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River Study

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AS Skills

AS Skills

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Transcript

  • 1.  
  • 2. 1
    • How would you investigate the following hypothesis?
    • Riffle and pool sequence can be identified in St John’s Beck, north of Thilmere, at Bridge End
  • 3. 2
    • Calculate the wetted perimeter at each of the sample sites on St John’s beck
  • 4. 3
    • Present the data for gradient of the river at each of the sample sites. What does it show?
  • 5. 3
    • Choose an appropriate technique to present the data for bed load size at each of the sample sites
  • 6. 4
    • Use Spearman’s rank correlation coefficient to test the relationship between average bedload size & distance downstream
  • 7. 5
    • Use proportional symbols & a map to show changes in bedload size at the different sites
  • 8. 6
    • Calculate mean discharge at each of the sites
  • 9. 7
    • Select appropriate techniques to compare bankfull cross sections & wetted cross sections, both statistically & graphically.
  • 10. 8
    • How does velocity change with gradient?
    • How would you examine this question? Select the appropriate data & present it in a suitable style.
  • 11. 9
    • Present the data that show bed roughness using both a graphical & cartographic representation
  • 12. 10 Annotate this picture to accompany an investigation of channel shape. Select & present the appropriate data.
  • 13. 11 How & why does channel depth vary? What hypothesis could you test & how would you test the hypothesis? Include annotation on this photograph.
  • 14. 12
    • Produce a detailed risk assessment (include annotated photograph(s) or diagrams) for a river study on St John’s Beck.
  • 15. 13
    • Is there a relationship between bed load size & bed load shape? Investigate!
  • 16. 14
  • 17. 15
    • Apply Manning’s equation to the study. What do the results give?
    • Use this website to calculate Manning’s equation
    • http://www.lmnoeng.com/manning.htm
  • 18. 16
    • Calculate mean velocity for each site & present the data in a SPATIAL form (i.e. NOT a graph!)
  • 19. 17
    • Calculate & present the Hydraulic Radius for each sample site. What does it show?
  • 20. 18 Compare bankfull & wetted cross sections. How might you use this information?
  • 21. 19
    • Examine the relationship between discharge & bedload size
  • 22. 20
    • Use chi-squared to examine the relationship between the shape & size of bedload
  • 23. 21
    • What problems were experienced during data collection on St.John’s Beck. How could the data collection have been improved?