WOTN

• What was the aim at Walton-on-the-Naze?

  To investigate the effectiveness of coastal management strategies at WOTN
• What risks were associated with WOTN?

  • slips and trips (rocks and sand will be wet)
  • risks from the sea (particularly on stormy days)
  • slumping cliffs
• What was the primary data collection at WOTN?

  Beach length and angle
• What equipment was used to collect the data for beach length?

  Tape measure
• What equipment was used to collect data for beach angle?

  Clinometer
• What type of sampling was used?

  Systematic sampling (measuring every 5 metres)
• How was the data from WOTN presented?

  • as mapped beach profiles (calculate cross-sectional area)
  • as dispersion graphs
• Data analysis:

  The mean CSA of the unprotected beach was 13.1 but the mean for the protected beach was 28.98.

  Both the range and interquartile range of the protected beach are larger than the unprotected beach as there is greater variation.

  The mean an median show central tendency showing in general the CSA is smaller in the unprotected area.
• Drawbacks of data presentation at WOTN

  • using a triangle to calculate CSA leads to some inaccuracy (could be avoided using trapezium law instead)
• Advantages of data presentation at WOTN

  • visual comparison (both)
  • measures of dispersion get rid of anomalies (dg)
  • show measures of central tendency (dg)
  • easy to do (dg)
• What were the conclusions from WOTN?

  Coastal management is effective at Walton-on-the-Naze. However, a hold-the-line strategy is preventing the onward movement of sediment and contributing to erosion in the unmanaged area.
• What were the limitations to data collection?

  • incoming tide
  • beach end is subjective
  • no ranging poles
  • clinometers are sensitive to movement
• Did the limitations have much of an effect on the fieldwork enquiry?

  There was some effect to results but no effect on the conclusion.