River Study - theory and fieldwork techniques
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  Textbook theory read Waugh III p68-74  
  Downstream velocity changes  
  Hjulstrom's curve  
  Afon Glaslyn map  
  Afon Glaslyn long profile  
     
  Random Project theme generator - work in pairs (or 3s)  
  For each pair spin the fruit machine and see which topic is randomly chosen for them to work on...  
   

Click here for full screen version

 
 

http://classtools.net/widgets/fruit_machine_9/ZThk0.htm

 
     
  Take your randomly generated 'theme' and develop these ...  
 

Hypothesis

Location/limits of field area

Sub-questions

Data to be collected (what, when and where?); Recording Sheet

Equipment needed

Sampling

How to present data

How to analyse data

What we might find

 
     
  Be prepared to feedback your ideas to the class.  
     
  Fieldwork techniques:  
   
     
  http://geographyfieldwork.com/River%20Discharge%20Methodology.htm  
     
  Bedload Trap  
  Making a bedload trap for a small stream:  
  Dig a trench about 25cms deep across the stream (landowner's permission)  
  insert a wooden box into the trench. Ensure that the top of the box does not stick up above the river bed.  
  After a given interval (an hour or a day, depending on the volume of bedload being transported) remove the box from the river and weigh the material.)  
 

 
     
  Pebble Shapes - see http://www.geographyteachingtoday.org.uk/fieldwork/resource/fieldwork-techniques/rivers/sediment-analysis1/   
     
  Pebble Size - measure the middle axis!  
 

 
     
  Suspended sediment  
  Discuss with teacher  
 

 
     
 

 
     
  Solution Load:  
  Discuss with teacher.