Monday, April 18, 2016

Unit 3: Rivers and coasts - managing impacts of coastal erosion

Groyne

Source: https://upload.wikimedia.org/wikipedia/commons/a/aa/%22A%22_frame_groyne_-_geograph.org.uk_-_792208.jpg

Stop longshore drift What are they designed to do? Further down the coast this may mean that beaches are starved of sand a... 
Source: http://www.slideshare.net/ajp/coastal-management-holderness-ap

Sea wall

Source: http://happisburghproject.weebly.com/uploads/1/0/7/1/10710268/2111855_orig.jpg
Expensive at £5,000/m  Designed to stop erosion, but what landforms would that prevent being created? Would you rather go ...
Source: http://www.slideshare.net/ajp/coastal-management-holderness-ap

Rock armor

Source: http://www.channelcoast.org/southeast/programme_design/defence_type/images/image046.jpg
5) Rock armour or Rip Rap Relatively cheap £1,000/m, but considered environmentally ugly When resting on sand and shingle ...
Source: http://www.slideshare.net/ajp/coastal-management-holderness-ap

Beach replenishment

Source: http://draimar.com/images/made/images/projects/100_0660_800_600.JPG
Source: http://www.pevensey-bay.co.uk/recharge_2_3085837912.jpg

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