coastal management- strategies along a stretch of coastline explain how the coastline is divided up...
DESCRIPTION
Can we protect the entire coast of the UK or elsewhere? 1.How do we decide where needs protection? 2.How do we decide what level of protection to give to a place? 3.What happens to places that we don’t protect? 4.Who organises the protection of the coast?TRANSCRIPT
![Page 1: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/1.jpg)
Coastal Management- strategies along a stretch of
coastline•Explain how the coastline is divided up to make management easier.•Describe the methods used to prevent coastal erosion and divide these into traditional and modern types and also hard and soft engineering methods.•Evaluate the efficiency of each method and identify advantages and disadvantages of each method.•Describe the management system in place for a named stretch of the UK Coast
![Page 2: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/2.jpg)
Starter
Risks of rapid coastal erosion in Holderness
![Page 3: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/3.jpg)
Can we protect the entire coast of the UK or elsewhere?
1. How do we decide where needs protection?
2. How do we decide what level of protection to give to a place?
3. What happens to places that we don’t protect?
4. Who organises the protection of the coast?
![Page 4: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/4.jpg)
![Page 5: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/5.jpg)
![Page 6: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/6.jpg)
What methods can we use to protect the coast?
Ref Phillip Allan 240 -242
CLIFF FOOT AND BEACH STRATEGIESTechnique
Nature & Purpose Strengths Weaknesses
Breakwaters offshore
Embankments
Gabions
Groynes
Revetments
Rip Rap (Rock Armour)
Sea walls
CLIFF FACE STRATEGIES
Cliff drainage
Cliff fixing
Cliff regrading
Beach nourishment
Beach re-profiling
Dune regeneration
Developing natural defences of coral reefs
and mangrovesOffshore reefs
![Page 7: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/7.jpg)
Breakwaters Offshore
![Page 8: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/8.jpg)
Embankments
![Page 9: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/9.jpg)
Gabions
![Page 10: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/10.jpg)
Groynes
![Page 11: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/11.jpg)
Revetments
![Page 12: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/12.jpg)
Rip Rap / Sea wall
![Page 13: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/13.jpg)
Straight sea wall
![Page 14: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/14.jpg)
Recurved sea wall
![Page 15: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/15.jpg)
Cliff drainage
![Page 16: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/16.jpg)
Cliff fixing
![Page 17: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/17.jpg)
Cliff regrading
![Page 18: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/18.jpg)
Beach nourishment
![Page 19: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/19.jpg)
Beach re-profiling
![Page 20: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/20.jpg)
Dune regeneration
![Page 21: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/21.jpg)
Developing natural defences of coral reefs and mangroves
![Page 23: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/23.jpg)
![Page 24: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/24.jpg)
![Page 25: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/25.jpg)
Soft and hard engineering• What is the difference between hard
and soft engineering management schemes?
• Does soft engineering appeal simply on cost? Justify?
![Page 26: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/26.jpg)
Integrated coastal zone management (ICZM) & Shoreline Management Plans
(SMP)• This means that rather than sections
of the coast being managed by individual towns or villages, they are managed as a whole
• Realisation that acting in one place affects other places along coastline i.e. Mappleton.
• Due to sediments cells
![Page 27: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/27.jpg)
Sediment CellsRead p194 of Phillip Allan andp194 Pearson and Holdernessphotocopy (Oxford).• Produce a short
paragraph explaining what a sediment cell is.
• Produce a simple sketch map of England showing the 11 sediment cells.
• How is an understanding of sediment cells essential if the principles of shoreline management plans are to work?
![Page 28: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/28.jpg)
Shoreline Management Plans (SMP)
• In a SMP all local interest groups are consulted and provide engineers with background information about that stretch of coast – 4 options considered
• DO NOTHING – i.e. let existing defences collapse • HOLD THE LINE i.e. keep the coastline where it is
by using hard engineering (Sheringham)• ADVANCE THE LINE i.e. build coastal defences out
to sea i.e. artificial breakwaters (Dubai)• RETREAT THE LINE i.e. allow the coast to erode
back to a defined line (South of Mapleton)
![Page 29: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/29.jpg)
SMP• Cost benefit analysis and
environmental impact analysis (EIA) carried out to decide best option
• SMP can be valid for up to 50 years• Unprotected areas eventually erode
inland and protected areas form small headlands – alters shape of coast into series of bays.
![Page 30: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/30.jpg)
Case Study – Coastal defences on the Holderness coast.
• Identify coastal defences in place at three locations along Holderness coast: Withernsea, Mappleton and Flamborough
• Describe how each method works and outline advantages and disadvantages for each technique suggesting where appropriate whether another technique would be better.
• Also use Google maps to find an area of the Holderness coast where no defences are present and to examine why this would be the case.
• Use the sheet provided to study and evaluate the coastal defences in place along the Holderness coast.Ref Oxford 198-201,
![Page 31: Coastal Management- strategies along a stretch of coastline Explain how the coastline is divided up to make management easier. Describe the methods used](https://reader033.vdocuments.us/reader033/viewer/2022051201/5a4d1b667f8b9ab0599b0594/html5/thumbnails/31.jpg)
Plenary • Arguments for and against coastline
retreat?
• Why are sediment cells so important in coastal management?