14/06/2011  

After shock, or quake

Media reports of the latest quake in Christchurch refer to it being an aftershock. How can this be? I would have throught the magnitude alone made it an earthquake, not an aftershock. As it happened so long after the original quake, doesn’t this rate on it own?

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About Greg Smith, personal trainer

Part-time health and wellness advisor for the over-40s. I've won world and Australian titles in surf swimming and iron man. I am a registered level 2 personal trainer with Fitness Australia. On a fulltime basis I work in PR. I have a PhD in communications.

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