1. The Rising Seas… A tale of the deep blue.
By: Mike Crewe

2. Sea Levels Terminology Melting Ice Global Warming The Moon
How Much is it Really Rising?
Effects on Land
Future Damage
What we can do.

3. Jargon
Ice Age – Period of time where large scale Ice sheets exist in the Northern and Southern Hemisphere
Glacier – Big, slow moving, mass of Ice.
Ice Sheet – Large amount of Glacier Ice (>20,000 miles²)
Ice Shelf – Glacier/Ice sheet that flows into the water
Sea Ice – Frozen ocean water
Albedo – an objects ability to diffusely reflect light
King Tide/Spring Tide – Very high tide
Neap Tide – Very low tide

5. Melting Ice
Vast majority of freshwater locked away in Ice Sheets and Glaciers
- Antarctica’s Ice sheets alone contain enough water to raise the sea level 57 meters.
Sea Ice doesn’t raise the sea level
North Pole – Ice surrounded by land
Antarctica – Land Surrounded by ice
- More Ice keeps breaking off and melting, less than is precipitated onto the mainland

6. http://www. greendiary

7. Ekstroem Ice Shelf

8. http://en. wikipedia. org/wiki/Image:Glacier-ice_shelf_interactions

9. Hot things expand? Its true!
Thermal Expansion – As objects absorb heat, they expand
Water Temp (° C)
Percent Volume Increase by 1° C Temp Change. 10
.0088% 20
.0207% 40
.0385%
Water is most dense at 4° C
There’s approximately 50,000,000 cubes km of water in the surface layer of the ocean
If 1 Liter of 20° C was heated 1° C, its volume would increase by .21 mm
Translate that to the whole ocean

10. Tides Caused by the Moon (and Sun) Raise and lower water levels
Spring Tide/Neap Tides combined with raises in sea levels = dangerous
Floods/Draughts land

11. Bay of Fundy

12. Why’s that happen?

13. Raise per Year Ocean rise changes depending on where you are
Average about 1.8mm per year
Can change based on a number of factors
Estimated to reach values of mm or rise over the next century (only the latter by substantial glacier melt)

15. Damage to land Tuvalu and London In the same sinking boat.

16. Look Familiar?

17. Summary Glaciers be meltin, yo
Thermal expansion of water is the leading cause of the sea rise currently
Tides can amplify the effects of raised sea levels
Where would all the people displaced by ruined land and homes go?
Go green!

18. Works Cited
Flannery, T. (2005). The Weather Makers: How We Are Changing the Climate and What it Means for Life on Earth. Canada: HarperCollins.
Nov. 2008
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Nov. 2008
Williams, N New fears on sea-level rise. Current Biology, Vol. 17, Issues 15, R572.