Geography: Natural Case Studies

Coasts- Happisburgh, Walton On The Naze

1997

  • Groynes= Stop LSD South to north
  • Regrading
  • Recurved Seawall=Protect soft London clay

1998

  • Breakwater= 300 tonnes of Leicester granite around the Tower =£167000

1999

  • Beach Replenishment= additional sand from Harwich Harbour
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Rivers- River Nene, Northhampton

1998=FLOOD

2002

  • Embankment= 10m high in Weedon

2003

  • Warning System improved = Far Corron residents 2 hour notice

2007

  • Washland= stores 1.2million m^3 water in Upton
  • Embankment= 6m high on A45
  • Flood Walls= 4m high at Foot Meadow (protect railway)
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Tectonics- Haiti, Earthquake

12 Jan 2010= Magnitude 7= Caribbean+NA plate= 25km west Port-Au-Prince

Social

  • 200,000 dead
  • 1.5 million homeless
  • 3 million affected

Environment/Economic

  • 30,000 buildings collapsed
  • 1 in 3 buildings destroyed
  • Farmland subducted
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Watery World- Three Gorges Dam

Reasons

  • Control flooding
  • Impove navigation/shipping
  • Generate electricity

Negatives

  • 1.4 million people displaced from their homes
  • Landslides=54 people dead
  • Yangtze Dolphin=Extinct

Positives

  • Protects 1,500,000 hectares of farmland
  • Shipping has improved by 40 billion tonnes a year
  • Generates electricity equivalent to 18 power stations
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Watery World- Tigris Euphrates

GAP

  • Regulates flow of Tigris and Euphrates
  • $32 billion project to build 21 dams

Problems

  • Turkey "the flow of water is more constant"
    • Syria= 30BCM/Y--->16BCM/Y
    • Iraq= 6BCM/Y--->5BCM/Y
  • Quality downstream decreases due to chemicals for pesticides/fertilisers
  • Iraq=74% of irrigated areas suffer from salinity
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