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4.2.2 Impacts on Hydrosphere (Water)
The past impacts of climate change on water are seen through
- the rock records of changing sea levels
- the history of different patterns of circulation of the oceans
- the temperatures of the oceans in the abyssal depths and on the surface.
a. Sea Levels
b. Ocean Temperatures Surface and Abyssal
c. Great Lake Levels and Altered Stream Drainage Patterns
Take a virtual tour of the clues we see today of the retreat of the last glacier (around 12,000 years ago) in the Bronte Creek and Crawford Lake area west of Toronto. About 2 kilometers of ice sat on top of the Niagara Escarpment and melt waters ran – eventually – to Lake Ontario.
Activities are listed in individual sub-sections.