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Government or official record

M 6.2 Christchurch, Tuesday 22 February 2011

GeoNet

Where this source supports the record

Each entry separates the article’s editorial relevance note from its exact, section-level claims. A bibliography link without a direct claim is labeled plainly.

  1. Natural disasters · 22 February 2011

    Christchurch Earthquake

    Former Canterbury Television building site · New Zealand

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    Why editors use it here

    Official earthquake record covering location, depth, casualties, aftershock science, landslides, liquefaction, and extreme ground motion.

    1. Quick read

      At 12:51 p.m.

      Reviewed 4 August 2026
    2. Trigger and conditions

      A shallow fault rupture occurred within about 10 kilometers of the city.

      Reviewed 4 August 2026
    3. Uncertainty

      GeoNet headlines the event as magnitude 6.2 while some technical text and catalogs use local magnitude 6.3; the difference reflects scale and revision, not two earthquakes.

      Reviewed 4 August 2026
    4. Why it matters

      Christchurch shows why earthquake magnitude alone is a poor guide to urban harm.

      Reviewed 4 August 2026