River Study

4,565 views
4,355 views

Published on

AS Skills

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
4,565
On SlideShare
0
From Embeds
0
Number of Embeds
59
Actions
Shares
0
Downloads
25
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

River Study

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

×