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  Stratification Movie 7
 

Movie 7

An estuary is a 2-layer system with freshwater overlying salt water. Here we see how freshwater behaves when added to each layer.

Download the video (380 KB mp4 file)


Other movies:

  • Movie 1 - Here's what happens when warmer water (green) enters the surface of a lake in winter. The second addition shows that the warm water is buoyant (less dense) than the cold water and therefore rises.
  • Movie 2 - Here's what happens when colder water enters a summer-stratified lake.
  • Movie 3 - Same as movie 2 without the dyed green epilimnion.
  • Movie 4 - See what happens to the epilimnion (mixed layer) and thermocline during a storm. Did the lake mix?
  • Movie 5 - Same as movie 4, but with increased turbulence. See what starts to happen when the class 5 tornado hits.
  • Movie 6 - Shows how stream sediment entering a lake or reservoir deposits its load. Why does some material stay in the upper layer and some crash to the bottom?
  • Movie 7 (above)
  • Movie 8 - Same as movie 7, but here we introduce water that is saltier than the upper freshwater layer. Example: Hurricanes can "throw" huge amounts of saltwater into coastal lakes. What happens to this water and what might its impact be?

 

 


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date last updated: Wednesday October 07 2015