Monthly by Depth

On 10/02/2013 I noticed a sharp increase in deep quakes off the West Coast of both the North and South Islands. This calls for further investigation, to see if this has happened before, or is a new phenomenon with major changes to the Plate Boundary in process or perhaps related to events in other parts of the Pacific (Santa Cruz at the time of writing).
In the maps below the colours of the icons are different to the other maps on this blog, the depth key below should be referred to.
depth key

February 2013

summary

0-35 = 270, 35-70 = 11, 70-150 = 103
150-300 = 167, 300-500 = 41, 500-800 = 5

January 2013

summary

0-35 = 761, 35-70 = 199, 70-150 = 201
150-300 = 20, 300-500 = 0, 500-800 = 0

December 2012

summary

0-35 = 815, 35-70 = 196, 70-150 = 218
150-300 = 273, 300-500 = 17, 500-800 = 1

November 2012

summary

0-35 = 767, 35-70 = 181, 70-150 = 192
150-300 = 209, 300-500 = 28, 500-800 = 3

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