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Tectonic Hazards

Impacts of earthquakes in contrasting contexts

  • 2 things to know
  • Component 3 Section A

Overview

The same physical event in different places: primary and secondary effects, and why building standards, warning and emergency capacity matter more to the death toll than magnitude does.

What you need to know

Answer each one before you reveal it.

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Numbers

Describe the Haiti earthquake of January 2010.

Numbers

Why are the death toll figures for Haiti disputed?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    Describe the Haiti earthquake of January 2010.

    Model answer

    A moment magnitude 7.0 earthquake struck about 25 km west of Port-au-Prince on 12 January 2010. The focus lay only around 13 km deep on the Enriquillo-Plantain Garden fault.

  2. 2

    Why are the death toll figures for Haiti disputed?

    Model answer

    Haitian government figures issued in 2011 gave more than 300,000 deaths. Independent studies published soon afterwards estimated between about 46,000 and 160,000, and the true figure remains uncertain.

  3. 3

    Why was the damage in Haiti so severe?

    Model answer

    Port-au-Prince had grown rapidly with unreinforced concrete buildings and no enforced building code. Haiti was the poorest country in the Americas and had almost no search-and-rescue capacity.

  4. 4

    Give the wider impacts of the Haiti earthquake.

    Model answer

    Around 1.5 million people were left homeless and many lived in camps for years. A cholera outbreak that began in October 2010 killed a further 9,000 or more.

  5. 5

    Describe the Chile earthquake of February 2010.

    Model answer

    A moment magnitude 8.8 earthquake struck off the Maule coast of Chile on 27 February 2010. The rupture released roughly 500 times the energy of the Haiti earthquake.

  6. 6

    How many people died in the Chile earthquake of 2010?

    Model answer

    Official Chilean figures record around 525 deaths, including those caused by the tsunami that followed. Most buildings in Santiago and Concepción remained standing.

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