Canterbury Earthquakes part II

September 7, 2010
By

(This article was first published on The Praise of Insects, and kindly contributed to R-bloggers)

Since posting last night, there’s been several more aftershocks, including several big ones. The total now stands (at 7:00pm) at 304 aftershocks, 70 greater than 4 on the Richter scale, 29 greater than 4.5, and 10 greater than 5. A couple of the fives happened last night, waking us up, and causing more damage to several buildings around town.

This evening’s installment is a map of the region of Canterbury where the earthquakes have been centred, showing the epicentre of all aftershocks and their magnitudes. It appears that while smaller tremours have been centred fairly widely, the larger magnitude earthquakes have been centred more around the epicentre of the initial 7.1 quake. As before, I’ve made the the data and R code available.

The region around the epicentre of the initial quake has been surveyed by GNS scientists. They’ve got some pretty awesome aerial photos showing the location of the fault on their webpage detailing their work.

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