograph: Ralph Sievert
  66. 66. Photograph: Ma hew Bietz
  67. 67. Red River ManitobaPhotograph: Greg Brooks
  68. 68. Photograph: Ralph Sievert
  69. 69. 93St.. George and Nielsen, The Holocene, 2003
  70. 70. 93St.. George and Nielsen, The Holocene, 2003
  71. 71. Photo: Erik Nielsen
  72. 72. 95Photo: Erik Nielsen
  73. 73. 350 years of Red River floodsSt. George and Nielsen, The Holocene, 2003
  74. 74. ditches vs. levees
  75. 75. Photograph: JPark99
  76. 76. Winnipeg population: 680,000 River diversion Main channelPhotograph: Greg Brooks
  77. 77. proposed leveePhotograph: City of Fargo
  78. 78. Why don’t people just move?
  79. 79. 1812
  80. 80. 1826
  81. 81. “It is the good God who afflicts me.”
  82. 82. Photograph: AdolfGalland
  83. 83. Photograph: StephenZacharias
  84. 84. people didn’t want to move
  85. 85. Winnipeg Manitoba
  86. 86. Photograph: gfpeck
  87. 87. Greg Brooks, Geological Survey of Canada
  88. 88. What causes severe Red River floods?
  89. 89. 1 weather
  90. 90. 2 geology3 natural history

×