Geography Skills
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What is an anomaly?
 A piece of data which doesn't fit a trend found in the rest of the data
 anomaly in our investigation: Beenleigh (7th site) a velocity of 1.550m/s  the only drop in velocity along long profile
 Anomalies suggest other factors influenced the variable been investigated

What were the sites where we collected primary data?
 Harbourne Head (upper)
 Harbourne Ford (middle)
 Rolster Bridge (lower)

Explain how you responded to risks during the fieldwork investigation
 Carried out risk assessment before going to river
 Identified risks such as trips, slips, falls
 Used the formula 'severity x liklihood = risk'
 Severity was measured on a scale of 15, showing risks ranging from minor to life threatening and the likelyhood on the same scale.
 If the score was above 8 we took steps to mitigate the risk.
 being hit by a vehicle = 5/5 risk and 3/5 likelihood would score 15
 Mitigating steps included looking and listening before crossing road and listening to warnings from teachers and students

Describe one application of ICT skills you used in carrying out your fieldwork and comment on its effectiveness (8)
 We recorded data in the field directly onto waterproof iPads
 This reduced the chance that our data would be mistyped when trying to understand handwritten notes
 Saved us time as data could be immediately uploaded to an excel spreadsheet, so we could instantly analyze it
 Once uploaded our data could be tabulated, the spreadsheet allowed us to calculate figure means of larger samples and directly calculate discharge, crosssectional area and hydraulic radius for us to analyze and interpret
 This saved time and reduced human error in calculation process
 Spreadsheet enabled us to quickly produce a range of graphs
 This allowed us to collect and analyze results within the same day

Describe a method of data collection you used (5)
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Discuss the strengths and weaknesses of a method of data collection you used (8)

Summarize your findings and suggest how this enquiry could be improved
 As the R. Harbourne moved downstream, the velocity increased.
 Initially the velocity 0.66km from the source was 0.139m/s.
 Compare this to the velocity at the last site, 19.2km downstream, measured at 2.282m/s.
 CSA also increased downstream as the bradshaw model suggested it would
 The smallest CSA was at the 1st site = 0.095m^{2}
 The largest CSA was at the last site = 3.727m^{2}
 A spearman's rank test also verified a strong positive corrolation between distance and CSA, with a result of 0.905.
 this is greater than the value of 0.881, at the 1% significance level
 The enquiry we completed could have been improved by more accurately dividing the river into 4 equal parts which we did not do
 this meant we were estimating where to put the velocity impeller and our results weren't as accurate as they could have been
 Improving this would make results more accurate
 another thing would be to find an average wetted perimeter by taking three measurements at every site instead of picking one spot, which may have been inaccurate and not represented the site well

How far did your conclusions match the geographical theory on which your study was based?
state geographical theory which we chose as it was in its natural state (only 8% urbanised) with little management
conclusions were:
 CSA increased from 0.139m^{2} to 3.727m^{2 }
 (with a spearman's rank of 0.905)
 Velocity increased downstream from 0.139m/s to 2.282m/s
 (with a spearman's rank of 0.976)
OVERALL: our conclusions strongly corrolated with the Bradshaw model

In which ways would your investigation be useful to other people?
 Would be useful for:
 other Alevel students as secondary data
 environmental agency, to decide on management schemes
 the fieldwork centre, as a bank of resources for future use
 Land owners along the river, to see if they are at risk of flooding

Drawing upon your findings, explain how your enquiry improved your understanding of your topic area (5)
 Helped to show relationship between distance downstream and velocity and CSA
 Gave a visual links to the Bradshaw model
 Showed the Bradshaw model wasn't always accurate