What factors influence coastal land forms at Lulworth Cove? (Data…
What factors influence coastal land forms at Lulworth Cove?
Record wave energy
2 minutes counting waves as they broke against the shoreline at each site/
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
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.
Consider any other factors influencing the land forms.
To locate sites and to consider any other factors influencing the land forms.
Allowed for annotation of sketches and to see impact of geology on land form.
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
To describe the land forms and surrounding areas
Use observations to sketch land forms & use other research for annotations to find influencing factors on formation.
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
Stacks, stumps, arches caves
Man 'o' War
Rocks and a bay
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.
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,
The coast at Lulworth Cove has a range of erosional and depositional features. Access to the sea allows for date collection on wave.
Falling off cliff
Staying well away from cliff edge and stick to footpaths. Remain behind cliff fences.
Risk of being separated from group
Stay with group. Have a safety buddy. Stay alert and listen to instructions.
Tripping or falling
Wear suitable footwear. Look where you are going. Avoid distactions.