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Global Climate Change

  1. Where has the oldest and youngest ice ages
    young wisconsin old nebraska
  2. the sediment on the ocean floor is mostly what?
    skeletal material from plankton
  3. Milkanovich theory of climate change
    • eccentricity
    • obliquitiy
    • precession
  4. eccentricity
    orbit not perfectly circular, distance between earth and sun varies 100kyears
  5. obliquity
    tilt 23.5 degrees goes back and forth 2 degrees 41kyears
  6. precession
    earth's axis wobbles, sometimes oriented towards sun sometimes away, 21 kyears
  7. what are the levels in CO2 in the glacial atmospher?
    lower
  8. who proposed iron fertilization hypothesis?
    john martin
  9. what are possible mechanisms for glacial periods
    ocean temperature changes, alkalinity cahnges, nutrient changes
  10. climate change is more
    abrupt than smooth
Author
sloos
ID
2058
Card Set
Global Climate Change
Description
Global Climate Change
Updated

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