- Pebbles decrease in size with increasing distance from the shoreline to the cliff.
This is because big pebbles are being deposited before smaller pebbles due to the action of the waves. There are two types of waves, constructive and destructive waves. Constructive waves are when the swash has more energy than the backwash. Destructive waves are when the backwash has more energy than the swash, therefore material is being destroyed. The swash deposits heavy material close to the water’s edge as it loses energy. The heavy material consists of bigger pebbles. The backwash water returns to the sea under the influence of gravity. The movement of weathered material from the cliffs by the pull of gravity is called mass movement. The material from the cliffs may be removed by erosion. How fast and how suddenly the movement takes place is determined by the amount of rainfall. Mass movement is faster in wet weather. Debris soaks up rainwater, becoming heavier, so the pull of gravity is more. Also, if water cannot pass through the rock below the debris, it flows down the rock surface helping movement of the debris.
Human
- Lulworth will be a honey pot site as there will be more tourists than residents in the area.
A honey pot site is an area of attractive scenery, or historic interest to which tourists swarm in large numbers. This is because Lulworth Cove is a popular tourist destination and receives over 750 000 visitors per year. Most tourists visit the area because of its geology, scenery, nature, and its facilities for the people, its safe beaches; its easy parking there is approximately 1000 inhabitants in the area.
- Lulworth will have a large sphere of influence.
Lulworth is a very popular area and therefore many people will be attracted to it. The tourists will be from different areas and this hypothesis is investigating the different parts of the country the tourists of Lulworth Cove come from. Lulworth will have a large sphere of influence because it is reasonably accessible and people from different parts of the country come to visit its geology, scenery, nature, use its facilities and its safe beaches.
- The tourists visiting the area will be a variety of ages.
This is because there are facilities for children as well as the elderly. The time of the year that the questions were asked will have an affect as there will be more elderly people than young people because the young people will be in school.
Hypotheses:
Physical
- Longshore drift will occur in direction of the prevailing wind.
This was proved by throwing an orange into the surf zone for exactly 5 minutes. The direction and distance it moved was observed. This was repeated 3 times, on order to calculate the average of the three distances, in order to get accurate results. An orange was used to test this hypothesis as it is easy to see and is biodegradable. To prove the above hypothesis the data that was collected was recorded in a table shown below:
- The height of the beach should increase towards Durdle Door.
This will be tested by measuring the beach profile using the ranging poles, a metre ruler and a spirit level. A ranging pole was placed at the edge of the beach near the shoreline and the other one a metre away up the beach. The metre rule was placed between the poles keeping it absolutely level by means of the spirit level. To prove the above hypothesis the data that was collected was recorded in a table shown below:
- Pebbles decrease in size from west to east and become rounder as a result of longshore drift.
To measure the pebble length, each group will place a quadrat against the higher of the two ranging poles and the long axes of 5 randomly chosen pebbles were measured in centimetres for accurate results. The pebble roundness was calculated by using a Cailleux Roundness Index. The average pebble length was then calculated by each group and the compared. To prove the above hypothesis the data that was collected was recorded in a table shown below:
- Pebbles decrease in size with increasing distance from the shoreline to the cliff.
This was proved by each group measuring the length of the pebbles as they went away from the shoreline.
To prove the above hypothesis the data that was collected was recorded in a table shown below.
Human
- Lulworth will be a honey pot site as there will be more tourists than residents in the area.
This was proved by asking the people in the Lulworth area a questionnaire. The question from the questionnaire that is relevant to the above hypothesis is:
Are you a tourist or a local?
Tourists Local
- Lulworth will have a large sphere of influence.
This was tested by doing a survey on the tax discs of each car to see where the car came from.
- The tourists visiting the area will be a variety of ages.
This was proved by asking the people in the Lulworth area a questionnaire.
Hypotheses:
Physical
-
Long shore drift will occur in direction of the prevailing wind. (SW). The results for this hypothesis are useful as it will show whether longshore drift occurs or not and which direction it occurs in. This will be due to the wave action.
-
The height of the beach should increase towards Durdle Door. The results for this hypothesis are useful as it will show the effect of longshore drift on the shape of the beach. It will show if longshore drift occurs and the changes in the height of the beach.
-
Pebbles decrease in size from west to east and become rounder as a result of long shore drift. The results for this hypothesis are useful as they will show the effect of transportation on the pebble size. It will also show if the pebbles are affected by attrition or not. Comparisons will be made between each group to show the changes in length and size.
-
Pebbles decrease in size with increasing distance from the shoreline to the cliff. The results for this hypothesis are useful as it will show effect of longshore drift on the waves and it will show where attrition occurs.
Human
-
Lulworth will be a honey pot site as there will be more tourists than residents in the area. The results for this hypothesis are useful as the will show if the area is tourists orientated.
-
Lulworth Cove will have a large sphere of influence. The results for this hypothesis are useful as they will show how popular and accessible Lulworth cove is. If Lulworth Cove is a honey pot site, it is expected that there will be a large number of tourists. This method is useful as it provides a good method of collecting the data efficiently without troubling the tourists by asking them questions.
-
The tourists visiting the area will be a variety of ages. The results for this hypothesis are useful as they will prove that Lulworth Cove has facilities for all ages. This is useful as the question allowed the data to be collected in different categories. Therefore, during the interview, this question will not need to be asked as the categories are broad enough to minimise errors.
To help me complete my analysis, I have researched and used secondary data
OS Maps
These are helpful as they show