Define the following terms and give and example of each (10 pts each)

 

permeability

 

hydraulic potential

 

cryostatic pressure

 

effective pressure

 

hydraulic gradient

 

piezometic surface (as relates to a confined aquifer)

 

 

Questions:

 

(20 pts) Explain a situation where water can be trapped on a "level" surface.

 

(20 pts) Contrast the forces acting on a Nye Channel with those action on a R-channel.

 

(20 pts) Identify and justify any channels from the field trip that might reflect sudden glacial dischares. If you feel there are none state why.

 

Optional:

(15 pts) Suggest a way the subglacial drainage can convert from a distributed drainage network to a channel drainage.