geography section a case study

• • DATE
27TH FEBRUARY 2010
  • MAGNITUDE
8.8
  • LOCATION 
OFF THE COAST OF CENTRAL CHILE
  • PLATE MARGIN
DESTRUCTIVE
  • PRIMARY EFFECTS
  • 500 DEAD
  • 12,000 INJURED
  • OVER 800,000 PEOPLE AFFECTED
  • COST OF EARTHQUAKE US$30 BILLION
  • SECONDARY EFFECTS
  • TSUNAMI DESTROYED COASTAL TOWNS
  • LANDSLIDES DESTROYED 1500KM OF ROADS
• Typhoon Haiyan


  • Strong winds caused damage to buildings
  • Over 6300 deaths
  • Crops were damaged
  • Over 500000 families were made homeless
  • Nearly $3 billion damage was caused
  • A barge was punctured spilling oil into the sea
• Short-term responses to Typhoon Haiyan

  1. UN appealed for £190 million for emergency aid

  2. World Health Organisation helped manage healthcare workers from around the world

  3. Many countries sent aid including materials and water
• Long-term responses to Typhoon Haiyan

  Focused on rebuilding 560 schools, 30 hospitals and 1500km of road
• Typhoon Haiyan occurred


  November 2013
• Typhoon Haiyan


  • Category 5 storm
  • Wind speeds reached 315km per hour
  • Strongest storm ever recorded at the time
  • Hit land in Eastern Samar
• Magnitude


  7.8 richter scale
• Focus


  15km (very shallow so results were sever shaking)
• Destructive margin
• Immediate responses


  1. Helicopters rescued and delivered supplies to villages cut off by landslides avalanches

  2. Temporary shelters were set up

  3. The red cross provided 225,000 people

  4. 75,000 were unreachable by air due to the mountainous terrain

  5. Sherpas were used to hike relief supplies to remote areas
• Long term responses


  1. August 2015 repairs to Everest base camp and new trekking routes meant climbers returned

  2. Stricter controls on building codes were brought

  3. UN trained individuals in how to maintain and repair irrigation channels damaged by the landslide

  4. This allowed crop production to increase and growing seasons to extend
• Primary effects


  • 8841 deaths
  • 16,800 Injured
  • 1 million displaced
  • Rice seed stored in homes were ruined in rubble
• Secondary effects


  • Tourism was 8.9% of Nepal's GDP, and 1.1 million jobs relied on this industry, however income shrunk and tourists stayed away
  • The earthquake triggered an avalanche on mount Everest, and swept through Everest base camp
  • Food shortage and income loss
  • 225,000 people had to live in tents as their homes were destroyed
• Location: Asia
• • what caused the Somerset floods ?350mm of rain in January- February , lack of dredging , storm in Atlantic
  • What is dredging?Extracting sediment from the river bed so the river channel can hold more water
  • What was a social impact of the Somerset flood?600 homes lost , 16 farms evacuated
  • What was an environmental impact of the Somerset flood?6800 hectares of agricultural land lost and contaminated
  • What was an economical impact of the Somerset flood?£200 million total cost , £1 million lost to businesses