Skills

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  • Created by: Liz_E
  • Created on: 14-05-16 09:17
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  • Skills- Glendeterra Beck
    • Location
      • Site 1: 296278     Site 2: 296276     Site 3: 296274
      • 14 miles west of Penrith
      • 4 miles east of Keswick
      • A66 road
      • Northen fells of Lake Distrct
      • Flows into Driwnt lake
    • Advantages of site
      • Serviced by a main road
      • Clear change downstream
      • Field centre
      • Stream order
      • Within travelling distance
      • Trained tutors
    • Disadvantages
      • Couldn't enter site 3
      • Steep and slppy
      • Hard to access for emergency services
      • Cannot measure full channel
      • Other groups working on site may effect reults
      • Difficult weather conditions
    • Aim
      • To use the Bradshaw model to determine how the channel characteristics of the Glendeterra Beck change downstream
    • Hypothesis'
      • Hypothesis 1: "Cross sectional area will increase downstream
      • Hypothesis 2: "Hydraulic radius will increase downstream"
      • Hypothesis 3: "Discharge will increase downstream"
      • Hypothesis 4: "Bedload will become smaller and more rounded downstream"
      • Did they follow?
        • H1
        • H2
        • H3
        • H4
    • Conclusions
      • H1
        • 1.88km=0.228m2 to 2.4km=2.072m2
          • Does fit model, shows clear increase
      • H2
        • 1.92km=0.16 to 2km=0.18
          • Does fit model
      • H3
        • 1.88km= 0.08 cumecs to 2.4km= 1.28 cumecs
          • Does ft model
      • H4
        • Gets nore angular, 55% of rocks were power index 3, 9% were power index 1
          • Doesn't fit model
            • Material from valley may have fallen in or from nearby dry stone walls
      • Improvements
        • Better weather conditions
        • Go on different days
        • Go to a channel with less human influence
        • Get prior training
        • Use more efficient equipment
        • Research opportunities
          • Comparison of other data
          • Why doesn't the bedload fit?
          • Improve data collection
          • Visit other channels
    • Primary data collections
      • Velocity: Held tape measure across channel, one person holding t at each end and measured the channel to be 200m. Took hydrprop and placed it in every 20m (took 10 measurements). Held hydroprop in water and waited for the turbine to reach the end. Timed it and noted it down. Good because we could measure the velocity quickly and it only needed one person to use the hydroprop, however, hydroprop was not very effective and the flow of water did not always move the turbine. An improvement may be to use a electric flowmeter to read the flow more accurately.
      • Depth: Held tape measure at either end of the channel and measured it to be 200m. Took a ruler and placed it in every 20m (took 10 measurements) and noted down the depth. Good because it gave us a sense of the depth of the channel, however, the ruler may bow n fast flowing water giving inaccurate readings, or it may be that bedload go in the way and gave a reading of bedload to top of water level rather than the true depth. An improvement may be to hold the ruler sideways so it doesn't bow, or, use a more sturdy ruler instead.
    • Secondary data collection
      • Couldn't enter site 3, so required the field centre to send data over that had been collected the day before. WE dd not collect it, it may not have been collected the day before and it meant we requires the field centre for data
    • Qualitative data= opinion based e.g. the powers index
    • Quantatve data: numbers and data e.g. depth and velocity

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