Familiar fieldwork - physical Flashcards
(12 cards)
Title
To investigate how the River Tillingbourne changes downstream
Geographical theory
Bradshaw model
Hypothesis for the investigation (prediction)
River velocity will increase downstream
Channel width and depth will increase downstream
Type of sampling used for investigation
Stratified for choice of site
Systematic across the site for depth of the river
Primary data
Measuring velocity
Measuring width and depth of channel
Field sketch
Secondary data
Land use OS map
FSC data (field studies council)
Environmental agency
Risks
- Tics from long grass - wear long trousers
- Weils disease/slipping/drowning - use hand sanitiser, don’t drink water, no pushing, cover open wounds
- Sunburn - wear suncream
Conclusion
Channel depth and velocity increase as you move downstream. Width however, whilst greater from site 1 (Crossways Farm) to 3 (Gomshall), it has an anomaly at site 2 (Abinger Hammer) due to human influences
Evaluation
- Data collected allowed us to draw a conclusion and reflected what we expected to find from the Bradshaw model
- The need to survey more sites including a number not impacted by human influence
- Our data would be more reliable if we took it at different times of the year (discharge varies) and if we measured depth at more frequent intervals (10 measures per transect rather than 5)
- Take more readings, repeat velocity at sides and middle of channel rather than just the middle
- Use a hydroprop for velocity rather than a cork
- Reconsider choice of sites to avoid managed sections
Data presentation for width and depth
Cross section - visual representation of data
Data presentation for mean velocity at each site
Bar graph - allows comparison between sites and shows frequency for different categories
Data presentation of site
Field sketch - explains results (human activity)
Annotated photo - present qualitative data showing key features of the site to explain results (human activity)
