You may have seen that there was an earthquake of magnitude 6.3 that struck Christchurch, New Zealand at 1251 local time on Tuesday. Christchurch experienced an earthquake of magnitude 7.1 in September 2010.
For more information you may be interested in the following links:
The USGS and BGS have information pages on the 22 February earthquake. The New Zealand Herald reports that ice was shaken loose from the Tasman Glacier at Aoraki Mt Cook National Park [link] and has more reports and images from Christchurch itself on its website.
In New Zealand itself, <GNS Science is the relevant government agency (the Institute of Geological and Nuclear Sciences Limited). They have pages on the 4 September 2010 Earthquake and Earthquake Monitoring in New Zealand.
Earthquakes and related topics at the EGU General Assembly 2011 fall under the Seismology Division , the Earthquakes and Tectonics section of the Tectonics and Structural Geology Division and Earthquake Hazards section of the Natural Hazards Division.