Physical impact of coastal management 5. What is the impact on the hard defences on longshore drift and the rate of deposition? Rip-rap or rock armour is often used as a technique of coastal defence. But there have been critics, such as the local MP, who has called the project ” Disney for ducks ” What could you investigate by fieldwork? No dodgy Bermuda shorts though!
How do these hard defences affect the beach sediment system? Sometimes the sea may erode through to the top of the headland following a large crack. Shoreline management plans are an essential source to find our more about about erosion and other coastal processes in your chosen length of coastline. Bays and Headlands Bays and headlands are formed in a very similar way to rapids rivers topic. The sieves are arranged in decreasing mesh diameter with the largest at the top.
As the process continues the cliff starts to move backwards retreat.
The backshore is the area above the normal high tide level, the foreshore is the area in between normal high and low tide and offshore is the area below the normal low tide.
These are examples of sped up videos that are over dubbed with narrative showing the changes to the river features on the River Garonne. Add some colour to bring the diagram to life. Each reading is taken from from break of slope to break of slope.
To clarify what we learnt last lesson, watch from minutes on the coasts to the right. Bi-polar analysis Questionnaires Cost-benefit analysis. Over the Horizon Migration to the EU.
Geography- Whistable Coast Project
What do you think are the most important reasons for protecting the coast at Tywyn? Land use type Tally Score High-status retail e. The couursework that take place are erosion, transportation and deposition.
Use rules or calipers to measure the a, b and c axes of each pebble. Distance away from the sea defence and height above it should also be taken in to account when surveying land use.
Secondary data sources 1. Read more at the Institution of Civil Engineers website.
Coastal Management – FSC Geography Fieldwork
After 20 minutes find as many pebbles as you can, and measure how far each has moved from the start point. The distance between the crest and the trough. If this happens a blowhole is created. But there have been critics, such as the local MP, who has called the project ” Disney for ducks ” What could you investigate by fieldwork?
Samples of fine sediments clay,silt and sand will need to be taken from the beach to the lab.
Given its importance we need to carefully consider how we manage the coastline to ensure geohraphy we can make use of its resources while still preserving its natural beauty and processes. After 20 minutes, you may find that some of the pebbles will have disappeared from the beach or moved in a different direction to the others.
Use a stone card to measure the minimum radius of curvature. The number of waves per minute.
When did the sediment balance change from accretion to erosion? The a-axis is the longest axis The b-axis is the widest axis at right angles to the a-axis.
The table below shows how the height of the defence can be categorised. Sometimes the sea may erode through to the top of the headland following a large crack. Rip-rap or rock armour is often used as a technique of coastal defence. This may lead to areas of land being lost to the sea Hold the line Keep the coastline at its present position. Both images above credit to the most excellent internetgeography. Hydraulic pressure will be the main type of erosion.
Take a screen shot of part of the video, crop and annotate with key features. Make notes under the following headings please: Risk and vulnerability 9.