Please enable JavaScript.
Coggle requires JavaScript to display documents.
What factors influence coastal land forms at Lulworth Cove? (Data…
What factors influence coastal land forms at Lulworth Cove?
Data collection
Quantitative
Wave count
Purpose
Record wave energy
Primary research
Method
2 minutes counting waves as they broke against the shoreline at each site/
Limitations
Waves can be messy when they break and can come from several directions at once so counting can vary in reliability.
Limited data from just 2 minutes of counting
Count is affected by weather
Analysis
The range of wave counts the 5 sites were small because the weather was calm. The headlands at Durdle Door and Lulworth Cove entrance had the highest counts of 14.4 waves in two minutes and 11.2 waves in two minutes respectively . The two bays at Lulworth Cove and Man 'o' War had the lowest scores of 9.7 and 10.8 respectively.
Qualitative
Ordnance survey
Purpose
Consider any other factors influencing the land forms.
Secondary research
Maps
Purpose
To locate sites and to consider any other factors influencing the land forms.
Secondary research
Geological maps
Purpose
Allowed for annotation of sketches and to see impact of geology on land form.
Secondary research
Analysis
More resistant rock forms headlands which the form stacks and stumps and arches. The less resistant rocks formed coves at their sites. The unusually wide shape of the cove reflect resistant chalk at the back of the cove which is slow to erode with the clay beds seaward that erode more easily.
Annotated field sketch & photographs
Purpose
To describe the land forms and surrounding areas
Primary research
Method
Use observations to sketch land forms & use other research for annotations to find influencing factors on formation.
Limitations
Maps had an aerial view whilst this did not so it's harder to transpose information accurately from one to the other.
Visual data is useful for describing land forms, but this depends on quality of sketch
Secondary research required
Analysis
Durdle door
Stacks, stumps, arches caves
Man 'o' War
Rocks and a bay
Lulworth cove
Cove
Conclusions & Evaluation
Geology is the most influential factor in creating land forms as it influences the speed and direction of erosion. Wave count was highest at the headlands and lower in the more sheltered areas of the bay.
Maps show geology of area is from reliable source and does not change, so it can be accurately applied. Wave energy will vary due to weather so more visits to the site would give a better representation. Further secondary research would allow for further exploration of the wave energy over time.
Premise
Location
Lulworth cove is an area off the south coast in the county of Dorset. It is adjacent to the English Channel, east of Weymouth and north-east of the Isle of Portland. The strech of coastline includes Lulworth Cove to the east,
Reason
The coast at Lulworth Cove has a range of erosional and depositional features. Access to the sea allows for date collection on wave.
Risk assessment
Falling off cliff
Reducing risk
Staying well away from cliff edge and stick to footpaths. Remain behind cliff fences.
Risk of being separated from group
Reducing risk
Stay with group. Have a safety buddy. Stay alert and listen to instructions.
Tripping or falling
Reducing risk
Wear suitable footwear. Look where you are going. Avoid distactions.