11.5.1

Coping With Earthquakes & Volcanoes

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Reducing the Impact of Tectonic Hazards

It is difficult to reduce the impact of tectonic hazards. Scientists cannot predict when earthquakes will happen until a few seconds before they happen. Monitoring and prediction are two ways to reduce the impact.

Monitoring

Monitoring

  • Using seismometers to detect movements in the Earth can help to predict tectonic hazards, but they only give a few minutes of warning.
  • Before volcanic eruptions, small earthquakes, oozing magma or sulfur gas emissions can be warning signs. Keeping watch for any of these things can help to save lives.
  • Monitoring volcanoes is easier than monitoring earthquakes.
Prediction

Prediction

  • It is very difficult to reliably predict earthquakes.
  • Looking at tectonic plate boundaries helps us know where earthquakes are likely to happen.

Reducing the Impact of Tectonic Hazards

Protection and planning are two more ways to reduce the potential impact of tectonic hazards.

Protection in high income countries

Protection in high income countries

  • Protection is usually better for reducing the impact of tectonic hazards in high-income countries.
  • High-income countries often invest in earthquake-proof buildings. Using cross-bracing, automatic window shutters, fire-resistant materials, and shock absorbers can help reduce damage.
    • E.g. the Taipei 101 building has a huge mass damper that reduces the strain on the building.
  • Automatic switches can turn off electricity and gas pipes to help reduce the chance of fires.
  • Earthquake drills can help to reduce the damage done.
    • E.g. Japan has an earthquake day on the 1st September.
Protection in low income countries

Protection in low income countries

  • Low-income countries often use cheaper ways to protect buildings.
  • Lighter roof materials (sheet metal instead of concrete) and bamboo rods in walls (instead of steel) can help to hold walls together and reduce the damage caused if they collapse.
Planning

Planning

  • High-income countries often have warning systems and evacuation plans in place.
  • Japan had a brand new tsunami/earthquake warning system in place for the 2011 earthquake. The Japanese authorities have a system where they take control of all media and give people instructions to evacuate.
  • Paramedics, police, and firefighters all receive training for dealing with earthquakes or volcanic eruptions.
  • Governments can stockpile supplies like tents, food, and water.
  • Teaching people about evacuation plans can also help in a disaster. New Zealand has a 'Turtle Safe' drill to teach preschool children.
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Geography Skills

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Geology of the UK

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Geography of the World

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Life in an Emerging Country

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Analysis of Africa

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Analysis of India

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Analysis of the Middle East

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Analysis of Bangladesh

21

Analysis of Russia

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