Earthquakes in New Zealand

1. There was a 5.6 magnitude earthquake 14 hours ago (May 4th, 2015.) The one I'm doing this assignment on is a magnitude 6.6 earthquake that happened August 16th, 2013 in Lake Grassmere.
2. The focus was 41.73°S, 174.15°E and it was 8 km in depth, so it was a shallow earthquake.
3. There was also a earthquake a month earlier which was a magnitude 6.5 Cook Strait earthquake on 21st July. Land displacement of GPS stations in both the M6.5 Cook Strait and M6.6 Lake Grassmere. The greatest displacement was seen at Cape Campbell during the M6.6 earthquake, land here moved 18cm to the west.
4. It was a magnitude 6.6 on the Richter scale.
5. a) There wasn't much affect except buildings and roads were damaged making it harder for humans to navigate and live everyday lives.
b) Roads were split in half and liquefaction and sand boils appeared in many areas.
c) There wasn't a huge cost to repair things, but some buildings and roads had to be fixed.
d) Many buildings were damaged or re-damaged after being damaged in the July earthquake and roads had cracked and split, but there were no major bridge and overpass damage recorded.

This is the recorded seismic activity of the earthquake.