Saturday, September 25, 2010

Aftershock count....



....is one thousand sixty. In fact, we just had a 3.8, 4.1 and 4.0 in a span of 15 minutes. Ah for f%$#'s sake. ENOUGH!!!!!!!


You can read an interesting article about our fair city's plight here and here (click on Earthquake Analysis by John Holdaway) who highlights these interesting bits and pieces:
  • The longest period without a quake was 12 hours and 24 minutes on Tuesday evening (Sept 21st).
  • Cantabrians have been shaken every 29 minutes and 10 seconds, on average, since the September 4 quake.
  • Since the initial 7.1 quake over two weeks ago, we have never gone more than 80 hours without an aftershock of magnitude 4.3 or above. So it can still be predicted with a reasonable degree of confidence that we should continue to get at least one large (magnitude 4.3+) aftershock every 2-3 days for the next 1-2 weeks. It’s not unlikely that one or two of those large aftershocks may be of magnitude 5.0-5.5. Magnitude 6+ quakes are much less likely to occur, and are becoming progressively less likely as time goes on.
  • It appears that there is a discrepancy in the amount of energy released since the main Canterbury quake in comparison to other recent quakes of similar magnitude around the world (ie. Haiti, Baja), which suggests the possibility that several strong aftershocks may still be yet to come.
Why do I read this stuff?

Oy!

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