Here's an interesting map showing this week's 6.3 quake and the September 7.1 magnitude quake. This most recent quake was a lot closer to Christchurch (10km v. 30km) and shallower (5km v. 33km).


http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=10708171