Unit 3: Rivers and coasts - hazards and opportunities offered by coasts

Hazards offered by coasts

Coastal erosion

 

Sources: http://www.mfe.govt.nz/sites/default/files/publications/climate/coastal-hazards-climate-change-guidance-manual/images/ohiwa-split.jpg

https://www.capecodtoday.com/sites/default/files/styles/article_main_image/public/042707-Siasconset-bluff_0.jpg?itok=jPPDcXyP

Environmental Impact : Loss of land.

Economic Impact: Loss of tourist facilities (e.g. caravan sites). 

Social Impact : Residents lose gardens and eventually have to move out of their homes. They get no compensation and no-one will buy them. They have to pay to have their homes demolished as they can’t let them collapse onto the beach below. 

Political Impact : local councilors have to decide if they are going to pay for coastal protection and cliff defenses – or let the coast erode with the loss of roads, farms & villages.

Source: http://slideplayer.com/slide/6027920/

Tropical storms

Source: http://a.files.bbci.co.uk/bam/live/content/ztdh34j/large

Conditions for tropical storms:

• sea temperatures must be over 27°C
• low air pressure
• air spiralling upwards
• large expanse of water
• location between the tropics
• damp, moist air with humidity greater than 60% per cent

Source: http://www.bbc.co.uk/education/guides/zcv7hyc/revision

Source: http://a.files.bbci.co.uk/bam/live/content/zxjkq6f/large

Opportunities offered by coasts

Why do people live near coasts?

• Economic opportunities 
• Communication/transportation 
• Recreation 
• Climatic conditions 

Sources: http://www.worldbank.org/en/topic/environment/brief/oceans

http://dc-cdn.s3-ap-southeast-1.amazonaws.com/dc-Cover-qvcesuighssltuuntenmoumud1-20160217003219.Medi.jpeg

https://assets.digital.cabinet-office.gov.uk/government/uploads/system/uploads/image_data/file/50050/s300_St_Ives_960x640.jpg

https://gnightearth.files.wordpress.com/2014/09/cost.jpg